Oh cmon, speeding is not causing any problems? I have been passed by others on the highway that are doing well over 160 -180 km/h!! Then you see them diagonally change lanes without signalling, and zig-zagging in and out of the lanes cutting off everyone in their way.
Where I live (Canada), if you get caught speeding (I think over 50Km/h) they impound your vehicle and your driver's license on the spot. The law is very strict.
I think it would be a great idea. Maybe scaring the speeder would cause him/her to rethink how they drive!!
I don't see it being illegal since you can buy a sports radar gun for a few hundred dollars.
Maybe I am wrong?
I live in Ontario, Canada where the "speeding over the posted limit by 50km/hr" results in an immediate 7 day roadside suspension, impound of vehicle (a bit of a problem when it's a rental car, your mothers car etc) and a $10,000 fine. As far as the use of a 10.525ghz transmitter, while the device might be legal, if the power is kept below certain limits, any device that is used for the purposes of a nusance can result in criminal and/or civil prosecution. If you took a Radio Sh*ck 65$ speed gun onto the highway and started to disrupt traffic by pointing it at vehicles who may have radar detectors on board, regardless of whether these detectors are legal or not, you would likely be prosecuted. Whether you got off or not is really n ot the question. The cost in in defense of the action.
The fact that my wife's Infinity has a radar proximity detector built into her car cruise control to apply the brake when the car gets within a certain distance from the vehicle ahead would also trigger a radar detector and might 'trigger' a driver to apply his/her brakes in a way that could result in a car accident doesn't present any legal liability for her. The driver who applied the brakes could be exposed to liability by virtue of using an illegal detector that ultimately resulted in an accident, if he/she was crazy enough to admit this but she's fine because she is using her vehicle, as designed.
When I was in university, I had one of those "radar detector testers", about the size of a garage door opener and consisting of a small, microwave oscillator powered by a 9volt battery. I remember 'using' a Porsche that had a radar detector as MY virtual radar detector by keeping his car within sight as we drove across New York State. When ever he detected a radar threat, his tail lights would come on and I'd slow down. WHen he started getting cocky, he'd speed up and as he moved out of sight, I'd reel him back in with the Radar Zapper (tester as it was officially sold). Not something I'd do now, knowing what I do about liability and risk but was something I did do many years ago!
Most jurisdictions still use X and K or Ka band radar on their moving vehicles and virtually all are equiped with "radar detector detectors" which would react negatively to the "Radar Tester" since it emits microwave radiation that the police would detect. If powerful enough to interfer with their system, even if below the FCC or DOC limits for unlicenced transmitters, they'd still be illegal since they must never interfer with other legal users of the band. You can introduce dopper shifts in the 10.525ghz signal sent out by the police radar gun that would overpower the police unit and force the device to display the speed (as derived by the doppler shift given to the external radar source) to the desired speed. These devices typically have a 30mph and 55mph doppler settings (or if metric, kph) to choose from. The police know that something is wrong when a clearly speeding vehicle registers 30mph! Always important to make sure the device was set to the 'correct' speed!
Oh, back to the days of recreational electronics!
Doug