Back in 1966, Arthur Marshall devised a groundbreaking tool for measuring vehicle speed over a stretch of road. Known as the Visual Average Speed Computer And Recorder, or VASCAR, it allowed officers to calculate a driver’s speed without relying on radar.
Decades later, the technique is enjoying a resurgence among law enforcement. Because VASCAR does not emit a signal, radar detectors are useless against it, making the old-school method a quietly effective tool for catching speeders off guard.
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