There is a way we could combat this type of stuff but it's costly. Just send out a few cars with those computers which monitor track trailer speeds. They record like the last 30 minutes or what ever of the trucks speed. I bet they have something cheaper for cars. If you had computer proof of your speed for the last 30 minutes what could the police person say? Umm my radar must of goofed? ummm the curves made you look like you were driving fast.
If there were just a few cars equipmented the "speed traps" could be occasionally checked. WOuld make them think twice about pulling someone over for quota.