From the boulevards of Paris to the industrial hubs of Stuttgart, a growing number of European cities are rethinking speed. A new survey from Eurocities, the network of major EU municipalities, suggests that lowering speed limits to 30 km/h in targeted areas is saving lives without clogging streets or slowing commuters.
The study, which drew responses from 38 cities in 19 European countries—including France, Spain, Portugal, Belgium, and Germany—found that roughly three-quarters of municipalities that implemented 30 km/h zones reported a drop in road fatalities and serious injuries. More than nine in ten cities observed some positive safety effects in the short to medium term, including fewer accidents, lower vehicle speeds, and reduced noise pollution.
Gradual, Targeted Implementation
Rather than blanket restrictions, most cities adopted a phased, zone-based approach. Speed reductions were concentrated in residential areas, historic centres, and school zones. According to the report, 57% of surveyed cities now have more than half of their road network operating at limits below 50 km/h.
This gradual strategy appears to have eased public acceptance. While nearly half of the cities faced political opposition during planning and rollout, and more than a third encountered public resistance, 65% reported no significant setbacks after implementation. Opposition from both politicians and residents dropped markedly once the measures were in place.
The findings come as the European Union pursues its Vision Zero initiative, aiming to eliminate road deaths entirely by 2050. Preliminary European Commission data for 2025 recorded approximately 19,400 fatalities on EU roads, with car drivers and passengers accounting for 44% of deaths. The economic toll is steep: road crashes cost the EU an estimated 2% of GDP annually, often resulting in permanent disability, chronic pain, and lost livelihoods.
Despite concerns that lower speed limits might increase congestion and travel costs, the Eurocities survey found no overall negative effects on traffic volumes or journey times. Public transport faced only limited, manageable impacts. The report notes that claims of higher congestion costs from 30 km/h limits have not materialised in practice.
The debate over speed limits is part of a broader conversation about urban mobility and safety across Europe. As cities from Brussels to Milan experiment with reduced speeds, the evidence suggests that targeted measures can yield significant safety gains without disrupting daily life. For now, the data points to a simple conclusion: slower streets save lives.
