Abstract: A method for determining a characteristic of at least one position parameter, in particular of a disruption in the position parameter, of a track for a vehicle, in which detection values of at least one detection parameter affected by the position parameter are detected on a vehicle driving along a section of the track, and wherein the at least one position parameter for the track section is determined from the detection values. The current value of the position parameter is determined from the detection values as a function of the model data of a previously determined vehicle model of the vehicle, wherein a relationship between the position parameter and the at least one detection parameter affected by the position parameter is generated by way of the vehicle model.