SYSTEM FOR HOLDING AND STORING DISCONNECTED LINES

System for holding and storing disconnected lines of a tractor unit, each line comprising, at one end, a coupling configured to be coupled to a complementary coupling of a trailer so as to pneumatically or electrically connect the trailer to the tractor unit, the system for holding and storing comprising a first retaining mechanism comprising a bracket designed to be fixed on a rear wall of the tractor unit and at least one spring having a first extremity attached to the bracket and a second extremity on which at least one of the lines can be hung; and a second retaining mechanism for receiving and holding the couplings arranged at the end of the lines; the system for holding and storing further including a magnetic stabilizer configured for attracting and maintaining the spring in a rest position when the tractor unit is moving without trailer.