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Active-infrared overhead vehicle sensor

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4 Author(s)
Olson, Robert A. ; Schwartz Electro-Opt. Inc., Orlando, FL, USA ; Gustavson, R.L. ; Wangler, R.J. ; McConnell, R.E., II

An active-infrared overhead vehicle sensor capable of detecting vehicle (moving or stationary) presence, classifying type of vehicle, and measuring vehicle speed is described. The results of tests conducted at a street intersection in Orange County, Florida are presented. The test results demonstrate that the sensor reliably (99.4%) detects vehicles including cars, trucks, buses, and motorcycles and measures their speed to within ±1 mi/h (1.6 km/h) at speeds up to at least 50 mi/h (80 km/h)

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Vehicular Technology, IEEE Transactions on  (Volume:43 ,  Issue: 1 )