NASA NTRS · 19730000157
An inexpensive vehicle speed detector
Abstract
Low-power minicomputer can plug into automobile cigarette lighter. It measures time it takes observed car to travel premeasured distance and provides immediate readout of speed. Potentially, detector could be manufactured for less than $200 per unit and would have very low maintenance cost.
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Broussard, P., Jr.. 1973-05-01. An inexpensive vehicle speed detector. https://ntrs.nasa.gov/citations/19730000157
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