Petrol-engined track car Dhm No 3952 Brunig line CFF 1933 Track cars had to be easily removed from the rails to allow trains to pass. They were therefore lightweight in construction and equipped with handles. The track car of the Brunig railway had a cogwheel to enable it to be used on the mountain section. It was used for inspection runs. A trailer was also used to lubricate the rack-rail. Asper system Riggenbach gradient 120 %o 0,65 t 10 kW 2 cylinder petrol engine 45 km/h 4 seats load limit for track car 1.1 t gauge 1000 mm restored by Robert Aebi in operation 1933-1970