If your radar detector is going off every few minutes in traffic, the problem almost certainly isn't police radar. It's the cars around you. Here's what's actually happening — and...

A radar detector listens for the same radio signals police radar guns emit — and alerts you the moment it detects one. That's the core of it. But understanding how...

Short answer: yes — in 48 out of 50 states. But the exceptions matter, and there are a few situations where even legal states have extra rules. Here's everything you...