Up to eight cars per train are admissible. Cars model 81-717.5 are placed at both ends of the train to permit the shuttle operation of the train. The cars are equipped with d.c. electric drive and the system of smooth pulse-width modulation of current in the excitation windings of the traction motors. The two-axle bogies of the cars have frame suspended traction motors and axle suspended traction gears. For primary suspension a set of spiral coiled springs is used.
Secondary suspension is of cradle type and also includes spiral coiled springs.
Hydraulic shock absorbers are used in the secondary suspension system as dampers of vertical and lateral vibrations.