苏联为了积累运用双层客車的經驗,1959年从民主德国制造了座位总数为620席的五节活节式双层客車組。該車組于1959～1960年間投入了运用。运用表明,这些車不能适应冬季条件下工作,因为車体隔热性不够,采暖能力小,单层窗框密封不严。但是这种車的技术經济指标比普通客車优越。 In order to accumulate experience with the use of double-decker buses, the Soviet Union built a five-seater double-decker bus group with a total seating capacity of 620 seats in 1959 from the German Democratic Republic. The car was put into operation in 1959 ~ 1960. Use shows that these cars can not adapt to work under winter conditions, because the body insulation is not enough, heating capacity is small, single-lasted sealing lax. However, the technical and economic indicators of this car superior to the average passenger car.