Route
Junction number
22
Markerpost
195.5 km
Name
Pilning Interchange
Terminus
Not a terminus
Other routes
M49
Authority
Restricted turns
Full access
Services
No services
M4 J22 Pilning Interchange
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...
To the Limit
Speed limits are more emotive and divisive than almost anything else about the road network. How do you sort the fact from the opinion? And how did we end up with the speed limits we have?
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Published
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