Busan urban rail line 4 motor car(color: blue) first ever unmanned light rail transit in Korea
Line 4 is K-AGT light rail transit to use the unmanned operation first ever in Korea which is developed as the national business by the ministry of land and ocean. For its outlook, "sail of yacht" shame is materialized using front head part circle shaped glass and the blue and red color of the car body took the image of the white sail and the blue ocean. The most outstanding characteristic is it doesn't have operating room because it is unmanned vehicle, and the big glass in the passenger room is used which brings completely open space, thus, passengers can enjoy the outside view while on the train. The fresh atmosphere is designed using white and blue color for internal materials, floor and sheet. Besides, the multi-purpose space is designed to bring the convenience of the weak such as wheel chair and stroller etc. and the comfortable use is secured for the short user by applying handles whose heights are different. It is also equipped with state-of-the-art safety system to be controlled in remote place after the control center recognizes the situation promptly using CCTV camera or emergency calling device when an emergency takes place.

The running method of line 4 motor car is the lateral side guide method using the rubber tyre, thus, it brings less noise, less vibration and prevents derailing and improve ride quality. And even when the tyre is flat, there is a safety wheel(aluminum wheel) in the tyre to guarantee the normal operation. Its car size is lighter than the others and current collection device and cooling device are installed in the lower part of the car. Currently, we have 17 formation 102 cars long system.