Green sign next to the blue/red ones in Europe, it's supposed to let you buy a map in any country and use it all through europe. Try it in the UK and you'd be stuffed, but that's verging on politics.
Another M-62 fact: It's the highest motorway in England.
Yet another M-62 fact: There is a farm in between the carriageways. The farmer in the '60's had a manor house charter signed by King John in 12-something. This beat the compulsory purchase order, so the motorway could only go on his land, not through his house. They put the motorways as close to his front and back doors as they were allowed, but had to build him tunnels for access etc. A bit of a victory for the little guy.
I'm sad I know

Andy