Vehicle Speed Meters Validation and Verification System

摘要

Checking the speed of vehicles on the public road is used as main car accident preventive measure in all countries. These measurements and ticketing are done by the police only. Therefore the various different types of speed meters (radars, lidars, video cameras and others) are used for the purpose [1-4]: handheld speed meters, stationary speed meters, mobile speed meters working in patrol mode, etc. The measurement error of all speed meter used today for traffic control in Lithuania is from 1 km/h to 3 km/h (while speed is below or equal to 100 km/h) [5]. Because of this field of measurements falling within legal metrology scope and therefore being under approval (assessment) body control, all measurement means used in traffic speed check have to pass metrological control and maintenance procedures, which include validation and annual verification. In other words, the police officer can ticket the driver for speeding when the measurements are taken with the approved and verified meter, which maximum permissible error is controlled periodically, only.