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Benefits of reducing urban speed limits to 30km/h, June 2025

ETSC PIN Conference 2025: A new road safety culture in Greece with the New Road Traffic Code: City-wide 30km/h speed limit in all urban streets of one or two directions with one lane per direction - the second EU country after Spain (from 1 January 2026) Accompanied by: rationalising and simplifying penalties, linking them to the seriousness & magnitude of offences punishing drivers instead of vehicles, especially recidivists introducing two-wheeler filtering & advance stopping zones deploying cameras for key violations (speeding, helmet, seatbelt, mobile use) implementing digital management of fines.
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Steady pace wins the race, June 2025

4NewMobility Leadership Talk Podcast: NTUA Professor George Yannis provided a technical conversation, hosted by Astrid Rohles, about 30 km/h speed zones which turned into something much bigger: a vision for healthier, safer and more human cities. He emphasized that speeding remains the norm in urban mobility, endangering lives, discouraging active travel and fueling pollution. From empirical results across 17 European cities to his personal 30 Marathons in 30 months campaign, Prof. Yannis made a passionate and data-driven case for a European-wide roll-out of this low-cost, high-impact measure. 👉 The solution? A coordinated European approach: Make 30 km/h the default in urban areas Support cities with infrastructure redesign Pair soft nudges with smart enforcement Communicate, measure and repeat
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A new road safety culture in Greece with the New Road Traffic Code, June 2025

New Road Traffic Code: The new Greek Road Traffic Code introduces city-wide 30 km/h speed limit in all urban streets of one or two directions with a single lane per direction, making Greece the second EU country after Spain to implement such a measure. A bold move of the Greek Government towards a new road safety culture, with a brand-new Road Traffic Code link with the active contribution of National Technical University of Athens: rationalising and simplifying penalties, linking them to offences’ seriousness & magnitude, punishing drivers instead of vehicles, especially recidivists, introducing two-wheelers filtering & advance stopping zones, expanding calm driving with city-wide 30km/h speed limits, and getting ready for wide deployment of cameras and fines digital management.
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A new road safety culture in Greece with the New Road Traffic Code, June 2025

Greek Parliament: The New Road Traffic Code is moving in the right direction, correcting the distortions of the existing Road Traffic Code, by rationalising and simplifying penalties and linking them to the seriousness and magnitude of the offences. It also quite rightly refers to punishing drivers rather than vehicles and to further punishing recidivists. In addition, it introduces a number of correct and necessary traffic management provisions with emphasis on motorcycles (filtering & special waiting zone at traffic lights) and the 30km/h speed limit in cities.of city-wide 30km/h speed limit is the since-long waited, single road safety measure with such a significant improvement at such a low cost. Such a high societal impact for such a small change in our habits.
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Effectiveness of city-wide 30 km/h speed limits, May 2025

Artificial Intelligence for Road Safety and Mobility Workshop: The reduction of speed limits in cities (30km/h) leads to a significant socio-economic impact in road crashes, energy and emissions. Public acceptance of speed limits reduction tends to improve over time, especially by pedestrians, cyclists and Public Transport passengers. However, inertia and reactions from car drivers need to be addressed. The implementation of city-wide 30km/h speed limit is the since-long waited, single road safety measure with such a significant improvement at such a low cost. Such a high societal impact for such a small change in our habits.
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Implementing city-wide 30 km/h speed limit, May 2025

ITF-Eurostat Workshop: Assessing the effectiveness of city-wide 30 km/h speed limits requires a comprehensive set of data. Key indicators include speed and traffic data before and after implementation, traffic volume and pedestrian or cyclist counts. Crash data are also essential, especially when analyzed by severity and road user type. Environmental impacts are measured via air pollution and noise levels. Street design changes are analyzed with GIS or imagery. Health outcomes such as reduced injury rates, improved air quality, and physical activity are also considered. Eight key performance indicators (KPIs) are central: speeding violations, average speed, traffic volume, harsh braking/acceleration, helmet use, crash severity, air quality and driver feedback. Data is collected through sensors, cameras, police reports, environmental monitors and public surveys, with varying frequency. Analytical methods include before-and-after comparisons, both with and without control areas, using statistical approaches like Poisson models or Bayesian analysis.
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Can Athens solve the traffic problem? May 2025

Lifo Podcast: City-wide 30km/h speed limit is not only cost-effective but also crucial for changing driver behaviour and enhancing urban mobility. Actually, it is a myth that lower speed limits significantly delay travel times, as there are negligible differences and even long-term traffic improvement in cities that adopted the measure. There is a need for a cultural shift toward sustainable transport and reduced car dominance, advocating for reclaiming public space, enhancing public transport and implementing smart parking policies. 30km/h speed limits can make Greek cities safer, more efficient and aligned with successful European examples.
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Self-reported speeding and the support for 30km/h zones, May 2025

WHO-ERSA webinar: Self-reported speeding behaviour of car drivers ranged from 27.8% (America8) to 52.8% (Europe22). More speeding is reported in Europe22 for the different road types. Men are more likely to report speeding for all road types and conditions. In Europe22 younger age groups were most likely to report speeding on all road types (in America8 this was only the case for “drive too fast for the road conditions at the time”, on other road types a reversed age effect was observed). Additional associated factors for reporting speeding behaviour found to be: higher personal acceptability, stronger behaviour beliefs (“I have to drive fast…“) and lower support for policy measures (regarding speeding).
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City-wide 30km/h Speed Limit at the New Road Code of Greece & the NTUA Marathons Campaign, April 2025

ETSC Main Council Meeting: Speeding, as the key factor for road crashes, must be recognized as a major societal health issue for which action is needed at EU level, as is the case with smoking and alcohol consumption. Consequently, the European Union should set the maximum speed limits in all European Roads, and national and local Authorities can only make the necessary adjustments of lower speed limits after specific studies. Given its unprecedented benefits, the city-wide 30km/h speed limits should become a European rule (off course with the exception of selected main axes e.g. roads with a median), with the EU assuming thus its fundamental role of protecting its citizens' lives.
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City-wide 30km/h speed limits - Challenges and perspectives, March 2025

EURSE Workshop of Road Safety: The New Greek Road Code proposes 30km/h speed limit in all urban areas in Greece. It is under final checking by the Government and it is expected to be in force from 1 November 2025. It is accompanied by: - a more rational fines system (linked to the severity and the size of the infraction) - a large number of speeding monitoring cameras - a new digital system for automated processing of fines
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Review of City-Wide 30 km/h Speed Limit Benefits in Europe, March 2025

Eurocities: The reduction of speed limits in cities (30km/h) leads to a significant socio-economic impact in road crashes, energy and emissions. Public acceptance of speed limits reduction tends to improve over time, especially by pedestrians, cyclists and Public Transport passengers. However, inertia and reactions from car drivers need to be addressed. The implementation of city-wide 30km/h speed limit is the since-long waited, single road safety measure with such a significant improvement at such a low cost. Such a high societal impact for such a small change in our habits.
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Speed Kills: Is Our 'Freedom to Drive' a Danger to Others?, February 2025

Y-Mobility: We need to talk about your "freedom to drive" and why it's killing people. 🚨 The Y-Mobility latest podcast episode tackles this head-on with three global experts willing to say what others won't. George Yannis Nick Reed David Fidalgo Timothy Papandreou Quick reality check: - More road deaths than all wars combined - Your SUV? It's part of the problem - That 30 km/h limit you hate? It's saving lives - Your "excellent driving skills"? That's part of the problem too Controversial? Good. That's the point. 🤔 Genuine question: When did we decide that driving fast was a right rather than a privilege?
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Analysis of the benefits of 30km/h speed limit in cities, January 2025

The 'City 30' and the New Road Traffic Code Workshop: Speed limits reduction gaining rapid acceptance across Europe and more and more European cities adopting lower speed limits. The reduction of speed limits in cities (30km/h) leads to a significant reduction not only in road crashes and casualties but also in fuel/energy consumption and air pollution without a significant decrease in travel times. Public acceptance of speed limits reduction tends to improve over time, especially by pedestrians, cyclists and Public Transport passengers.
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Review of the effectiveness of city-wide 30 km/h speed limit, January 2025

TRB2025 Standing Committee on Safety Performance and Analysis: Speed limits reduction gaining rapid acceptance across Europe and more and more European cities adopting lower speed limits. In order to make scientists’ voices louder, I engaged in a global campaign of running 30 Marathons in 30 months in order to actively promote the adoption of city-wide 30 km/h speed limit in as many cities as possible worldwide. This campaign was concluded in November 2024 in Athens (all Marathons in under 4 hours) with a particularly significant global impact.
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Review of City-Wide 30 km/h Speed Limit Benefits in Europe, January 2025

