it's very simple. they pick a stationary object, when you blast by that stationary object, they can count till you hit the next stationary object. With a trained eye, it is not as hard as it sounds. Are they going to pinpoint you like a radar gun? of course not, but they will be in the ballpark.
btw, studies have shown that people that use radar detectors (myself included) tend to be more aware of their environment. You are always waiting for the thing to go off. I have an Escort unit. Use it all the time whether I'm in the minivan or mach1.
btw, studies have shown that people that use radar detectors (myself included) tend to be more aware of their environment. You are always waiting for the thing to go off. I have an Escort unit. Use it all the time whether I'm in the minivan or mach1.