Why The Standard Gauge Is 1435mm The reason why the standard gauge is 1435mm is stipulated by the International Railway Association. In 1937, 1435mm was established as the standard rail, that is, the common rail (equal to 4 feet 8 inches in British system). Sixty percent of the world's railways have standard track. This common gauge is also called the standard or international gauge. The gauge wider than the standard gauge is called the broad gauge, and the gauge narrower than the standard gauge is called the narrow gauge.Read More
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