Overview
- The Björn‑Steiger‑Stiftung synthesis reports fewer accidents and injuries after broad 30 km/h rollouts across diverse cities including Berlin, Belfast, Graz, Helsinki, London and Toronto.
- Pedestrian fatality risk was cited at about 3.5% at roughly 24 km/h compared with 37% at about 49.9 km/h.
- City evaluations found notable reductions after implementation, including Graz at −12% accidents in two years, Bologna at −13% in one year and Edinburgh at −43% injured within three years.
- GPS analyses referenced from the United Kingdom showed travel times rose about 3% in residential areas and 5% in city centers, typically under one extra minute on an approximately 8‑kilometer trip.
- Helsinki recorded a 12‑month period without traffic deaths, which planners link in part to wider 30 km/h zones, as Germany’s 2024 rules give municipalities more leeway even as some locales limit or roll back sections and NGOs press for a nationwide default.