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M1 - A421 - A507

Ridgmont Interchange

Routes

A421

A507

Region

East of England

What's new

Devon help us

Road signs are colour coded for different types of road, but in Devon there are more colours than anywhere else. What do Devon's colourful signs mean?

Twenty Years

It's our 20th birthday! Join us as we celebrate with the return of a much-missed feature.

A walk on the M621

Fancy a stroll? In 1972, the City of Leeds was about to open its new South East Urban Motorway and proudly showed off the achievement with a "walkabout" event.

Have you seen...

West Cross Route

Desperately-needed but never built, this was one of the only London urban motorway plans that were ever progressed to the construction stage.