Why aren t railroads wider?

Because of their energy balance, train tracks must be very level (a 2% grade is very extreme). Because of this, when you come to mountains you go through them. Making a wider hole isn't a good idea. Railroad trains almost never tip over because the engines and most freight cars are massively heavy.



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Narrower gauge railways usually cost less to build because they are usually lighter in construction, using smaller cars and locomotives (smaller loading gauge), as well as smaller bridges, smaller tunnels (smaller structure gauge).

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If locomotives were imported from elsewhere, especially in the early days, the track would be built to fit them. In some cases standard gauge was adopted, but many countries or companies chose a different gauge as their national gauge, either by governmental policy, or as a matter of individual choice.

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North American railroads until the mid- to late-20th century used rails 39 feet (11.9 m) long so they could be carried in gondola cars (open wagons), often 40 feet (12.2 m) long; as gondola sizes increased, so did rail lengths.

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American railways were also built on a wider gauge (the distance between the rails), which allows for larger and heavier trains. As a result, American freight railways are much more efficient than their European counterparts, carrying almost three times as much cargo per mile of track.

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While the US was a passenger train pioneer in the 19th century, after WWII, railways began to decline. The auto industry was booming, and Americans bought cars and houses in suburbs without rail connections. Highways (as well as aviation) became the focus of infrastructure spending, at the expense of rail.

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Since the chariots were made for or by Imperial Rome they were all alike in the matter of wheel spacing. Thus, we have the answer to the original question. The United States standard railroad gauge of 4 feet, 8.5 inches derives from the original specification for an Imperial Roman army war chariot.

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Doing so can lead to severe damage to the train, derailment, or even endanger the lives of passengers and railroad workers. Why are there crushed stones alongside rail tracks? This is a good question with an interesting answer. The crushed stones are what is known as ballast.

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When properly maintained by a Midwest railroad contractor, a modern running track has the potential to last for almost 30 years after its construction. It may be difficult to recognize the signs of deterioration in rails because they appear to last an entire lifetime.

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Before the opening of the Qinghai–Tibet Railway in China, currently the highest in the world, the highest three railways were located in the Andean countries of Peru and Bolivia. In the Alps, the Jungfrau Railway has the particularity of reaching an elevation that is higher than the local snow line.

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The US standard railroad gauge is 4 feet, 8.5 inches (Gauge means width between the two rails). The U.S. federal safety standards allow the standard gauge to vary from 4 ft 8 in (1,420 mm) to 4 ft 9 1/2 in (1,460 mm) for operation up to 60 mph (97 km/h).

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