Effect of 20 mph speed limits on traffic injuries in Edinburgh, UK: a natural experiment and modelling study.
Kyriaki Kelly KokkaGlenna NightingaleAndrew James WilliamsAli AbbasValentin PopovStephen SharpRuth F HunterRuth JepsonJames WoodcockPublished in: Journal of epidemiology and community health (2024)
Our results indicate that the introduction of 20 mph limits resulted in a reduction in collisions and casualties 3 years post implementation. However, the effect exceeded expectations from changes in speed alone, possibly due to a wider network effect.