20mph speed limit trials

20mph speed limits are being introduced at up to 40 schools and across 2 residential areas over the next year. This trial is part of our drive to create a safer, healthier and more pleasant environment.

The aim is to increase walking and cycling, and to make more vulnerable road users like cyclists, older people and school children feel safer.


The 20mph limits are being implemented in areas highlighted by a road safety review and as a result of residents’ requests for speed restrictions.

Map of affected areas (PDF, 1.5MB)

Monitoring and evaluation

To evaluate the 20mph limit, we'll be gathering data about the speed and volume of traffic, using standard tubes laid across the road, as well as Vehicle Activated Signs (VAS).

VAS also remind drivers and riders to adhere to the speed limit. If motorists are going too fast, they can be set to flash at either 20 or 30mph.

Local schools, businesses and residents views will also be sought before, during and after the 20mph trials. This will help us understand their impact and inform our next step.

If you have any questions about the trials, please email roadsafety@westminster.gov.uk or download the leaflet 

Last updated: 7 November 2017
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