Facts for Prelims (FFP)
Source: TH
Context: The Consumer Affairs Ministry has proposed new rules for radar speed guns used to measure vehicle speeds on roads.
According to the draft rules, radar equipment installed after the finalization of the rules must be verified and stamped within one year. Existing equipment should also undergo verification whenever re-verification is due. Conditions are outlined for the use of speed measurement results in legal proceedings.
About Doppler radar:
It utilizes the Doppler effect to collect velocity data. The Doppler effect, proposed by Johann Christian Doppler in 1842, describes the change in wave frequency when there’s relative motion between a wave source and its observer. This phenomenon is observed in sound waves and electromagnetic waves. Doppler radar finds applications in astrophysics and vehicle speed monitoring by law enforcement.
