I gotta say, if these are the loop detectors or whatever, then i havnt got a problem with them. The ones in Vic on the Hume on the way into melbourne actually work because you have to slow down, so i dont see it as revenue raising. If you know they are there, you will slow down for that large section of road and their mission is accomplished. If it is a single one that you dont even know about and dont slow down, then it would be revenue raising.