Apparatus for personalization and registration of vehicle devices of different types in a road toll system, comprising: for each type of vehicle device, a respective personalization module that is configured to write personalization data into a vehicle device of this type and generate the associated registration data, which contains the personalization data, an interface module common to all personalization modules that is configured to receive their registration data and, following a release request, send it to a registration database of the road toll system, and a testing unit that reads out the personalization data of a personalized but not yet registered vehicle device, checks the registration data generated by the responsible personalization module for agreement of the personalization data contained therein with the read-out personalization data, and if it agrees, sends a release request with respect to this registration data to the interface module.