total: 240,000 km mainline routes (nongovernment owned), standard gauge (1.435 m) (1989)
See also Transportation in the United States.
... (GPU, 1922-1923) Obyedinennoye Gosudarstvennoye Politicheskoye Upravleniye[?] (OGPU, 1923-1934) Narodnyi Kommissariat Gosudarstvennoi Bezopastnosti[?] (NKVD, ...