I'm curious what the point of having those raders? I always hear bout it
They are designed for early warning of cops shooting radar and ticketing speeders during traffic patrol. They really are not as effective as they used to be since most PDs are using laser, which is much harder to detect due to the narrower, focused beam. The system above does detect laser, but you'll be virtually on top of the cop before it detects it. Notice how cops look through a viewfinder when they are shooting at traffic from the side of the road? They have to direct the laser at the car they are targeting to get an accurate "bounce back". Before, they used like K-band or something which floods the road with radar waves and the cop would pretty much guess which car was speeding in a group of cars. This flooding also made it easier to detect from a distance, especially over hills.