In recent years, the implementation of city-wide 30 km/h speed limits has gained increasing attention across Europe. The present research aims to evaluate public perceptions and preferences regarding the acceptance of city-wide 30 km/h speed limits in Greece. Towards that end, an online survey was conducted and data from 800 participants across Greece were collected and analysed. A binary logistic regression model was developed to identify the determinants of acceptance. Results showed that 60% of participants was generally favourable toward the measure, while those who believed that 30km/h speed limit would reduce crashes and not worsen traffic conditions were far more likely to support it. It was demonstrated that support for the policy was strongly associated with perceived safety benefits and positive attitudes toward the new traffic fines. Socio-demographic factors also played a role, with females and middle-aged respondents showing greater support for the measure, while younger and higher-risk drivers were less accepting. The importance of communication strategies emphasizing safety benefits, systematic enforcement and targeted awareness campaigns was highlighted. The study concluded that city-wide 30 km/h speed limit represents not only a traffic regulation but also a catalyst for promoting a new road safety and mobility culture in Greece.
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