The M50 - a drive into the past

A trip to South Wales with a friend at the weekend saw part of the journey undertaken on the M50 motorway, or Ross Spur as it is sometimes known, and as a passenger I was able to appreciate the unique character of this odd little road. While many readers would probably consider roads in general to be boring and motorways especially so, the M50 is actually rather interesting, despite being a mere 21 miles long with only four junctions. Being one of Britain's oldest motorways but lightly used and little modified since it was built, it is probably as close as it is possible to get to an authentic 1960s motorway travel experience, and one of those four junctions is also rather remarkable.

Unlucky 13 - the M1 junction's weirdness explained

As a frequent traveller to Bedford via Milton Keynes and the A421, I have often wondered why this road suddenly and inconveniently veers south-east and travels alongside the M1 motorway for a couple of miles before meeting it at junction 13, and then goes north again on the other side, adding several unnecessary miles to the journey. Having discovered that junction 13 itself in its original form featured in road enthusiasts' website CBRD's list of bad junctions, piecing together the various reader comments solved the mystery of the bigger picture and why the entire road layout in that area is a bit strange, so here is the explanation.

Why does the A421 go down to the motorway junction and back up the other side? Read on to find out...