TRB2025 Analysis of International Road Safety Data: Lessons for Global Application: City-wide 30km/h speed limits are very appropriate for European cities, as most of them are densely populated areas, with significant traffic of pedestrians, cyclists, escooters and motorcyclists in need of protection from cars' high speeds. Outside Europe, 30km/h speed limits should be beneficial for the densely populated areas with high presence of Vulnerable Road Users, but not easily applicable for not densely populated areas with low presence of pedestrians, cyclists, e-scooters and motorcyclists.
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George Υannis – 30 Marathons in 30 Months to Actively Promote the Adoption of 30 km/h Speed Limit in Cities, December 2024

IRF Newsletter: This unique challenge of 30 Marathons, has raised mass awareness at both society and Authorities for a better quality of life in cities with calm driving for safer, healthy and green travelling for all. The global impact of this campaign is impressive with over 400,000 views and 100,000 visitors per year to the campaign’s websites and social media. In addition, George Yannis has contributed with dozens of interviews on TV, radio and online media and dozens of articles in newspapers and publications in scientific journals and conferences, supported by all major International Road Safety and mobility Organizations. George Yannis insists on a steady pace both when running Marathons and when advocating for safe traffic in cities with a 30 km/h speed limit. He will continue to actively support life-saving options that enhance sustainable urban development and safe travelling everywhere and for all. With the active support of: NTUA, ETSC, ECTRI, POLIS, UITP, ERF, IRF, FERSI, FEHRL, ECF, WALK21 and HITE.
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30km/h Speed Limits: Utopia οr Necessity?, December 2024

Athens Voice Podcast "Travelling Differently ": The promotion of alternative modes of transport, such as Public Transport, cycling and walking, can improve quality of life, contribute to sustainability and make cities more citizen- and environmentally friendly. It is impossible to fit everyone into the city using their cars, especially during rush hours. For long distances, public transport should be used, while for short distances, cycling and walking can suffice. In the first case, bus lanes and additional metro lines (which take time) are needed, while in the second case, city centers and all municipalities should make space for cycling and walking to bring back life to the city. The best road safety measure is to use buses, which are the safest form of public transport, in addition to being much more environmentally friendly. Indeed, in the cities where 30 km/h speed limits have been applied, there has been a medium-term increase in public transport use, as well as an increase in the number of pedestrians and cyclists, who are no longer afraid to take to the streets. Thus, 30 km/h serves as a catalyst not only for road safety but also for changing our travel behaviour.
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George Υannis - 30 Marathons in 30 months to actively promote the adoption of 30 km/h speed limit in cities, December 2024

European Road Safety Charter: George Yannis, Professor and Director of the Department of Transportation Planning Engineering of the School of Civil Engineering at the National Technical University of Athens (NTUA), has successfully completed on Sunday 10 November 2024 in Athens his campaign to run 30 Marathons in 30 months in order to promote the 30km/h speed limit in cities worldwide. He has finished all Marathons in under 4 hours. City-wide 30 km/h speed limits is the since-long waited single road safety measure with such a significant driving culture change at such a low cost. Evaluation results (Implementation results and Simulation studies) from 40 different cities across Europe (including Paris, London, Brussels, and Helsinki) demonstrated that 30 km/h speed limits have led to significant reductions: 37% of road crash fatalities, 18% in emissions, 2.5dB in noise pollution and 7% in fuel consumption (on average). Such a high societal impact for such a small change in our habits.
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George Υannis - 30 Marathons in 30 months to actively promote the adoption of 30 km/h speed limit in cities, December 2024

International Association of Public Transport (UITP): 🎉 Congratulations to Professor George Yannis on completing his incredible challenge of 30 marathons in 30 months, promoting the adoption of 30km/h speed limits in cities worldwide! 🌍🏃‍♂️ George Yannis insists on a steady pace both when running Marathons and when advocating for safe traffic in cities with a 30 km/h speed limit. He will continue to actively support life-saving options that enhance sustainable urban development and safe travelling everywhere and for all. This campaign has highlighted the vital role of lower speeds in making our cities safer, healthier, and greener for all. 💡 Last year, we shared his story when he embarked on this journey. Read it here: https://lnkd.in/ed4D3UBk.
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George Υannis - 30 Marathons in 30 months to actively promote the adoption of 30 km/h speed limit in cities, December 2024

Runbeat: This unique challenge of 30 Marathons, has raised mass awareness at both society and Authorities for a better quality of life in cities with calm driving for safer, healthy and green travelling for all. The global impact of this campaign is impressive with over 400,000 views and 100,000 visitors per year to the campaign's websites and social media. In addition, George Yannis has contributed with dozens of interviews on TV, radio and online media and dozens of articles in newspapers and publications in scientific journals and conferences, supported by all major International Road Safety and mobility Organizations. George Yannis insists on a steady pace both when running Marathons and when advocating for safe traffic in cities with a 30 km/h speed limit. He will continue to actively support life-saving options that enhance sustainable urban development and safe travelling everywhere and for all. With the active support of: NTUA, ETSC, ECTRI, POLIS, UITP, ERF, IRF, FERSI, FEHRL, ECF, WALK21 and HITE.
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George Υannis - 30 Marathons in 30 months to actively promote the adoption of 30 km/h speed limit in cities, December 2024

IRF: George Yannis, Professor and Director of the Department of Transportation Planning Engineering of the School of Civil Engineering at the National Technical University of Athens (NTUA), has successfully completed on Sunday 10 November 2024 in Athens his campaign to run 30 Marathons in 30 months in order to promote the 30km/h speed limit in cities worldwide. He has finished all Marathons in under 4 hours. City-wide 30 km/h speed limits is the since-long waited single road safety measure with such a significant driving culture change at such a low cost. Evaluation results (Implementation results and Simulation studies) from 40 different cities across Europe (including Paris, London, Brussels, and Helsinki) demonstrated that 30 km/h speed limits have led to significant reductions: 37% of road crash fatalities, 18% in emissions, 2.5dB in noise pollution and 7% in fuel consumption (on average). Such a high societal impact for such a small change in our habits.
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30 Marathons - 30 Months - 30km/h speed limits - Report of an Amazing Journey, December 2024

NTUA Civil: 🌍 The School of Civil Engineering, NTUA joins forces with Professor George Yannis in this unique campaign to promote the 30km/h speed limit for safer, healthier and greener cities. The campaign is supported by National Technical University of Athens, European Transport Safety Council (ETSC), ECTRI, POLIS Network, UITP, ERF - European Union Road Federation, International Road Federation (IRF Global), FERSI Road Safety Research, FEHRL, European Cyclists'​ Federation and Walk21 Foundation. We are grateful to George Yannis for his scientific contributions in hashtag#roadsafety all these years and his active involvement in tackling grand societal challenges. 🏃‍♂️‍➡️ More information in: https://lnkd.in/eg75ngGG
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George Yannis – 30 Marathons in 30 months for 30 km/h speed limit in cities, December 2024

In NRSO newsletter: NTUA Professor George Yannis has successfully completed his challenge to run 30 Marathons in 30 months in order to actively promote the 30km/h speed limit in cities. He has finished all marathons in under 4 hours. This campaign has a particularly significant social impact, with over 400,000 views and 100,000 visitors per year at the website and social media. It also received wide publicity with dozens of interviews on TV, radio and online media and dozens of articles in newspapers and publications in scientific journals and conferences, with the active support of NTUA and all major International Road Safety and mobility Organizations (ETSC, ECTRI, UITP, POLIS, ERF, IRF, FERSI, FEHRL, ECF, WALK21 and HITE). George Yannis will continue with the same passion supporting with scientific evidence and promoting slower speeds and safer mobility everywhere and for all.
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George Yannis – 30 Marathons in 30 months for 30 km/h speed limit in cities, December 2024

Running News: This unique challenge of 30 Marathons, has raised mass awareness at both society and Authorities for a better quality of life in cities with calm driving for safer, healthy and green travelling for all. The global impact of this campaign is impressive with over 400,000 views and 100,000 visitors per year to the campaign's websites and social media. In addition, George Yannis has contributed with dozens of interviews on TV, radio and online media and dozens of articles in newspapers and publications in scientific journals and conferences, supported by all major International Road Safety and mobility Organizations. George Yannis insists on a steady pace both when running Marathons and when advocating for safe traffic in cities with a 30 km/h speed limit. He will continue to actively support life-saving options that enhance sustainable urban development and safe travelling everywhere and for all.
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George Yannis – 30 Marathons in 30 months for 30 km/h speed limit in cities, November 2024

