Originally Posted by
cardiff55
You have to be very careful there. I was caught Westbound about 2 years ago, and went on a motorway awareness course, which was more expensive then paying the fine! As you get on the M4 Westbound just after the tunnels, the gantry there has them, and one of the ones coming down the hill east of the tunnel. Eastbound I think there is one just before the tunnels and one just after. You have to be very careful with those variable speed limit signs, one lapse of concentration and you get a ticket.