Cogwheel train 855 of the Transports Publics du Chablais (TPC) from Col-de-Bretaye to Villars-sur-Ollon, above Col-de-Soud. Leading is cab car Bt # 64, followed by cab car Bt # 62 and cogwheel railcar BDeh 4/4 # 82 (built 1977) in the rear. On this Abt cogwheel line, with a maximum grade of 17 %, the railcars are on the mountain side, pulling upwards.