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| | Rail transport - Facts, Information, and Encyclopedia Reference article |
 | | Rail transport is the most energy efficient means of mechanised land transport. |
 | | Rail transport is also one of the safest modes of transport, and also makes highly efficient use of space: a double-tracked rail line can carry more passengers or freight in a given amount of time than a four-laned road. |
 | | Rail lines that carry little traffic are often built with a single track used by trains in both directions; on rail lines like these, "crossovers", "passing loops" or "passing sidings", which consist of short stretches of double track, are provided along the line to allow trains to pass each other, and travel in opposite directions. |
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