European Transport Safety Council (ETSC): "What a bliss to accomplish my 30 Marathons in 30 months challenge (all in less than 4 hours) at my hometown Athens, with very strong emotions at the start in Marathon city, along the 42 km route full of supporters and at the magnificent finish line at the Panathinaikon Marble Stadium surrounded by my great fellow runners. Highly grateful to all who believed and supported the campaign for safer cities with 30km/h speed limits. With steady pace we win the race both in running Marathons and in promoting sustainable urban mobility everywhere and for all. And the beautiful journey continues". Professor George Yannis is so convinced of the power of 30 km/h urban speed limits to save lives - he ran 30 marathons in 30 months to spread the word. We hear he is working on running the next 30 marathons at 30 km/h too. 🤪 Congratulations George for this fantastic achievement. 30 km/h is the right speed for the places where motor vehicles mix with pedestrians, cyclists...and marathon runners in training!
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Review of impacts of city-wide 30km/h speed limit, November 2024

POLIS 2024 Conference: The discussion and introduction of city-wide 30 km/h speed limit faces strong reactions and rigid inertia, whereas supporters' voices are often weak and inefficient resulting in hesitant politicians and Authorities. After more than 30 years of dedication to road safety science and several Marathon races, Prof. George Yannis decided to step beyond the traditional scientific pleas and combine both passions for a cause: to run 30 Marathons in 30 months to actively promote the adoption of city-wide 30km/h speed limit in as many cities as possible worldwide. Setting a speed limit of 30 km/h where people and traffic mix, make streets safer, healthier, greener and more liveable. City-wide 30km/h speed limits is the road safety catalyser. The since-long waited single road safety measure with such a significant improvement at such a low cost.
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30 Marathons - 30 Months - 30km/h speed limits - Report of an Amazing Journey, November 2024

Efthita: 1. Easier than expected: That was my biggest surprise. Completing the 30 Marathons, was much easier than initially thought as my body was making astonishing adaptations after each Marathon throughout the 30 months. In fact, the best training for a Marathon is to run Marathons 😊. The immense joy at every mile, among happy runners, enthusiastic fans and unique moments of ecstasy and excitement at every start, every finish and every beautiful place made the challenge much easier. 2. Persistence and adaptation: Being systematic in planning training and races and flexibly adapting according to problems were the keys to success. The biggest challenge was to preparing, organizing and running a Marathon every few weeks together with an overloaded work and travel schedule, full of restrictions, surprises and limited time. It was a wonderful race against time every minute of these 30 months.
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George Υannis – 30 Marathons in 30 months to actively promote the adoption of 30 km/h speed limit in cities, November 2024

International Road Safety Centre: City-wide 30 km/h speed limits is the since-long waited single road safety measure with such a significant driving culture change at such a low cost. Evaluation results (Implementation results and Simulation studies) from 40 different cities across Europe (including Paris, London, Brussels, and Helsinki) demonstrated that 30 km/h speed limits have led to significant reductions: 37% of road crash fatalities, 18% in emissions, 2.5dB in noise pollution and 7% in fuel consumption (on average). Such a high societal impact for such a small change in our habits. George Yannis insists on a steady pace both when running Marathons and when advocating for safe traffic in cities with a 30 km/h speed limit. He will continue to actively support life-saving options that enhance sustainable urban development and safe travelling everywhere and for all.
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30 Marathons in 30 months for 30km/h, November 2024

Runner Magazine: 1. Finishing all Marathons in less than 4 hours: I successfully completed all 30 Marathons in 30 months in less than 4 hours (ranging from 3:31 to 3:59). 3:55 was definitively my preferred time 😊. 2. One Marathon every 2-3 weeks: As near-by Marathons are not available in the winter and in the summer, I run 5 Marathons 2 weeks after the previous one and 12 Marathons 3 weeks after the previous one 😮 (often 6 Marathons in 3 months), requiring high-end optimisation of recovery, peaking and tapering. 3. 68 Marathons in total: This last Marathon was my 23rd in my home-city Athens and my 68th Marathon in total 😮. 4. Run twice around the earth: I started running long distance just before the age of 16 and since then I keep an excel file logging my kilometers every day 😮 and I am expecting to reach 80.000km by the end of this year, which is twice the perimeter of the earth 😊.
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George Υannis – 30 Marathons in 30 months to actively promote the adoption of 30 km/h speed limit in cities, November 2024

Department of Transportation Planning and Engineering, NTUA: This unique challenge of 30 Marathons, has raised mass awareness at both society and Authorities for a better quality of life in cities with calm driving for safer, healthy and green travelling for all. The global impact of this campaign is impressive with over 400,000 views and 100,000 visitors per year to the campaign’s websites and social media. In addition, George Yannis has contributed with dozens of interviews on TV, radio and online media and dozens of articles in newspapers and publications in scientific journals and conferences, supported by all major International Road Safety and mobility Organizations.
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George Yannis – 30 Marathons in 30 months for 30 km/h speed limit in cities, November 2024

NTUA Road Safety Observatory (NRSO): NTUA Professor George Yannis has successfully completed his challenge to run 30 Marathons in 30 months in order to actively promote the 30km/h speed limit in cities. He has finished all marathons in under 4 hours. This campaign received wide publicity with dozens of interviews on TV, radio and online media and dozens of articles in newspapers and publications in scientific journals and conferences. With the active support of NTUA and all major International Road Safety and mobility Organizations (ETSC, ECTRI, UITP, POLIS, ERF, IRF, FERSI, FEHRL, ECF, WALK21 and HITE).
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Campaign Social Impact, November 2024

Social Impact: The social impact of the campaign is impressive with over 400,000 views and 100,000 visitors per year to the websites and social media. In addition, NTUA Professor George Yannis has contributed with dozens of interviews on TV, radio and electronic media and dozens of publications in newspapers and scientific journals, conferences and webinars, supported by all the major international road safety and mobility Organisations. George Yannis insists on a steady pace both when he runs a Marathon and when he supports safe traffic in cities with a speed limit of 30 km/h and will continue to actively support options that save lives and enhance sustainable urban mobility and safe travel everywhere and for all.
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We celebrate an important milestone for safer cities, November 2024

ECTRI: Speeding remains a primary cause of road crashes and pedestrian casualties in cities worldwide. Through this initiative, Professor Yannis has extended his advocacy for road safety beyond academic circles, running 30 marathons to promote the adoption of 30 km/h speed limits in cities globally. This speed limit is crucial for creating safer, healthier, and more sustainable urban environments. His final marathon in Athens, concluding at the historic Panathinaikon Marble Stadium, symbolises the steady progress towards sustainable urban mobility. ECTRI was happy to support Professor Yannis' vision and achievement! Through this type of efforts, we can work towards improving safety in our cities. Let's keep the momentum going.
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Effectiveness of 30 km/h speed limit – A literature review, November 2024

Journal of Safety Research: a comprehensive literature review was conducted, evaluating the impact of 30 km/h speed limits on safety, emissions, energy consumption, traffic flow, livability, and health. It was revealed that city-wide 30 km/h speed limit can save (on average) over 40% of lives, 30% of crashes, 20% of emissions and 3.7 dB of noise, while no impact in travel times was observed. Results demonstrated significant subsequent increase of active travelling (pedestrians, cyclists and e-scooters) and Public Transport passengers, as mobility conditions become more user friendly to the vulnerable road users.
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Micromobility Safety, November 2024

Cycling, Micromobility and Road Safety Webinar: Speeding has been found as a risk factor for e-scooter injuries (~30%). Authorities should default to 30 km/h (or 20 km/h) speed limits for car and truck traffic in areas with high micromobility traffic. In areas where micromobility riders legally can or must share pedestrian spaces, authorities should default to establishing a safe (~6-10 km/h) speed limit for micromobility modes to enhance pedestrian safety. The use of appropriate helmets should be also promoted.
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Review of 30 km/h speed limit benefits in Europe, October 2024

POLIS Working Group for Safety & Security: Particular emphasis was given on the effectiveness of lower speed limits and Low-Traffic Neighborhoods in enhancing road safety. The reduction of speed limits in cities (30km/h) leads to a significant reduction in road crashes and congestion, fuel/energy consumption and air pollution (without a significant decrease in travel times). Public acceptance of speed limits reduction tends to improve over time, especially by pedestrians, cyclists and Public Transport passengers.
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Assessing the effectiveness of 30km/h speed limit in cities, October 2024

