At some automobile toll booths, a thin metal wire protrudes from the road, making contact with cars

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At some automobile toll booths, a thin metal wire protrudes from the road, making contact with cars before they reach the toll collector. What is the purpose of this wire?

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Probability and Random Processes With Applications to Signal Processing and Communications

ISBN: 978-0123869814

2nd edition

Authors: Scott Miller, Donald Childers

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Question Posted: Aug 18, 2017 02:27 PM

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At some automobile toll booths, a thin metal wire protrudes from the road, making contact with cars

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Probability and Random Processes With Applications to Signal Processing and Communications

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