Applicable to the railway line traction, rescue and shunting operations, high-speed operation, and staff delivery, on-site inspection of traffic vehicles. There are rail car shape and tuning machine shape to choose from. Vehicle installed power 89-1000kW, can be used mechanical transmission, hydraulic transmission and power transmission. Hydraulic transmission using computer system control traffic, can achieve the automatic transmission of hydraulic transmission box, commutation and a variety of protection, alarm and display functions, can achieve double recoil to improve traction.