An example of a view on EETS trust and privacy in GNSS based toll systems

The aim of the EETS, the European Electronic Toll Service, is to allow the user of a vehicle to conclude one service contract and use one OBE for circulating a vehicle within all the electronic toll domains in Europe. Within the EETS a toll charger has to accept vehicles with onboard equipment (OBE) from a third party, the EETS provider, and to utilise toll declarations received from this provider. This paper discusses measures that can provide, on the one hand, the toll charger with a sufficient level of trust in the correctness of the toll declarations from an EETS provider while on the other hand protecting the privacy of the user.