M4 J1 Chiswick Roundabout

Layout and signage

Central London
Hammersmith
A4
 

A315

A406
   

A205
  N/A

Lane configuration

LanesLanesLanesLanesLanes

  • Lane 1 is gained from the entry sliproad.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.

LanesLanesLanesLanesLanes

  • Lane 1 exits and does not return.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.

Other events

  • Signs End of motorway regulations
  • Signs 40mph speed limit begins
  • Signs Start of motorway regulations
  • Signs 40mph speed limit begins

In this section

What's new

The Ringways Map is here

The wait is over! The full map of the Ringways, London’s unbuilt urban motorway network, is now online. Not even the system's planners had anything like this.

Red, white and blue

Kent County Council is run by eurosceptic nationalists. So why are they putting EU flags on their road signs?

The sunlit uplands

On Saturday 31 May something historic happened. The Heads of the Valleys Road was finally complete.

Share this page

Have you seen...

Harry Yeadon

A civil engineer, working principally in the North West of England, responsible for many of the area's motorways.

About this page

Published

Last updated