A paper titled “Effectiveness of 30 km/h speed limit – A literature review” authored by George Yannis and Eva Michelaraki has been published in Journal of Safety Research. This study evaluates the impact of 30 km/h speed limits on road safety, emissions, fuel consumption, traffic flow, livability and public 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. Public awareness campaigns and promoting active mobility options, such as walking and cycling, could further support the adoption of city-wide 30 km/h speed limits.