M48

M48

Olveston to Caldicot

The M48 crosses the River Severn alongside the M4 on the original Severn Bridge, carrying local and commuter traffic and forming a diversion route in the event that the Second Severn Crossing is closed.

Routes
M48

M4 in Wales

One man's account of the building of the M4 through Wales, seen as he grew up in Swansea and witnessed it stage by stage - a tour of the motorway from its construction to the present day.

Routes
Histories

What's new

A century of motorways

It's 100 years since the opening of the world's first motorway, the Autostrada from Milan to the Lakes.

Schrödinger’s speed limit

In 2022, Manchester City Council say they reduced the speed limit on the Mancunian Way to 30mph. But it’s not clear if they did. It’s not even clear if they can.

Sorry, wrong number

Road numbering is a system with clear rules. What happens when the people responsible for numbering roads don't follow them?

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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?