VASCAR
From Wikipedia, the free encyclopedia
VASCAR (Visual Average Speed Computer And Recorder) is a technology for determining the speed of a moving vehicle. It is used by police officers to catch speeders, mainly in jurisductions where RADAR and/or LIDAR are illegal, or to prevent detection by those with radar detectors. A VASCAR unit couples a stopwatch with a simple computer. Speed calculation is done by dividing the distance between two markers by the time the target vehicle takes to travel between the markers.