I do a lot of motorway driving for my job, and at the moment it seems that the Highways Agency are trying to set a world record for the amount of miles of motorway they can cone off for roadworks - it's not even funny. Anyway, every time there is roadworks on a motorway these days they put up these average speed check cameras to enforce a 50mph limit, which the vast majority of people observe. However, I do see a lot of people (usually driving Audis or BMWs I must add) blatantly ignoring the 50mph limit and hooning along through the roadworks.
Are these people too thick to grasp the concept of 'average' speed, or do they perhaps know something I don't? Has anybody on here every been caught out by these cameras?