Route
Junction number
18
Markerpost
112.6 km
Name
Chorleywood Interchange
Type
Non-standard interchange
Terminus
Not a terminus
Other routes
A404
Authority
Restricted turns
Full access
Services
No services
M25 J18 Chorleywood Interchange
Layout and signage
|
Rickmansworth Chorleywood Amersham A404 |
A404 | 
|
A404 |
Chorleywood Amersham A404 |
Lane configuration
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 4 continues ahead.
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 4 continues ahead.
Other events
Variable Speed Limits apply
- Variable Speed Limits apply
What's new
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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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Abbreviations
How do you describe a road? One way is to use these engineering abbreviations, much loved by the UK's community of road enthusiasts.
About this page
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Last updated
Published
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