This is fairly common in the UK where average speed checks can be found on motorways. The camera systems I have seen were the SPECS speed camera [1]. [1] http:

This is fairly common in the UK where average speed checks can be found on motorways. The camera systems I have seen were the SPECS speed camera [1]. [1] http://en.wikipedia.org/wiki/SPECS_%28speed_camera%29 http://en.wikipedia.org/wiki/SPECS_%28speed_camera%29