A406 Brent Cross Flyover

Layout and signage

Central London
Kilburn
Aylesbury
Hatfield (A1 Link)
A41
  A41     A41
(A1)
  The NORTH
Aylesbury
C. London (West End)
Brent Cross
A41

Lane configuration

LanesLanesLanesLanesLanesLanesLanes

  • Lane 1 is gained from the entry sliproad.
  • Lane 2 is gained from the entry sliproad.
  • Lane 3 continues, with option to exit.
  • Lane 4 continues ahead.
  • Lane 5 continues ahead.

LanesLanesLanesLanesLanesLanesLanes

  • Lane 1 exits and does not return.
  • Lane 2 exits and does not return.
  • Lane 3 continues ahead.
  • Lane 4 continues ahead.
  • Lane 5 continues ahead.

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The forever bottleneck, part 1

The M4 into London was one of the UK's earliest and most ambitious motorway projects. It was bold, pioneering... and almost instantly regretted.

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