Twists and turns in the Taff Valley
Built in the 1970s, the A470's high speed expressway down the Taff Valley to Cardiff swings you around endless corners as it finds its way through towns, villages, steep wooded hillsides, railways, rivers and bridges.
This video was filmed on 20 June 2009. The A470 hasn't changed dramatically since then, but fifteen years ago it did still have some of its original seventies features - most noticeably all those huge streetlights painted pastel green.
Our guide to the A470 is in the Motorway Database.
Map extract from OS Opendata 1:250,000 Scale Colour Raster under the Open Government Licence 3.0.
What's new
The Ringways Map is here
The wait is over! The full map of the Ringways, London’s unbuilt urban motorway network, is now online. Not even the system's planners had anything like this.
Red, white and blue
Kent County Council is run by eurosceptic nationalists. So why are they putting EU flags on their road signs?
The sunlit uplands
On Saturday 31 May something historic happened. The Heads of the Valleys Road was finally complete.
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Major incidents
What happens when there's a big accident on a trunk route? Who picks up the pieces, and why does it take so long?
