Most of the people driving in the US use radar detectors to keep track of their speeds. They want to monitor it before getting ticketed by highway patrollers.

Anyway, what is a radar detector? According to Mr. Wiki, a radar detector is a passive electronic device used by motorists to detect if their speed is being monitored by aradar unit. Most radar detectors are used so the driver can reduce the car’s speed before being ticketed for speeding. Only doppler radar-based devices can be detected — other speed measuring devices including those using ANPR, piezo sensors, and VASCAR technology cannot be detected. LIDAR devices require a different type of sensor, although many modern detectors include LIDAR sensors. Most of today’s radar detectors detect signals across a variety of wavelength bands: usually X, K, and Ka. In Europe the Ku band is common as well.

Most drivers who buy radar detectors make sure they have the best ones from the market. They couldn’t take chance on cheap ones least they get busted by authorities especially if they are travelling on a business trip. So, using the best radar detector means getting the job done without delay!