I think SPECS cameras are possibly the hardest to see (no stripes etc) and also the most difficult to trick, since they work on average speed - however, they're definitely visible during the day. I've also heard of a possible way of tricking them: just drive through them on different lanes :D
Well, the ANPR cameras in use on the motorways for traffic flow monitoring have always been based on site (group of cameras), rather than individual cameras. I remember that much from my work on the travel time road signs. I'd be surprised if the SPECS cameras didn't use the same technology.
We noticed our first set of SPECS cameras recently on the A1 near the Angel of the North, apparently they've been installed to enforce a 40MPH limit through a contraflow that will be in operation while a bridge is rebuilt, there's no mention if the cameras will stay once the roadworks are complete. Personally I'd like to see them reused between junctions 62 and 63; it's a 5 mile stretch with no exits and routinely has people doing a ton. Maybe it's just me, but I hate speeders. |
