A41 Tring Hill Interchange

Layout and signage

Wendover B4009
Dunstable
B488 (B489)
Tring B4635
  B4009     B488
(B489)

B4635

  Dunstable
B488 (B489)
Tring B4635
Wendover B4009

Lane configuration

LanesLanesLanesLanes

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

LanesLanesLanesLanes

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

In this section

What's new

The road that made no sense

It was the UK's only single-carriageway motorway, and twenty years ago it ceased to exist. This is the story of the strange fascination it held, and of my place in history.

The forever bottleneck, part 2

The second part of the story, where we learn why exactly the M4 gets narrower on the final approach to Europe’s biggest city.

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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Pedestrian Crossings

From Zebra to Pelican and beyond: the comprehensive history of the development of the humble pedestrian crossing.

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