IRF World Congress: Speeding is the number one cause of road crashes, especially in cities where pedestrians, cyclists and motorcyclists are highly exposed. This paper endeavours to assess the effectiveness of city-wide 30km/h speed limit. Scientific evidence demonstrated that more than 40% lives saved with the introduction of 30km/h speed limits in urban areas; in parallel to significant positive environmental, energy and health impacts with less fuel consumption and more walking and cycling. Encouraging citizens to embrace walking, cycling and utilizing public transit services can contribute to a safer and environmentally sustainable urban environment.
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Review of City-Wide 30 km/h Speed Limit Benefits in Europe, October 2024

Webinar on traffic calming: The reduction of speed limits in cities (30km/h) leads to a significant socio-economic impact in road crashes, energy and emissions. Public acceptance of speed limits reduction tends to improve over time, especially by pedestrians, cyclists and Public Transport passengers. However, inertia and reactions from car drivers need to be addressed. The implementation of city-wide 30km/h speed limit is the since-long waited, single road safety measure with such a significant improvement at such a low cost. Such a high societal impact for such a small change in our habits.
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Cost Benefit Analysis of Reducing speed limits in Athens to 30 Km/h, October 2024

Case Studies on Transport Policy: Significant public support for reducing the speed limit from 50 km/h to 30 km/h throughout urban networks, reflecting a societal shift toward prioritizing road safety. Multifaceted societal impacts of lower speed limits, including reductions in collisions, casualties, and fatalities, supported by evidence from both this study and existing literature. Robust socio-economic analysis demonstrating the economic viability of implementing a 30 km/h speed limit in the urban center of Athens, Greece, with estimated net economic benefits exceeding €35 million by 2030.
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George Yannis was awarded an Honorary Distinction for his campaign promoting 30km/h speed limits, September 2024

Environment Awards: NTUA Professor George Yannis has been awarded an Honorary Distinction during the Environmental Awards 2024, organised by Boussias events. Prof. George Yannis was awarded for his campaign promoting city-wide 30km/h speed limits in as many cities as possible worldwide, as a key policy for safer, healthier and greener cities, through his challenge of 30 Marathons in 30 months.
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Review of City-Wide 30 km/h Speed Limit Benefits in Europe, September 2024

National Safer Roads Partnerships Conference: Speeding is the number one cause of road crashes worldwide, especially in cities where pedestrians, cyclists and motorcyclists are highly exposed and vulnerable in case of a collision. Road environments designed to reduce vehicle speeds to 30 km/h or lower. This is achieved through 30 km/h speed limits, supported by speed enforcement, traffic calming measures, and pedestrian facilities to ensure safe mobility everywhere and for all.
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Impact of a 30 km/h City-Wide Speed Limit, September 2024

TRB ACS10 Committee: Speed limits reduction gaining rapid acceptance across Europe and more and more European cities adopting lower speed limits. Public acceptance of speed limits reduction tends to improve over time, especially by pedestrians, cyclists and Public Transport passengers. The speed limit of 30 km/h across the city is the since-long waited single road safety measure with such a significant improvement at such a low cost. More than a simple new traffic rule: a catalyser for a new road safety culture.
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Review of City-Wide 30 km/h Speed Limit Benefits in Europe, September 2024

City Flows: Speed limits reduction gaining rapid acceptance across Europe and more and more European cities adopting lower speed limits. Public acceptance of speed limits reduction tends to improve over time, especially by pedestrians, cyclists and Public Transport passengers. The speed limit of 30 km/h across the city is the since-long waited single road safety measure with such a significant improvement at such a low cost. More than a simple new traffic rule: a catalyser for a new road safety culture.
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Review of City-Wide 30 km/h Speed Limit Benefits in Europe, September 2024

ETSC Pin Talk Ljubljana: The speed limit brings a higher quality of life in an increasing number of European cities, which has a significant socio-economic impact It means a significant reduction in fuel consumption and air pollution, and it helps to reduce the number of traffic accidents and congestion. The public acceptance of speed limits is improving over time, especially by pedestrians, cyclists and users of public passenger transport, and possible resistance by drivers must be addressed.
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Exploring the benefits from 30 km/h speed limit reduction to enhance urban sustainability, September 2024

30th ITS World Congress: Speeding is the number one cause of road crashes worldwide, especially in cities where pedestrians, cyclists and motorcyclists are highly exposed and vulnerable in case of a collision. Road environments designed to reduce vehicle speeds to 30 km/h or lower. This is achieved through 30 km/h speed limits, supported by speed enforcement, traffic calming measures, and pedestrian facilities to ensure safe mobility everywhere and for all.
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Review of City-Wide 30 km/h Speed Limit Benefits in Europe, September 2024

ETSC Pin Talk Latvia: The reduction of speed limits in cities (30km/h) leads to a significant socio-economic impact in road crashes, energy and emissions. Public acceptance of speed limits reduction tends to improve over time, especially by pedestrians, cyclists and Public Transport passengers. However, inertia and reactions from car drivers need to be addressed. The implementation of city-wide 30km/h speed limit is the since-long waited, single road safety measure with such a significant improvement at such a low cost. Such a high societal impact for such a small change in our habits.
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The Athens traffic problem, September 2024

Kathimerini: An increase in the number of vehicles, stagnation in the use of public transport and lack of traffic management is the triptych that is increasingly aggravating the traffic problem in Athens. Given that the increase in the number of vehicles is expected to continue, interventions should be made both to shift the use of Public Transport and improve traffic management, especially in the centre of Athens. With the promotion of Public Transport, at least in the most congested areas of traffic, being a one-way street, without proper management, traffic congestion will get worse in the coming years. Traffic counts revealed that congestion on the main roads of Athens will become worse in the coming years without measures.
IRF
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NTUA Publishes the First-Ever Review of City-Wide 30 km/h Speed Limit Benefits in Europe, September 2024

IRF newsletter: The National Technical University of Athens (NTUA) has recently published a paper titled “Review of City-Wide 30km/h Speed Limit Benefits in Europe” authored by George Yannis and Eva Michelaraki. It is the first-ever scientific review of city-wide 30 km/h speed limit benefits in Europe. Evaluation results from 40 different cities across Europe (including Paris, London, Brussels, and Helsinki) demonstrated that 30 km/h speed limits have led to significant reductions: 37% of road crash fatalities, 18% in emissions, 2.5dB in noise pollution and 7% in fuel consumption (on average). Such a high societal impact for such a small change in our habits.
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Speed and safety cannot coexist, July 2024

Kathimerini: Road crashes are one of the leading causes of deaths and serious injuries worldwide. According to the World Health Organization, 1.19 million people die each year as a result of road traffic crashes. In addition, road crashes are the 12th leading cause of death for all ages worldwide, while they consist the leading cause of death for children and young adults aged 5–29 years. Among continents, the highest number of road fatalities per 100 000 inhabitants is recorded in Africa (19), while the lowest mortality rate is in Europe (7 deaths per 100 000 inhabitants).
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The problem with road traffic crashes in Greece, July 2024

Kathimerini: The leading cause of the high number of road crashes in Greece lies mainly in the inadequate and systematic enforcement, especially of dangerous offences, so that it is perceived by all drivers and obliges them to improve their behaviour. The main concern is the speeding enforcement as a matter of priority, especially in cities and the interurban network, where most offences are detected. Particular emphasis should be given to the helmet and seatbelt use as well as driving under the influence of alcohol or using a mobile phone.
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Safer Micromobility, July 2024

Cities in Motion, Polis Magazine: Micromobility provides viable options for car-free travel and improves connectivity to public transport, but it must be safe. The uptake of micromobility, boosted by the arrival of privately owned and shared e-scooters and e-bikes, benefits people and cities, but also raises challenges for safety within busy city spaces. Findings from an interesting Report authored by George Yannis, Virginia Petraki and Philippe Crist, revealed that micromobility is becoming safer, but an increase in severe injuries from e-scooter crashes is cause for concern. Overall, shared e-scooter casualty risk is on the decline in Europe, with usage increasing faster than reported injuries.
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Should 30km/h speed zones be introduced in towns and cities?, July 2024

