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.
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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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