Patent ID: 8754781

Claim:
A control method for a road toll system that is based on on-board units carried by vehicles having vehicle license plate numbers, using at least one recording vehicle and at least one control vehicle that have unique identifiers and are connected to a switching server via a cellular mobile communication network, the method comprising: registering an identifier of a recording vehicle and a current mobile communication network cell identifier thereof in the switching server; selecting a cell identifier in a control vehicle and transmitting the selected cell identifier and the identifier of the control vehicle to the switching server; associating the control vehicle identifier with the recording vehicle identifier for which a cell identifier that is identical to the selected cell identifier is registered; detecting a traffic or toll violation of an on-board unit or of a vehicle carrying the same and reading the vehicle license plate number thereof by the recording vehicle; transmitting a violation data record, containing the read license plate number and the recording vehicle identifier, to the switching server, determining the assigned control vehicle identifier, and transmitting the violation data record to the control vehicle identified by the determined identifier; and reading the license plate number of a passing vehicle by means of the control vehicle, comparing the read license plate number to the license plate number contained in the violation data record, and outputting an alert message if the license plate numbers agree with each other.