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M40 at 50 10 July 2017

The M40 has just turned 50. Here are five things you might not know about the London to Birmingham motorway.

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M40

Fifteen Years 03 September 2016

In August 2016, CBRD turned 15 years old. Join us for a tour of the last 15 years, looking at what's changed on the UK road network and what we've learned.

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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.

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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?