Route
Junction number
M42 J7A
Markerpost
12.4 km
Name
South Birmingham Joint
Type
Terminus
Not a terminus
Other routes
M42
Authority
Restricted turns
Some turns restricted
Services
No services
M6 Toll (M42 J7A) South Birmingham Joint
Lane configuration
- Lane 1 is gained from the entry sliproad.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 4 continues ahead.
- Lane 1 exits and does not return.
- Lane 2 exits and does not return.
- Lane 3 continues ahead.
- Lane 4 splits to create a new lane.
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...
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
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Last updated
Published
Last updated
