This car transporter train has been designed for carrying cars, tourist coaches and HGVs up to a total weight of 28 t and is used as a shuttle vehicle. The carrying of buses and HGVs calls for transportation cars with a very low continuous flat loading area in order to utilise the greatest possible loading profile. This calls for the use of a bogie having a small wheel diameter of 520 mm. The vehicles are “reproductions with modifications” of the car shuttle AP 43 deployed in the Lötschberg Tunnel. They are designed in accordance with the clearance gauge EBV O3. The vehicles along with the largest possible profile will be found illustrated in the annexed attachments. At the Simplon Tunnel ramps are available for driving up the vehicles onto the loading train via the SBB car loading wagon.

The configuration of the loading train is as follows:
– Locomotive (forms no part of this description)
– Passenger coach (forms no part of this description)
– Ramp wagon (forms no part of this description)
– Ramp wagon (RW)
– 7 intermediate wagons (ZW)
– Ramp wagon (RW)
– Car loading wagon (forms no part of this description)
– Control wagon (forms no part of this description)

The length of a train – comprising 2 ramp wagons and 7 intermediate wagons – is 185.54 m. The wagons are coupled to one another by means of semi-automatic compact centre buffer couplers (Faiveley). The coupling points are covered over with broad three-section bridging flaps. Decoupling takes place on pneumatic lines from above after the centre flap has been raised. A rubber hollow profile serves to fill the passage gap to the counter-wagon so that a virtually even pathway results that is also suitable for cars with small wheels. The gaps in the lateral railings are closed by means of spring-mounted cables between two wagons. Both types of wagon reveal a smooth passage (absence of hollows or oversized interstices) consisting of anti-skid gratings and provide adequate stability for the vehicles in addition to good winter performance characteristics. Flaps are present in the floor area above the bogies allowing maintenance and inspection work to carried out on the brakes. Fitted lengthwise in the centre of each wagon are four beamers reflecting on both sides so as to guide the vehicle driver more easily in the dark. The road vehicles are not fixed with wheel chocks. All that needs to be done is to apply the parking brake and to put the vehicle into first gear or “P”. The intermediate wagons are completely covered over as a means of protection against rockfall, masses of snow, falling icicles and flying sparks from the conductor line wires. The ramp wagons are provided with a roof extending approximately one-third across the vehicle length.