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(ËreÉª dÉr) n. 1. a device or system for determining the presence and location of an object by measuring the direction and timing of radio waves. 2. a means of awareness; perception: lobbyists working under the media's radar.
A radar detector is an electronic device used by motorists to detect if their speed is being monitored by police or law enforcement using a radar gun. 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 â 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.