METHOD AND ON-BOARD UNIT FOR SIGNALING TOLL TRANSACTIONS IN A ROAD TOLL SYSTEM
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United States of America Patent
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Jun 6, 2013
app pub date -
Nov 26, 2012
filing date -
Dec 5, 2011
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Abstract
A method and an on-board unit for signaling toll transactions in a road toll system with geographically distributed radio beacons, carrying out toll transactions with passing on-board units of vehicles. In the on-board unit, it is verified in the course of a toll transaction between an on-board unit and a radio beacon whether a toll transaction dates back longer than a given time span, and if so, an acoustic signal is emitted by the on-board unit, and if not, no acoustic signal is emitted by the on-board unit.
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