News Australia: Councils around Australia are introducing 30km/h speed zones — with more considering the move — in a bid to reduce the number of vehicle collisions and thus make cities safer for pedestrians, cyclists and drivers. The City of Sydney has imposed 40km/h limits on council-controlled roads, and Lord Mayor Clover Moore has signalled some will be reduced to 30km/h, reports Special Broadcasting Service (SBS) Australia. Lowering speed limits on local roads can improve the liveability of an area. There is global precedent, with new research revealing safety increased across 40 different cities across Europe with 30km/h zones.
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NTUA Publishes the First-Ever Review of City-Wide 30 km/h Speed Limit Benefits in Europe, July 2024

IRF: The National Technical University of Athens (NTUA) has recently published a paper titled “Review of City-Wide 30km/h Speed Limit Benefits in Europe” authored by George Yannis and Eva Michelaraki. It is the first-ever scientific review of city-wide 30 km/h speed limit benefits in Europe. Evaluation results from 40 different cities across Europe (including Paris, London, Brussels, and Helsinki) demonstrated that 30 km/h speed limits have led to significant reductions: 37% of road crash fatalities, 18% in emissions, 2.5dB in noise pollution and 7% in fuel consumption (on average). Such a high societal impact for such a small change in our habits.
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A review of city-wide 30 km/h speed limit benefits in Europe, July 2024

CityLogistics: European cities increasingly implement 30 km/h speed limits across street networks. A new paper aimed to evaluate the effectiveness of such speed limits in Europe. Quantitative methods and qualitative assessments were used to condense research findings. The study examined the impact of city-wide 30 km/h speed limits on safety, the environment, energy consumption, traffic, livability, and health before and after their phased implementation. The systematic review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines.
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30 km/h Speed Limit Benefits in Europe, July 2024

RoadSafe News: A paper titled “ Review of City-Wide 30km/h Speed Limit Benefits in Europe ” authored by George Yannis and Eva Michelaraki has been published in Sustainability. This study allows the quantification of the benefits in safety, environment, energy, traffic, livability, and health before and after the phased implementation of city-wide 30 km/h speed limits. Results from 40 different cities across Europe (including Paris, London, Brussels, and Helsinki) demonstrated that 30 km/h speed limits have led to significant reductions: 37% in road crash fatalities, 18% in emissions, 2.5dB in noise pollution and 7% in fuel consumption (on average), with very small variations of average traffic speed.
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30km/h works and saves lives, July 2024

Clean Cities Campaign: 30km/h speed limits help save lives, create healthier and more liveable cities and are gaining ground in Europe! 🔍 A systematic review of 40 European cities now confirms that a 30km/h speed limit improves road safety and creates healthier and more liveable cities. What are the results? On average, implementing 30 km/h speed limits resulted in: 1️⃣ -23% road crashes 2️⃣ -38% injuries 3️⃣ -37% fatalities In addition, the review also found evidence that 30km/h are good for the environment and our health (though these results are less robust due to only few cities having collected data on these issues): • emissions decreasing on average by 18% 😷 • noise pollution levels reduced by 2.5 dB 🔉 • fuel consumption decreased by 7% ⛽
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Evidence is conclusive: City-wide 30km/h zones benefit everyone, July 2024

Hafez Alavi: Research at National Technical University of Athens led by Prof George Yannis shows that "On average, the implementation of 30 km/h speed limits in European cities demonstrated a 23%, 37%, and 38% reduction in road crashes, fatalities, and injuries, respectively. Lower speed limits also yielded environmental benefits, with emissions decreasing on average by 18%, noise pollution levels by 2.5 dB, and fuel consumption by 7%, indicating enhanced fuel efficiency and reduced environmental impact.
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More and more cities introduce speed limits of 30 km/h, July 2024

Lior Steinberg: A new study of 40 cities has a simple answer: YES. A systematic review by George Yannis and Eva Michelaraki collected data from European cities, including Brussels, Paris, and Zurich, and found that the implementation of 30 km/h speed limits led to: 💥 up to 38% reduction in road crashes, fatalities, and injuries 💨 emissions decreased on average by 18% 🔇 noise pollution levels decreased by 2.5 dB ⛽︎ fuel consumption decreased by 7%, indicating enhanced fuel efficiency and reduced environmental impact. There are no more excuses. The 30 km/h limit saves lives and improves the quality of cities!
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Cities that reduce speed limits improve road safety and cut emissions, European study finds, July 2024

The Progress Playbook: The implementation of 30km/h speed limits in numerous European cities has yielded significant benefits for residents, with no meaningful impact on travel times, a new study has concluded. In recent years, major cities including Paris, Zurich, Amsterdam, and Brussels have lowered the default speed limit in an effort to make streets safer and quieter. The Welsh government recently applied the same policy wherever cars mix with pedestrians and cyclists.
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New study looks at effects of 30 km/h speed limits, July 2024

Milan Tešić: Incredible findings on the impact of city-wide 30 km/h speed limits in Europe! George Yannis and Eva Michelaraki's research reveals a substantial decrease in road crashes, fatalities, and injuries by 23%, 37%, and 38% respectively. Moreover, the implementation of lower speed limits has resulted in noteworthy environmental benefits, including reduced emissions, noise pollution levels and fuel consumption. These results underscore the potential for significantly improving safety and sustainability in urban areas.
RodKing
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New study looks at effects of 30 km/h speed limits, July 2024

Rod King: The claim that 30 km/h speed limits lead to increased traffic congestion and higher congestion costs is a myth, unsupported by evidence, according to a new paper by George Yannis and Eva Michelaraki of the National Technical University of Athens. The study reports that examination of traffic patterns in Switzerland revealed that 30 km/h limits allowed the road system to accommodate cars more efficiently, resulting in faster overall travel times. Meanwhile, vehicle damage claims in Wales have fallen by 20% at one leading car insurer since a nationwide 20mph speed limit was introduced there last September.
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City-Wide 30 km/h Speed Limit: what are the impacts on road safety, pollutant emissions and noise?, July 2024

Christophe Ramond: Evaluations carried out in 40 different European cities, including Brussels, Paris and Zurich, were collected and scrutinised by researchers from the National Technical University of Athens. Their findings show that, on average, the introduction of 30 km/h speed limits in European cities led to a 23%, 37% and 38% reduction respectively in the number of road accidents, fatalities and injuries. Lower speed limits have also had a beneficial effect on the environment, with CO2/Nox emissions falling by an average of 18%, noise emissions by 2.5 dB and fuel consumption by 7%, indicating an improvement in fuel efficiency and a reduction in environmental impact.
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New study looks at effects of 30 km/h speed limits, July 2024

ETSC newsletter: The claim that 30 km/h speed limits lead to increased traffic congestion and higher congestion costs is a myth, unsupported by evidence, according to a new paper by George Yannis and Eva Michelaraki of the National Technical University of Athens. Enforcing a general city-wide 30 km/h speed limit is more cost-effective than introducing it gradually, according to the study authors. While there are initial expenses, such as adjusting traffic signals, these are outweighed by the broader costs associated with higher speeds, making the policy an investment in public health.
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Slowing down is the only measure that saves lives, quickly and at a low cost, June 2024

DGT magazine - Revista Tráfico y Seguridad Vial: The significance of Prof. George Yannis' challenge extends far beyond the physical feat of covering 1,266 km in Marathons and much more in training. It is about boosting the message for city-wide 30km/h speed limit which has such a great impact on road safety, public health and environmental sustainability in cities. Additionally, it is about fostering a culture of responsible urban planning and encouraging policymakers to implement key measures that prioritize human life and well-being (travellers instead of vehicles).
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Powered Two Wheelers’ key challenges in Greece and Europe, June 2024

ETSC PIN Conference: To enhance the safety of Powered Two-Wheelers , a city-wide implementation of 30km/h speed limits is essential. This measure ensures that all vehicles, including PTWs, operate at slower speeds, reducing the likelihood and severity of crashes. Consequently, this also improves the safety of other vulnerable road users. Increasing helmet use is critical, supported by heightened traffic control measures and targeted awareness campaigns for both professional and tourist riders.
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NTUA Professor George Yannis runs 30 Marathons in 30 months for 30km/h speed limit in cities, June 2024

NTUA newsletter: The Professor and Director of the Department of Transportation Planning Engineering of the School of Civil Engineering at the National Technical University of Athens (NTUA) George Yannis, has started a campaign to run 30 Marathons in 30 months in order to promote the 30km/h speed limit in cities. The NTUA Rectorate actively supports the challenge of his colleague George Yannis and invites you to support his efforts for safer roads and mobility in cities for all.
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The adoption of a 30 km/h speed limit is in the right direction, June 2024

