Route
Junction number
M25 J20
Markerpost
Unknown
Name
Kings Langley Interchange
Terminus
Terminus at end of exit list
Other routes
M25, A4251
Authority
Restricted turns
Full access
Services
No services
A41 (M25 J20) Kings Langley Interchange
Layout and signage
Lane configuration
- Lane 1 continues ahead.
- Lane 2 continues ahead.
- Lane 1 continues, with option to exit.
- Lane 2 continues, with option to exit.
Other events
Traffic signals
What's new
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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.
Have you seen...
Roundabouts
The UK has been driving in circles for a hundred years now, and this humble road junction has become part of British culture. Just what is so special about roundabouts?
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Published
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Published
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