Route
Junction number
32
Markerpost
245.2 km
Name
Coryton Interchange
Terminus
Not a terminus
Other routes
A470, A4054
Authority
Restricted turns
Full access
Services
No services
M4 J32 Coryton Interchange
Layout and signage
|
Caerdydd (G) Cardiff (N) Merthyr Tudful Merthyr Tydfil A470 |
A4054 A470 |
|
A470 A4054 |
Caerdydd (G) Cardiff (N) Merthyr Tudful Merthyr Tydfil A470 |
Lane configuration
- Lane 1 exits and returns after the junction.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
- Lane 1 exits and returns after the junction.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
What's new
The road that made no sense
It was the UK's only single-carriageway motorway, and twenty years ago it ceased to exist. This is the story of the strange fascination it held, and of my place in history.
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.
Have you seen...
The Magic Roundabout
Officially the seventh most frightening thing on the road network - but actually it might just be the most efficient junction ever designed.
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