five years
It is not a requirement to show RADAR readings in Illinois.
no
With correct application, traffic radar reads true speed or lower than true speed virtually 100% of the time.
Generally no, but if used around any naval base or military aircraft facility you run the risk if their radar systems causing major damage to your equipment due to the strength of their systems.
No the law even says they do not have to show you the gun what so ever.
everytime that it is turned on
No, not on the scene. But if you go to court the officer will have to present certification as to their training to operate it, and the fact that was"calibrated."
Depends on the manufacturer's specifications.
A radar that the police use to detect stuff.
A radar that the police use to detect stuff.
All they have to prove is that it was within manufacturer's specifications and calibrated properly, so when stopped by police, they don't need to show you the radar gun, when you ask to see it. An officer does not, and more than likely, will not show you what speed you were going on there radar. That issue would come up in court.
No. With police officers in motion, it would appear that cars would be going slower. Say that a car is going 50 MPH, and you are going 45 MPH. Eventually the vehicle wil be ahead of you. Now say you are a police officer with radar. If you test this car, it will appear (on radar) that the 50 MPH car is only going 5 MPH, thus to get the accurate speed, you must be going 0 MPH.Disagree. The original police radar required a stationary unit. Radar is use for the past 30 years is capabable of adding or deducting the speed of the police car from the observed speed. It does not require that the police car be in one fixed spot.Added: The second cotributor is correct. I seriously doubt that any of the old radar units are still in operation much less certifiable as accurate. ALSO: the term "radar" is a commonly used by the the public to describe ALL police speed-clocking devices. Any of these can be calibrated to be used while the vehicles are in motion.
There is a device called a radar detector, but it will only detect a radar signal, not police in general.
i don't the answer
It is not a requirement to show RADAR readings in Illinois.
Having a radar detector will alert you when a Police Car with its speed radar is near. The Radar Detectors will produce an audible signal alerting you of this, and will do so far in advance of when you are able to see the Police Car.
The answer, both technologically and legally, is "No". Most modern in-car Police radar systems can work while the vehicle is moving.