Control vehicle for a road toll system
AssigneeKapsch TrafficCom AG
InventorsHarald Hanisch, Robert Povolny, Oliver Nagy
Life of this patent
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Abstract
A control vehicle for a road toll system on the basis of vehicle-mounted onboard units which can be polled via DSRC radio communications, with the control vehicle comprising at least one DSRC transceiver with at least two antenna systems, which are distributed with a mutual distance over the longitudinal direction of the control vehicle, for polling a passing on-board unit.
Claims15
A control vehicle for a road toll system comprising:
- at least one Dedicated Short Range Communications (DSRC) transceiver with at least two antenna systems, wherein the antenna systems are arranged at the front and rear ends of the control vehicle and have omnidirectional characteristics or partially overlapping directional characteristics, to set up an uninterrupted radio communication for polling a passing on-board unit, wherein the at least one DSRC transceiver is configured to initiate the radio communication with said on-board unit via an antenna system mounted forward with respect to the direction of travel of the control vehicle and to continue the radio communication via at least one antenna system mounted backward with respect to the direction of travel of the control vehicle.
The control vehicle according to claim L further comprising means of writing a control information into the on-board unit at the end of the polling with a timestamp indicating its period of validity.
Dependencies are inferred from the claim text.