Route
Junction number
None
Markerpost
Unknown
Name
Colney Hatch Interchange
Type
Terminus
Not a terminus
Other routes
B550
Authority
Restricted turns
Full access
Services
No services
A406 Colney Hatch Interchange
Layout and signage
|
Muswell Hill Friern Barnet Retail Park B550 |
B550 | 
|
B550 |
Muswell Hill Friern Barnet Retail Park B550 |
Lane configuration
- Lane 1 continues, with option to exit.
- Lane 2 splits to create a new lane.
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 3 terminates.
Other events
50mph speed limit begins
40mph speed limit begins
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.
Have you seen...
Major incidents
What happens when there's a big accident on a trunk route? Who picks up the pieces, and why does it take so long?
About this page
Published
Last updated
Published
Last updated