Driving School Iaveris: In Switzerland, for example, the reduced speed limit has allowed the road network to efficiently accommodate more vehicles, resulting in a reduction in travel time per vehicle. In addition, research results have shown that reducing the speed limit by 10 km/h can cause a 40% reduction in noise pollution. Furthermore, in the long term, reducing the speed limit to 30 km/h should also help in economic terms. Although this may not be the case initially, as additional resources are needed to install new traffic signs, the reduction in accidents will result in a commensurate reduction in costs in terms of public health. In addition, in Wales, which was the first country to adopt this limit in every town, there was a 20% reduction in car damage. The 30 km/h speed limit has been adopted in cities in many European countries such as Austria, the Netherlands, Belgium, Italy, France, the Netherlands, Belgium, France, the United Kingdom, Germany, etc.
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Research on the impact of the 30 km/h limit in cities, June 2024

Getelectric: More and more European cities are systematically working towards the adoption of the 30 Km/h limit in the urban fabric, which is expected to be implemented at some point in Greek cities as well. However, its benefits and impacts are different from city to city and it is always useful to look at data and "numbers" to get an idea of the change that such a move brings. A paper entitled "Review of City-Wide 30km/h Speed Limit Benefits in Europe ", authored by George Yannis and Eva Michelaraki, published in Sustainability. The results from 40 different European cities (including Paris, London, Brussels and Helsinki) showed that 30 km/h speed limits led to significant reductions: 37% in traffic fatalities, 18% in emissions, 2.5dB in noise pollution and 7% in fuel consumption (on average), with very small variations in average traffic speed.
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Professor George Yannis runs 30 Marathons in 30 months to prevent drivers to speeding, June 2024

Eleftheros Typos: Life is a Marathon and our efforts for safe mobility everywhere and for all are continuous before, during and after the challenge of 30 Marathons. The widespread publicity and the gradual awareness and acceptance of the benefits of driving at lower speeds, which we achieve through the 30 Marathons, support society and the authorities to accelerate the necessary changes. Any life saved from this new mobility paradigm I promote, fully worth all the kilometres run in this highly challenging journey.
MotorOne
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Running 30 Marathons in 30 months for 30km/h speed limit in all cities, May 2024

MotorOne: His campaign has a particularly significant social impact, as depicted by international findings, demonstrating an average 37% reduction in fatalities in road crashes in cities which have adopted the 30km/h speed limit. In a recent study conducted by Prof. Yannis' scientific research team, it is estimated that city-wide 30 km/h speed limits on the road network of all cities in Greece (with the exception of major axes) will save lives annually.
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Review of city-wide 30 km/h speed limits benefits in Europe, May 2024

Sustainability: On average, the implementation of 30 km/h speed limits in European cities demonstrated a 23%, 37%, and 38% reduction in road crashes, fatalities, and injuries, respectively. Lower speed limits also yielded environmental benefits, with emissions decreasing on average by 18%, noise pollution levels by 2.5 dB, and fuel consumption by 7%, indicating enhanced fuel efficiency and reduced environmental impact. Encouraging citizens to embrace walking, cycling and utilizing public transit services can further contribute to a safer and environmentally sustainable urban environment.
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George Yannis runs 30 Marathons in 30 months for 30km/h speed limit in cities, May 2024

Naftemporiki: By setting a 30 km/h speed limit in cities, even with moderate or minimal enforcement, many lives will be saved. This happened very quickly in Paris, Brussels and Wales. Recently, it started in Amsterdam and Bologna and there were complaints, but after a while, everyone saw that this measure does not impact daily life. During the day, most people already drive at low speeds anyway. The change is at night when most crashes happen, but it is minor since few need to reduce their speed.
HITE
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NTUA Professor George Yannis runs 30 Marathons in 30 months for 30km/h speed limit in cities, May 2024

Hellenic Institute of Transportation Engineers: The Professor and Director of the Department of Transportation Planning Engineering of the School of Civil Engineering at the National Technical University of Athens (NTUA) George Yannis, has started a campaign to run 30 Marathons in 30 months in order to promote the 30km/h speed limit in cities. The Hellenic Institute of Transportation Engineers actively supports the challenge of Prof. George Yannis and invites you to support his efforts for safer roads and mobility in cities for all.
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What is an NTUA Professor doing about the adoption of the 30km/h speed limit in cities?, May 2024

Car & Motor: NTUA Professor George Yannis has started a campaign to run 30 Marathons in 30 months in order to promote the 30km/h speed limit in cities. He has already successfully completed 24 Marathons in 24 months, all performing sub 4-hours, and there are 6 remaining Marathons to complete his challenge in November 2024 at the Athens Marathon.
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Probation for novice drivers in Greece, May 2024

Car & Motor: The main cause of road crashes in Greece and worldwide is speeding. It is underestimated by drivers, the Authorities, the industry and the Media. In Greece, 40% of road crashes are single-vehicle crashes. This means that no other vehicle was involved and is mostly due to the excessive speed of the vehicle itself. The corresponding percentage in Europe is 30% and proves that in Greece, drivers exceed the speed limits more than the rest of EU.
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NTUA Professor George Yannis runs 30 Marathons in 30 months for 30km/h speed limit in cities, April 2024

TV Creta: The Professor and Director of the Department of Transportation Planning Engineering of the School of Civil Engineering at the National Technical University of Athens (NTUA) George Yannis, has started a campaign to run 30 Marathons in 30 months in order to promote the 30km/h speed limit in cities. Running with the emblem of the NTUA, Prometheus the Fire-bearer, he has already successfully completed 24 Marathons in 24 months, all performing sub 4-hours, and there are 6 remaining Marathons to complete his challenge in November 2024 at the Athens Marathon.
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Running 30 Marathons in 30 months for 30km/h speed limit in all cities, April 2024

School of Civil Engineering, NTUA: Running with the emblem of the NTUA, Prometheus the Fire-bearer, he has already successfully completed 24 Marathons in 24 months, all performing sub 4-hours, and there are 6 remaining Marathons to complete his challenge in November 2024 at the Athens Marathon. This is an effort that has made a significant contribution to raising awareness of both society and the Authorities for a better quality of life in cities, with calm driving for safe, healthy and green trips for all city travellers.
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NTUA Professor George Yannis runs 30 Marathons in 30 months for 30km/h speed limit in cities, April 2024

Creta24: His campaign has a particularly significant social impact, as depicted by international findings, demonstrating an average 37% reduction in fatalities in road crashes in cities which have adopted the 30km/h speed limit. In a recent study conducted by Prof. Yannis' scientific research team, it is estimated that city-wide 30 km/h speed limits on the road network of all cities in Greece (with the exception of major axes) will save lives annually: - 104 fatalities, (out of 635 in all of Greece) - 123 seriously injured, (out of 636 in all of Greece) - 783 slightly injured, (out of 12,533 in all of Greece)
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NTUA Professor George Yannis runs 30 Marathons in 30 months for 30km/h speed limit in cities, April 2024

NTUA Rectorate: The Professor and Director of the Department of Transportation Planning Engineering of the School of Civil Engineering at the National Technical University of Athens (NTUA) George Yannis, has started a campaign to run 30 Marathons in 30 months in order to promote the 30km/h speed limit in cities. The NTUA Rectorate actively supports the challenge of his colleague George Yannis and invites you to support his efforts for safer roads and mobility in cities for all.
RunBeat
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NTUA Professor George Yannis runs 30 Marathons in 30 months for 30km/h speed limit in cities, April 2024

RunBeat: Professor George Yannis's campaign has a particularly significant social impact, as depicted by international findings, demonstrating an average 37% reduction in fatalities in road crashes in cities which have adopted the 30km/h speed limit. In a recent study conducted by Prof. Yannis' scientific research team, it is estimated that city-wide 30 km/h speed limits on the road network of all cities in Greece (with the exception of major axes) will save lives annually: - 104 fatalities, (out of 635 in all of Greece) - 123 seriously injured, (out of 636 in all of Greece) - 783 slightly injured, (out of 12,533 in all of Greece).
RunBeat
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NTUA Professor George Yannis runs 30 Marathons in 30 months for 30km/h speed limit in cities, April 2024

RunBeat: Professor George Yannis's campaign has a particularly significant social impact, as depicted by international findings, demonstrating an average 37% reduction in fatalities in road crashes in cities which have adopted the 30km/h speed limit. In a recent study conducted by Prof. Yannis' scientific research team, it is estimated that city-wide 30 km/h speed limits on the road network of all cities in Greece (with the exception of major axes) will save lives annually: - 104 fatalities, (out of 635 in all of Greece) - 123 seriously injured, (out of 636 in all of Greece) - 783 slightly injured, (out of 12,533 in all of Greece).
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NTUA Professor George Yannis runs 30 Marathons in 30 months for 30km/h speed limit in cities, April 2024

