This European Standard specifies the technical requirements to minimise the hazards listed in Clause 4 which can arise during the commissioning, the operation and the maintenance of conveyor belt vehicles when used as intended, including misuse reasonably foreseeable by the manufacturer, when carried out in accordance with the specifications given by the manufacturer or his authorised representative. It also takes into account some requirements recognised as essential by authorities, aircraft and ground support equipment (GSE) manufacturers as well as airlines and handling agencies. This European Standard applies to a) self-propelled conveyor belt vehicles with or without driver's accommodation, b) self-propelled conveyor belt vehicles equipped with a van body, c) towed conveyor belt vehicles, intended to be used for manual loading/unloading of aircraft. This European Standard does not apply to any extensions or appurtenances of conveyor belt vehicles entering the aircraft cargo compartment in order to facilitate loading and unloading therein ("Aircraft Bulk Loading Systems", ABLS). This European Standard does not apply to pneumatic systems and to cable-less remote controls. This part of EN 12312 is not applicable to conveyor belt vehicles which were manufactured before the date of publication of this European Standard by CEN. This part of EN 12312 when used in conjunction with EN 1915-1, EN 1915-2, EN 1915-3 and EN 1915-4 provides the requirements for conveyor belt vehicles.