This is a dumb question I think but starting to make me wonder. I live in a big suburb of Dallas TX. Here it seems that every squad I run into has radar however my radar never goes off. I went to the neighboring city and saw an officer shooting radar. (It appeard he was) He was in the parking lot facing oncoming traffic and not shooting laser. I past by him numerous times and then just sat in the adjacent parking lot and nothing. I don't get it. I ran across 3 other squads in the same city and nothing. So total today of all these officers I have come across none of them seem to be using radar or who knows? ( I just didn't get anything) My other question is if an officer is on a traffic stop and has the vehicle speed locked in will the radar stop transmitting? I have passed many DPS officers on traffic and as I come up on them I don't get anything. So, I am just assuming they have the violators speed locked and so I don't pick up anything.