The IC double deck passenger cars in Finland has been put in operation.

In view of the problems appeared in the operation of 25B double deck passenger cars,the suggestions and reasons to supplement and to reform during overhaul are analyzed.

The problem of water leakage in the air conditioner sets on double deck passenger cars is investigated and analyzed.

The dynamic gauge analysis is made upon the double-deck passenger cars exported to Iran by CSR Sifang Locomotives & Rolling Stock Co.

Described are the structure, plane layout and equipment in the new type M6 double-deck passenger cars.

Described are the CORADIA double-deck passenger cars and X40 double-deck multiple units manufactured for Swedish State Railway by Alstom, as well as the concept of overall quality administration.

The property of the air conditioner and the automatic control mode for series E1 double decker passenger car in Japan are introduced.

This paper begins with the present conditions of development of double deck passenger cars and the development trend of passenger transport at the beginning of the next century,the tentative idea for the development of double deck passenger cars in the“Tenth Five Year Plan”and in 2015 is put forward.

Through comparison with the technology of double deck passenger cars abroad,the gap existed is found out,the future development of double deck passenger cars in our country is prospected.

Double-deck bus safety regulation ECER 107 isa extremely comprehensive safety regulation, it providessystem safety requirements on the design of double-deckbus.