A process for determining travel through at least one toll road section by at least one vehicle (FAR) by means of a position determination system (POS) which is set up to determine the current position of the at least one vehicle (FAR), whereby positions of the at least one vehicle (FAR) are compared with the position of at least one reference point characteristic for an entrance (AUF) to a toll road section, whereby the orientation (ORI) of the vehicle is determined within a specifiable region (BER) about the entrance (AUF), whereby it is determined whether the orientation (ORI) determined agrees within a specifiable tolerance range with the orientation (ORA) characteristic of entry onto the toll road section.