On one extreme, you have Laser Jammers which are always on and ready to react and block instantly. No doubt Active! On the other end you have a license plate spray or cover that just sits on the plate, not reacting to any input. No doubt Passive. But then there are other CMs that fall in the middle or might be harder to classify. The license plate frames like noPhoto that detects a light flash and returns one of it own - While most plate CMs are passive, this one I'd call Active. Radar Detector - while not quite as "Active" as a laser jammer, it's always scanning and when it detects, it reacts by alerting - Active. Police Scanner - I would lean toward Active. It provides information to the user who can then make a decision or change based on the input. Dash cam - this is a hard one. It's always on and recording but does it help prevent you from getting pulled over? No. Prevent you from getting a ticket? Perhaps. You may get lucky and be able to present video footage able to convince an officer or judge that you are not guilty. Call it a mildly Active CM? You get my point. So, on to Waze. In my view, Waze is continuously "scanning" the roadway in front of you so to speak (via other wazers), providing you information and data, which you can then use to make a decision or change. I'd call this Active. Not as active as a detector or jammer but certainly not passive in MHO. Thoughts?