Route
Junction number
None
Markerpost
Unknown
Name
Clockhouse Junction
Type
Crossroads
Terminus
Not a terminus
Other routes
A105
Authority
Restricted turns
Full access
Services
No services
A406 Clockhouse Junction
Layout and signage
|
Palmers Green Wood Green Hornsey A105 |
A105 | 
|
A105 |
Palmers Green Wood Green Hornsey A105 |
Lane configuration
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 3 continues, with option to exit.
- Then further along:
- Lane 1 continues ahead.
- Lane 2 continues ahead.
- Lane 3 terminates.
- Lane 1 continues ahead.
- Lane 2 splits to create a new lane.
- Then further along:
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 3 continues, with option to exit.
Other events
Traffic signals
30mph speed limit begins
- Traffic signals
40mph speed limit begins
What's new
The monster seen from below
What might it have been like to stand in one spot and witness the arrival, and the uncertainty, of plans for an urban motorway in West London?
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.
Have you seen...
Harry Yeadon
A civil engineer, working principally in the North West of England, responsible for many of the area's motorways.
About this page
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Published
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