The Sharopoyezd (Russian: Шаропоезд; literally "ball-bearing train"), also known as ShELT (Russian: ШЭЛТ, acronym for шаро-электро-лотковый транспорт, "ball-bearing electric trough transport") was a Soviet attempt to develop a high-speed rail system in the 1930s. Instead of iron rails, the design specified a single, large concave rail made of concrete.
The Sharopoyezd (Russian: Шаропоезд; literally "ball-bearing train"), also known as ShELT (Russian: ШЭЛТ, acronym for шаро-электро-лотковый транспорт, "ball-bearing electric trough transport") was a Soviet attempt to develop a high-speed rail system in the 1930s. Instead of iron rails, the design specified a single, large concave rail made of concrete.
Source: Wikipedia "Sharopoyezd" · CC BY-SA 4.0
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