Route
Junction number
6
Markerpost
39.5 km
Name
The Clock Interchange
Type
Non-standard interchange
Terminus
Not a terminus
Other routes
A1000, B197, B656
Authority
Restricted turns
Full access
Services
No services
A1(M) J6 The Clock Interchange
Layout and signage
|
Welwyn Welwyn Garden City A1000 |
B656 B197 |
|
B197 A1000 |
Welwyn Welwyn Garden City A1000 |
Lane configuration
- Lane 1 exits and does not return.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 1 has option to exit and splits to create a new lane.
- Lane 2 continues ahead.
What's new
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.
Hello, here's my ridiculous side project
An introduction to what I write, and why I write it, and where my strange new road sign simulator fits in to all this.
Have you seen...
Aust to Beachley
Today two motorways cross the Severn near Chepstow. But as recently as 1965, the only crossing was a ferry that carried six cars at a time, from Aust to Beachley.
About this page
Published
Last updated
Published
Last updated
