Computer system for assisting in coupling and uncoupling a semi-trailer to a tractor vehicle, method and vehicle comprising such a computer system

A computer-implemented method, for assisting in coupling or uncoupling a semi-trailer to a tractor vehicle, comprising:

• using information provided by at least one sensor to automatically check, by a processing circuitry of a computer system, whether a plurality of elements of the semi-trailer and the tractor vehicle are in a first safe position, in a second safe position or in a third position;
• enabling a tractor vehicle parking brake to be released if all the elements are in the first safe position or if all the elements are in the second safe position by the processing circuitry;
• and
• locking the tractor vehicle parking brake in an engaged position by the processing circuitry if at least one of the elements is in a different position than the others or in the third position;
• selecting, by the processing circuitry of the computer system, one mode between a coupling mode and an uncoupling mode;
• and
• continuously monitoring, by the processing circuitry of the computer system, information provided by the at least one sensor in order to detect any change of position and as result to deduce that a coupling or uncoupling sequence has been initiated and select the same.