NTUA Rectorate: Running with the emblem of the NTUA, Prometheus the Fire-bearer, he has already successfully completed 24 Marathons in 24 months, all performing sub 4-hours, and there are 6 remaining Marathons to complete his challenge in November 2024 at the Athens Marathon. This is an effort that has made a significant contribution to raising awareness of both society and the Authorities for a better quality of life in cities, with calm driving for safe, healthy and green trips for all city travellers.
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About a Professor who is running 22 Μarathons to reduce speed limit in cities, April 2024

Ana Cergolj Kebler: In 22 months, across European cities, he runs 22 marathons to advocate for reducing speed limits in urban areas to 30 km/h. He has 10 more marathons to go. Yes, 22 marathons in 22 months. Perhaps it helps that marathons are in his DNA- he is Greek. Prof. Yannis, who is deeply involved in traffic telematics, also served as the chair of the European Commission’s Excellence in Road Safety award jury.
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30 Marathons in 30 months through cities with 30 km/h speed limits, April 2024

Portuguese Road Prevention: After more than 30 years of dedication to the science of road safety and several marathon races, George Yannis combined both passions for one cause: running 30 marathons in 30 months in order to actively promote the adoption of the 30 speed limit. km/h in as many cities as possible across the world, as a key policy for safer, healthier and greener cities.
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Benefits from city-wide 30 km/h speed limit, April 2024

19th International Conference Road Safety in Local Communities: Based on meta-analyses from 18 cities and 60 studies, city-wide 30km/h speed limits led to average reduction in: ➢ Fatalities by 37% ➢ Serious injuries by 38% ➢ Road crashes by 23% ➢ Emissions by 18% ➢ Noise by 2.5 db ➢ Fuel consumption by 11% ➢ Traffic congestion by 4%
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22 Marathons in 22 months - A report of an amazing experience, April 2024

Prevenção Rodoviária Portuguesa: George Yannis has already successfully completed 22 marathons in 22 months, all under 4 hours, and has 8 marathons left to complete the challenge in November 2024 at the Athens Marathon. More than 40% of lives will be saved with the introduction of 30 km/h zones across Europe.
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22 Marathons in 22 months - A report of an amazing experience, April 2024

Sam Waide: George, hats off to you. 22marathons in 22months. Wow….if EU governments deployed your determination, tenacity and courageness over the next 22years by prioritising saving lives on our roads, hashtag#visonzero, by Year2050 we will achieve well in advance, and our children, our future leaders, will take their hats off to You, and the leaders of Year2024. Legacy with impact 👍
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Running 30 Marathons in 30 months for 30km/h speed limit in all cities, March 2024

Department of Transportation Planning and Engineering, NTUA: Running with the emblem of the NTUA, Prometheus the Fire-bearer, he has already successfully completed 24 Marathons in 24 months, all performing sub 4-hours, and there are 6 remaining Marathons to complete his challenge in November 2024 at the Athens Marathon. This is an effort that has made a significant contribution to raising awareness of both society and the Authorities for a better quality of life in cities.
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Dubai Marathon 2024 - The Greeks, January 2024

Runner Magazine: Prof. George Yannis, who has set a campaign to run 30 marathons in 30 months for 30km/h in all cities worldwide, successfully finished the Marathon. As he mentioned: "The race was very fast and flat; a straight 13km back and forth. There were huge avenues with excellent tarmac. We started with 18°C and finished with 27°C and full humidity. The organisation was impeccable. They had water almost every mile."
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30km/h Speed Limit for Safer, Healthier and Greener Cities, December 2023

Ben Ross: Latest paper in on while lowering speed limits in urban areas (and rural areas not guarded by median barriers and roundabouts) is a sound idea Mainly due to reduced noise, reduced pollution, reduced numbers of crashes and crash risk, reduced or elimination of deaths and serious injuries, better transit efficiency, better amenities and satisfaction especially in residential and commercial areas (extension of living spaces) and increased averages speeds and efficiency (less stop starting).
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New road axes in Attica, December 2023

Kathimerini: The use of the new legislation for proposals of the developers for new concession roads in Attica is an excellent solution to accelerate the implementation of the necessary transport infrastructure and especially the network of ring roads that the Region of Attica needs. Some of these projects have been discussed for decades while others are new. Decisions should be taken on the basis of the optimum combination of transport, technical and economic criteria.
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30km/h Speed Limit for Safer, Healthier and Greener Cities, December 2023

Michael Roth: This summary details the safety, air pollution and noise impacts of the 30kph speed limits that are taking over European cities. For instance, Brussels and Paris have introduced 30km/h limits in order to improve air quality and reduce noise pollution and traffic collisions. Indeed, a 30 kph speed limit reduces noise by 3 decibels. The reason for reducing Zurich’s speed limit was first and foremost to reduce noise pollution. Do we value our citizens enough to follow?
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George Runs 30 Marathons in 30 Months for 30km/h Speed Limit in all Cities, December 2023

IRF Newsletter: Scientists urge continuously for lower speeds worldwide; however, speeding remains a model and sought-after behaviour among most drivers and riders, especially the young, and is very often promoted or largely tolerated by society, the authorities, and the industry. During the 30 months, he will focus on scientific planning and preparation, systematic effort, and continuous monitoring, and dedication in order to complete the 30 marathons.
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Effectiveness of city-wide 30 km/h speed limit, November 2023

International Traffic Safety Data and Analysis Group (IRTAD): The reduction of speed limits to 30km/h in cities leads to a significant reduction not only in fuel/energy consumption and air pollution but also in road crashes and congestion without a significant decrease in travel times. The implementation of a city-wide 30 km/h speed limit requires careful planning and consideration of various modalities. Launching public awareness campaigns and encouraging the use of public transport and active mobility could be proved beneficial.
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Congestion at Kifissos Road Axis is not the problem, November 2023

Parapolitika: As Professor George Yannis highlighted, no city in Europe has their traffic problems solved only by infrastructure projects. We should understand that the more space we give to cars, the more space they will take up and more traffic will be induced. As Transportation Scientists have been arguing for decades, the solution is not related to the road infrastructure. Instead, he revealed that the solution lies into Public Transport.
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The culprits complain about traffic, November 2023

Vima Science: NTUA Professor George Yannis explains the positions for solving the big traffic congestion problem of Athens. These positions are supported in practice by running 30 marathons in 30 months. The aim is to set 30 km/h speed limits for safe and green cities. To achieve this goal, 1,266 kilometres will be travelled by himself in 30 months, an amazing "journey" started in July 2022 and is expected to end in November 2024.
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Stopping distance at different speeds: 30km/h, 40 km/h and 50 km/h, October 2023

Liikennevirta: City-wide speed limits of 30 km/h is primarily for saving lives of pedestrians, cyclists and motorcyclists. Passenger car drivers should understand that beyond their personal safely, they should care for the safety of the vulnerable road users who are not protected within a car cabin and there are so many in a city. Please mind that on the roads: other kids are playing this game too.
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Should Vasilissis Olgas Avenue be reopened?, October 2023

Kathimerini: Is Vasilissis Olgas the "new" Panepistimiou? The new Athenian "serial" that will divide the city and its suffering residents in the coming years? Architects, urban planners and transportation engineers with whom we spoke tell us that in the case of this privileged axis that separates the Temple of Olympian Zeus and Zappeio, there may be much more at stake than in Panepistimiou.
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The three "K" of the traffic in Attica: The North, the South and the traffic congestion, October 2023

Kathimerini: Illegal stopping and parking on main roads consist a major problem. Recently, measures have been announced to decongest Kifissos, such as the placement of two traffic police cranes along the Avenue in order to intervene in cases of road crashes. At the same time, motorcycles are being mobilised to solve problems on the main road.
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Professor George D. Yannis runs 30 marathons in 30 months promoting the introduction of a 30 km/h speed limit in cities, October 2023

Polish Road Safety Observatory: NTUA Professor George Yannis' goal is to mobilize society, authorities, industry representatives and everyone involved in the decision-making process to change the current patterns of rapid urban transport towards safe, healthy and ecological mobility available everywhere and for everyone.
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A Greek is running marathons to slow down traffic in our cities, October 2023

