Twenty miles per hour speed zones reduce the danger to pedestrians and cyclists.

The studyCleland LC, McComb L, Kee F, et al. Effects of 20 mph interventions on a range of public health outcomes: a meta-narrative evidence synthesis. J Transp Health 2019. doi:10.1016/j.jth.2019.100633This project was funded by the NIHR Policy Research Programme (project number 17/149/19).To read the full NIHR Signal, go to: https://discover.dc.nihr.ac.uk/content/signal-000853/twenty-mph-speed-zones-reduce-the-danger-to-pedestrians-and-cyclists. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.