What is the gap between two rails?

These gaps which are of the order of a few millimeters, are provided to allow room for the rails to expand the rise in temperature due to the atmospheric temperature as well as the friction caused by running of train. All materials expand when heated and contract when cooled.



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Hint:The gaps left among straight rails on a railroad track are that the rails extend in summer. The gap is given to permit this expansion. If no gap is given, the expansion in summer will cause the rails to bend sideways. That will end in train accidents.

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WHEN Stephenson was building the Stockton to Darlington railway, he decided on the gauge by measuring the axle width of 100 farm wagons and taking the average, the result being 4ft 8 in. He may have intended to allow local people to use the track to convey goods with their own wagons.

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In North America, equipment for unlimited interchange between railway companies is built to accommodate for a 288-foot (87.8 m) radius, but normally a 410-foot (125.0 m) radius is used as a minimum, as some freight carriages (freight cars) are handled by special agreement between railways that cannot take the sharper ...

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The US standard railroad gauge is 4 feet, 8.5 inches (Gauge means width between the two rails).

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It's important to understand the reasoning behind stopping before a railroad track. The biggest, most important reason is this: safety. Especially for large vehicles carrying passengers or dangerous materials, this is even more important. Trains are heavier and harder to stop than even a fully loaded semi truck.

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