The car numbers of the trains range from x701 to x724, where x depends on the carriage type. Individual cars are assigned a 4 digit serial number. A complete six-car trainset consists of an identical twin set of one driving trailer(DT) and two motor cars(M1 & M2) permanently coupled together. For example, set 705/706 consists of carriages 3705, 1705, 2705, 2706, 1706 and 3706.