Rail transport in the Soviet Union the Soviet Union collapsed. Twenty other stations were under construction in 1985. The country's rapid transit system was the most intensively used in the world. The Soviet Union was a pioneer in the development of the diesel locomotive to replace the steam locomotive (dieselization) on non-electrified lines. But the USSR failed to make steady progress and while they lead the United States at first, they soon fell behind and their last steam locomotives were retired about 15 years later than for the US. The first mainline diesel locomotive in the world began running in 1924 in the USSR but it
USSR in Construction number of issues, as did Alexander Rodchenko and his wife, Varvara Stepanova. "USSR in Construction" first appeared not long after Stalin's denunciations of Constructivism as a bourgeois art form and the official proclamation of socialist realism as the only acceptable style of art. Many avant-garde artists thus turned to photomontage as an alternative mode of expression which could side-step around the rigid restrictions being put on painting. The last issue of the journal was published in December 1949. The magazine was succeeded by another one, "Soviet Union", which was launched in March 1950. USSR in Construction USSR in Construction ()