A406 Great Cambridge Junction

Layout and signage

Central London
Dalston
Hertford
Enfield
A10
  A10     A111
A10

  Central London
Dalston
Hertford
Enfield
A10

Lane configuration

LanesLanesLanesLanesLanes

  • Lane 1 continues, with option to exit.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.

LanesLanesLanesLanesLanes

  • Lane 1 continues, with option to exit.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.

Other events

  • Signs 40mph speed limit begins
  • Signs 50mph speed limit begins

In this section

What's new

The sunlit uplands

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

Grand openings

Our much-loved Opening Booklets section has two new publications for you to explore, and we’re making some overdue changes to make them easier to find and easier to read.

Silver bullet

The Silvertown Tunnel is finally open for business. One question remains: what’s it for?

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C-Roads

A collection of photos of signs confirming the existence of C-roads.

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