Railway System Of The Soviet Union
The Soviet Railways (Russian: Советские железные дороги (СЖД)) was the state owned national railway system of the Soviet Union, headquartered in Moscow. The railway started operations in December 1922, shortly after the formation of the Soviet Union. Soviet Railways greatly upgraded and expanded the Russian Imperial Railways to meet the demands of the new country. It operated until the dissolution of the Soviet Union in December 1991. The Soviet Railways were the largest unified railway in the world and the backbone of the Soviet Union's economy. The railway was directly under the control of the Ministry of Railways in the Soviet Union. After the dissolution of the Soviet Union, Soviet Railways split into fifteen different national railways belonging to the respective countries. However, after the end of Soviet Railways, rail transport in the former Soviet states greatly declined and have not recovered to their former efficiency to this day.
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4-8-4
Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of four leading wheels on two axles, eight powered and coupled driving wheels on four axles and four trailing wheels on two axles. The type was first used by the Northern Pacific Railway, and initially named the Northern Pacific, but railfans and railroad employees have shortened the name since its introduction. It is most-commonly known as a Northern. Overview Development The wheel arrangement was a progression from the Mountain type and, like the Berkshire and Hudson types, an example of the "Super Power" concept in steam locomotive design that made use of the larger firebox that could be supported by a four-wheel trailing truck, which allowed greater production of steam. The four-wheel leading truck gave stability at speed and the eight driving wheels gave greater adhesion. The evolution to the type occurred in the United States of America soon after the Lima Lo ...
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