Abstract: A method for the state-based maintenance of a coupling arrangement of a track-bound vehicle includes the steps of: providing coupling arrangement data and surroundings data; transmitting the coupling arrangement data and/or the surroundings data to a data processing system and determining a target specification for a maintenance requirement of the coupling arrangement as a function of the coupling arrangement data and the surroundings data; recording images of the coupling arrangement for optical reproduction of an actual state and transmission to the data processing system; and evaluating an optical actual state of the coupling arrangement from the images taking account of the target specification, which is formed from the operating data and the state data, for the maintenance requirement at an evaluation time and taking the evaluating as a basis for correcting the target specification.