The car running ahead is referred to as a rabbit. He is used to draw the LEO's LIDAR or radar shot so you get a warning. Speeding alone is not a smart thing to do nowadays.Good points. A radar detector can't help you if you're the only one out on the road. If there are no other cars out in front of you that a cop can use a radar on, you're next up. And there is no warning at all.
As mentioned, you have to shut it down right away when it goes off.
You still have to ride/drive smart if you have a radar detector.
And no, with the right kind of detector you do not need to shut down when you detect a signal. With my V1 I know where the LEO is. If he is behind me and the signal is getting weaker I just keep going.