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Speed Measuring Device Performance Specifications: Across-the-Road Radar Module



A G. Lieberman


These specifications describe performance requirements and test methods for stationary, automated across-the-road radar speed measuring devices used by law enforcement agencies for enforcing vehicle speed regulations. These specifications apply to radar speed measuring devices that transmit an unmodulated continuous wave (CW) microwave beam across the roadway, monitor the signals reflected from the moving vehicles crossing the microwave beam, process the Doppler shifts of the reflected signals for the vehicle speeds, and may automatically record images of those vehicles which exceed a preset speed.
NIST Interagency/Internal Report (NISTIR) - IR 7113
Report Number
IR 7113


across-the-road radar, automated speed enforcement, electromagnetic interference, methods of test, performance specifications, photoradar, speed accuracy


Lieberman, A. (2008), Speed Measuring Device Performance Specifications: Across-the-Road Radar Module, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD (Accessed April 22, 2024)
Created October 16, 2008