Re:Sensors in the roads... (Score 2, Insightful)

Very true. Often it's ten over. I've been in bumper to bumper traffic, in a narrow-lane construction zone, in 15 over traffic. Michigan highways are crazy. Situations like these would certainly prevent this technology from being used for blanket-ticketing. However, it would likely be trivial to determine the *actual* speed of traffic on a given route, and thus ticket those who are 10 over the average speed. So this sort of technology might actually be useful for enforcing speed limits in a sensible way, by only ticketing those who are driving significantly faster than the rest of traffic.