Public Perceptions of 30 km/h Citywide Speed Limits and Urban Liveability: Empirical Evidence from Greece

This study investigates public perceptions in Greece regarding the implementation of citywide 30 km/h (20 mph) speed limits. Based on survey data from 718 respondents and using ordered probit models, the analysis explores the public acceptance of the speed limit intervention as well as its perceived impact on the attractiveness of downtown areas for residential living. The findings of the statistical analysis suggest that perceived air quality improvement, noise reduction, enhanced neighbourhood safety and better access to urban amenities significantly increase support for the 30km/h limit. Public transport users and individuals with higher educational attainment are more likely to support the speed limit intervention, while frequent drivers tend to oppose it. Young respondents show mixed attitudes: they are less likely to support the policy overall but view downtown living more positively under the new speed limit. Perceptions of liveability in downtown areas improve under 30 km/h schemes, especially among youth and those valuing social interaction. Overall, the results show that public support is driven not only by safety considerations but also by broader expectations for urban quality-of-life. The findings of the study are relevant for policymaking and urban planning in the Greek context.