Method for monitoring at least one system parameter which influences the operating behaviour of vehicles or trains of vehicles

A method for monitoring at least one system parameter which influences an operating property of vehicles, the method comprising:

• acquiring operating data during operation of a real vehicle, the operating data being measured using at least one sensor;
• determining real vehicle behavior based on the operating data of the vehicle;
• comparing the real vehicle behavior with theoretical vehicle behavior determined using an original theoretical model;
• and
• monitoring the at least one system parameter if the theoretical vehicle behavior corresponds to the real vehicle behavior,
• wherein, if the at least one system parameter value lies outside a predefined parameter value range, the original theoretical model is adapted to adapt the original theoretical model to provide an adapted theoretical model until the theoretical vehicle behavior corresponds to the real vehicle,
• wherein the method further comprises generating and outputting at least one of a fault message and instructions for the vehicle driver via a vehicle driver interface and initiating at least one countermeasure, and
• wherein the method further comprises, if a deviation between the at least one system parameter acquired with the original theoretical model and the at least one system parameter acquired with the adapted theoretical model lies within a predefined deviation value range, the at least one system parameter acquired with the adapted theoretical model is monitored but no fault message, or instructions are generated until the deviation value no longer lies within the predefined deviation value range.