Route
Junction number
2
Markerpost
Unknown
Name
Carn Interchange
Terminus
Terminus at end of exit list
Other routes
A3, B2
Authority
Restricted turns
Full access
Services
No services
M12 (NI) J2 Carn Interchange
Layout and signage
| N/A | B2 |
|
B2 |
Carn Seagoe B2 Craigavon Centre Portadown Armagh (A3) |
Lane configuration
- Lane 1 has option to exit and splits to create a new lane.
- Lane 1 continues, with option to exit.
- Lane 2 terminates.
Other events
Start of motorway regulations
End of motorway regulations
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...
Low Emission Zone
A first step towards emissions-based road pricing, a pointless measure to enforce something that's happening anyway, or another leap forward in traffic planning from the people who created the Congestion Charge? It's hard to say.
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