A4

A national system of road numbers radiating from a central point suggests there is… well, a central point. But if you go looking for it you’ll find it doesn’t exist.

It has viaducts, a tunnel and plenty of controversy, but the amazing Batheaston Bypass doesn’t really work. What went wrong?

Serving Reading, Bristol and South Wales, the A4 and M4 are one of London's most important approaches. But the wildest fantasies of the sixties couldn't overcome its trickier problems.

A new set of Ringways pages are now online, looking at unbuilt motorways and road projects west of London.

It makes the traffic situation in one part of West London much more bearable but it should have been removed more than quarter of a century ago. It's amazing what you can do with a big Meccano kit.