A23 Coulsdon by-pass speed limit increase

Closed 4 Apr 2014

Opened 14 Mar 2014

Results Updated 10 Nov 2014

We considered the comments and views expressed to us, which have helped inform our decision. We plan to go ahead with the extension of the 40mph limit 600 metres north to a point near to the footbridge across the A23.

Our contractors are now working on detailed designs for the scheme and hope to introduce the change in the new year.

The full report can be found here:



We proposed to introduce a change to the maximum speed limit on Farthing Way, Coulsdon by-pass from 30 to 40mph. The existing 40 mph speed limit will be extended about 600 metres north to a point close to the footbridge across the A23, as shown on the attached map below.

We monitored road safety and actual traffic speeds to ensure the safe operation of the road is maintained.

TfL sets speed limits on 5% of London’s busiest roads, which carry around a third of London’s traffic. TfL and the boroughs set speed limits in the context of guidance from the Department for Transport (DfT), which require highway authorities to take account of road safety, active travel, congestion, journey time reliability, cost, the environment, communities and quality of life

Raising the speed limit from 30 to 40 mph on this section of the bypass would provide better continuity and consistency.  Typical existing traffic speeds are closer to 40 mph than 30 mph throughout Farthing Way. However, the collision record on the by-pass does not indicate a speed related road safety problem.


  • Croydon


  • Public
  • Stakeholders
  • Local residents
  • Local businesses


  • Transport for London Road Network