Abel Coentrão (Público): During 30 months, George will focus on scientific planning and preparation, systematic effort and continuous monitoring and dedication in order to complete 30 Marathons. Starting with his globally recognised research group, the NTUA Road Safety Observatory and the wide network of his worldwide cooperations, George will ally with everyone who wishes to make the voice of 30km/h Cities as strong as possible, as soon as possible.
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Road crashes: An increase in road traffic fatalities, October 2023

Kathimerini: In Greece, 36% of road fatalities are power two wheelers (the highest percentage in the European Union). Professor George Yannis mentions that managing efficiently (by police enforcement and massive campaigns) the five major traffic killers (speeding, mobile-phone-use, drink-and-drive, seat belt and helmet non-use) can be proved highly beneficial with a great number of lives saved even at short term.
RunnerMagazine
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Brussels Airport Marathon & Half Marathon - The Greeks, October 2023

Runner Magazine: Many Greek runners actively participated in the Brussels Airport Marathon & Half Marathon who either live permanently in Belgium or travelled to run the marathon. Among them was George Yannis who continues the challenge of 30 marathons in 30 months in order to promote 30km/h speed limit in cities.
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30 marathons in 30 months: A campaign for road safety, October 2023

International Association of Public Transport (UITP): Join the remarkable journey of Professor George Yannis, as he runs 30 marathons in 30 months to champion safer, healthier, & greener cities! UITP is proud to rally behind the 30km/h speed limit. The sooner they are adopted the more lives are saved and this is the highest compensation for George's cause. Let's make our cities safer and better together!
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How to promote road safety? Professor runs 30 marathons for a 30km/h speed limit, October 2023

International Association of Public Transport (UITP): The discussion and introduction of 30km/h city zones faces strong reactions and rigid inertia. On the other hand, supporters’ voices are weaker and inefficient, resulting in hesitant politicians and authorities. That is the reason why George decided to step beyond the continuous scientific pleas and promote more actively the 30km/h city through my challenge of 30 marathons in 30 months.
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34% increase in road crashes in 2023 compared to 2020, September 2023

In Protothema: Professor George Yannis mentions that we can significantly improve our road behaviour and safety with driver telematics. As he highlights, telematics can lead to a significant reduction of road crashes (~30%) in Greece within a 2-3 year period. If telematics is applied to all Greek drivers, Greece can save more than 180 lives every year and drivers can save up to 30% on fuel costs and reduce their CO2 emissions.
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Significant benefits from speed limits reduction, September 2023

In Energy Save Conference organised by BeBest: Speed limits reduction gaining rapid acceptance across Europe and more and more Europe's cities adopting lower speed limits. Public acceptance of speed limits reduction tends to improve over time. Pedestrians, cyclists and public transport passengers are more strongly in favour of lower speeds for private cars.
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30km/h speed limit sign painted on asphalting road.

Automated Vehicles and Road Safety: expectations and potential benefits, July 2023

PAVE Europe Virtual Panel: There is a need to address simultaneously several crash risk factors (e.g. 30km/h city wide speed limits). - Need for Efficient and Clear Communication Messages, beyond scientific pleas - Collaboration with Social Culture Specialists - Prioritizing VRUs safety through 30 km/h city-wide speed limits - Promoting more actively the 30 km/h citywide speed limit through the challenge of running 30 Marathons in 30 months.
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Why city-wide 30km/h speed limit?, July 2023

In Road Safety Workshop organised by Technical University of Munich (TUM): Setting a speed limit of 30 km/h (20 mph) where people and traffic mix, make streets safer, healthier, greener and more liveable. A Cost Benefit Analysis for the City of Athens was implemented till the year 2030, by including all the costs (implementation and operational) and all the benefits (road crashes, fuel consumption, emissions).
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George runs 30 Marathons in 30 Months, July 2023

In European Union Road Federation (ERF) newsletter: After more than 30 years of dedication to road safety science and several Marathon races, George Yannis decided to combine both passions for a cause: to run 30 Marathons in 30 months to actively promote the adoption of 30km/h speed limit in cities. By running Marathons, during these 30 months, he will promote actively the 30 km/h city-wide speed limits as the best paradigm for safer, healthier, and greener cities.
RunnerMagazine
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Copenhagen Marathon - The Greeks, May 2023

Runner Magazine: The Copenhagen Marathon took place on Sunday 14 May 2023 with several runners from all over the world and quite hot weather for the city, with temperatures well above 20 degrees, making it difficult for the 10,793 runners who started the race. The race eventually saw 10,236 runners finish, 2,611 women (25.5%) and 7,625 men (74.5%), while 557 dropped out, a rate of 5.2% quite high for the ease of the course, which shows how difficult the weather conditions made the runners' efforts.
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30 Marathons in 30 months for 30km/h in all cities, May 2023

In NRSO newsletter: NTUA Professor George Yannis, after more than 30 years of dedication to road safety science and several Marathon races, decided to combine both passions for a cause: to run 30 Marathons in 30 months in order to actively promote the adoption of 30km/h speed limit in as many cities as possible worldwide, as a fundamental policy for safer, healthier and greener cities for all. Speeding is the number one cause of road crashes worldwide and the active promotion of 30 km/h cities can save 50% of lives lost today.
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Social Cost-Benefit Analysis of key urban mobility policies in Athens, May 2023

In International Transport Forum Summit: Social CBA supports green and safe urban mobility policies to efficiently face society skepticism and inertia. Social CBA can demonstrate societal benefits, increasing the acceptability of changes by city travelers and motivating Authorities and industries to implement greener and safer solutions. The use of social CBA can support the adoption of sustainable urban mobility and safety policies and convince the society (citizens and politicians) to support large-scale interventions.
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Promoting 30 km/h speed limit: Running 30 Marathons in 30 months, May 2023

In Road Safety Research Challenges Workshop organised by NTUA: Reductions in speed limits are intended to improve road safety by decreasing travelling speed and thus reducing the risk of crashes occurring and the severity of crashes that do occur. Streets that promote safe walking and cycling can reduce car dependency and harmful vehicle emissions that contribute to climate change.
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The profile of the dangerous driver on the Greek roads, April 2023

Kathimerini: In Greece, male drivers are six times more dangerous than female drivers, in proportion to the kilometres driven. Male drivers take more risks, drive faster and keep shorter distances from vehicles in front of them, resulting in more and more serious road crashes. As Professor George Yannis highlights, speed increases both the frequency and severity of road crashes.
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Story #19: George, April 2023

Luca Pascotto: George Yannis is a well-known and respected road safety expert. But he is also a long-lasting marathon runner. George started running systematically long distances at the age of 16 and during his life he completed more than 40 marathons. He decided to combine these two passions and launched a personal campaign to deliver road safety messages during marathons.
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30km/h speed limit for safer, healthier and greener cities, March 2023

ECTRI: George Yannis decided to combine both passions for a cause: to run 30 Marathons in 30 months in order to actively promote the adoption of 30km/h speed limit in as many cities as possible worldwide, as a key policy for safer, healthier and greener cities. ECTRI is happy to support the cause and to bring light to Professor Yannis' initiative to step beyond the continuous scientific pleas and promote more actively the 30 km/h city through his challenge of 30 Marathons in 30 months.
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30 Marathons in 30 months to promote 30 km/h, March 2023

European Transport Safety Council (ETSC): A wonderful initiative from our friend George Yannis. 30 marathons in 30 months to promote 30 km/h speed limits in cities. Speeding is the number one cause of road crashes worldwide and I count on your support to promote actively 30km/h cities and save 50% of lives lost today; following and reposting is highly valuable throughout this challenging journey.
RunnerMagazine
30km/h speed limit sign painted on asphalting road.

30 Marathons in 30 months for 30km/h in cities, March 2023

Runner Magazine: Scientific evidence so far demonstrates more than 40% lives saved with the introduction of 30km/h zones; in parallel to significant environmental, energy and health impacts with less fuel consumption and more walking and cycling. That is the reason why George decided to step beyond the continuous scientific pleas and promote more actively the 30 km/h city through my challenge of 30 Marathons in 30 months.
nrso
30km/h speed limit sign painted on asphalting road.

30 Marathons in 30 months for 30km/h in all cities, March 2023

NTUA Road Safety Observatory (NRSO): Professor George Yannis, after more than 30 years of dedication to road safety science and several Marathon races, decided to combine both passions for a cause: to run 30 Marathons in 30 months in order to actively promote the adoption of 30km/h speed limit in as many cities as possible worldwide, as a fundamental policy for safer, healthier and greener cities for all.
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