There are times, due to traffic conditions, that the closest vehicle is not returning the strongest signal.”Įvidence of the potential size of this error appeared in Car and Driver (October, 1979). Texas instructors warn, “It is a widely-held misconception that the reflected target signal received by the radar antenna will always be that of the closest vehicle to the antenna. This error is all the more insidious because poorly-trained operators assume it can’t happen. This is caused by the radar looking past a small reflection in the foreground to read a larger reflection behind. If the antenna is not properly positioned, it may seem to clock an approaching car when, in fact, it’s clocking another car in the background.Įven if the operator aims his antenna properly, radar is still subject to “look-past” error. The radar beam travels in a straight line, neither bending around curves nor following the contour of hilly terrain. Here are the radar “errors” detailed by the Texas manual: 1. ![]() The radar operator must be familiar with situations that can produce ‘error’ readings.” If the operator does not detect the error, a ticket will be wrongfully issued. ![]() Anytime a reading appears, the radar has sensed a signal. It cautions operators, “…the radar does not generate ‘false’ readings. The Texas Department of Public Safety produced a comprehensive manual based on the Federal tests. These are common errors encountered in operating Police radar.
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