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Hybrid GNSS/DSRC on-board units

The CEN DSRC / GNSS hybrid on-board units (OBUs) are the in-vehicle parts of the Kapsch TrafficCom Satellite Tolling system that is designed to facilitate distance based road charging schemes.

The latest GNSS and GSM technology is combined into one compact unit that also contains a DSRC-interface according to the CEN DSRC/EFC standards. This enables migration from, and interoperability with, existing DSRC based charging systems. The DSRC interface can also be used to communicate with the vehicle from mobile or fixed compliance checking facilities.

The distance based charging application is based on the concept where GNSS-positions are collected and transferred to a host system via a GPRS communication link and where the actual charging transaction is performed in the central system. This concept allows for very flexible tariff and road segment schemes since no large amount of map data or algorithms needs to be downloaded to the on-board unit.