To meet the requirement of the fifth speed up campaign of Chinese railways, and based on the proven technology of previous Model RW25G and RW25K cushioned berth sleeping car, the Model RW25T cushioned berth sleeping car was developed and manufactured by TRC.The planar arrangement of this car is as follows: vestibules at its both ends; lavatory, attendant’s room, electric water boiler, and short-corridor with multi-function electric apparatus cabinet at “B” end of the car; lavatory and short-corridor at “A” end of the car; open-type washing room for three persons simultaneously, 9 cushioned berth sleeping compartments and side corridor at the central part. It can meet the requirement of running 20 hours at the constant speed of 160 km/h, and non-maintenance for running 5,000 km after repair in depot. It possesses the advantages of reasonable planar arrangement and interior layout, luxurious interior decoration, harmonious internal and external tone, and high riding comfort. So this kind of car is of main traffic equipments on Chinese railway trunk lines.The following subassemblies such as CW-200K bogie, integrated electro-pneumatic brake device, tight-locked coupler and vacuum dejecta collection device, network monitoring system composed of WTB (wired train bus) and MVB (multifunction vehicle bus) controlled by PLC, running safety monitoring and diagnosing system and radio transmission system are employed.. So its running safety and reliability is improved greatly. The car is equipped with audio and video system and centralized controlled passenger information system (PIS). One set of LCD TV is provided for each berth of the car.