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Double-deck passenger coaches are the CJSC Transmashholding innovative development. The double-deck passenger coaches are designed to carry passengers in constant-formation trains on electrified railway main line sections with intensive passenger flow. Due to considerably better passenger capacity and comparable comfort level, double-deck coaches are high-performance means of transport contributing into significant reduction of operating cost for passenger transit. Flat shell car body is made of stainless steel.

The coach design incorporates state-of-the-art technical solutions in major part proven in single-deck coaches of the new product line. Due to Huebner gangway there was not more need in intermediate vestibule in the rear end of the coach that allowed additional space a one more toilet room. The coach is fitted with electrical heating system with heaters installed at the outlets of two air circulation units, as well as with recycling air disinfection system, aerosol fire-extinguishing system, and electronic key (card) based compartments access system, and other innovations.