20 mph speed limits on London's roads (3)

MQT on 2020-03-19
Session date: 
March 19, 2020
Question By: 
Caroline Russell
City Hall Greens
Asked Of: 
The Mayor


What percentage, and how many kilometres of London’s total road network had a 20 mph speed limit when you entered office, and what percentage will have this limit by May 2020?


20 mph speed limits on London's roads (3)

20 mph speed limits on London's roads (3)

Answered By: 
The Mayor

In June 2016 approximately 28 per cent of London’s roads had a 20mph speed limit which equates to 4,784 km of carriageway*.

Currently, as of March 2020, approximately 42 per cent of London’s roads operate with a 20mph speed limit, which equates to 7,430 km of carriageway*. This includes the successful delivery of 20mph speed limits across Transport for London’s road network in Central London, in line with my Vision Zero Action Plan commitments

I do not expect this number to change before May 2020.

Detailed queries relating to the speed limit on borough roads are best directed to individual London councils, who will hold more detailed information about their own road networks.

*the lengths quoted refer to carriageway length in each direction