Are road trains allowed in the USA?

The term road train is not commonly used in the United States; turnpike train has been used, generally in a pejorative sense. In the western United States LCVs are allowed on many Interstate highways. The only LCVs allowed nationwide are STAA doubles.



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Your ticket to world famous train routes, USA's most celebrated national parks, and a scenic coast-to-coast experience like nothing else starts with Amtrak. With private rooms, onboard meals and plenty of legroom, you can sit back and enjoy your entire vacation experience.

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For numerous reasons, putting goods on trucks is simply cheaper. One potential reason is that a train car can hold about half as much weight as a semitruck, due to the weight of the car itself. While it is true that single trains can carry far more cars, this still limits what can be transported in this manner.

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There are many reasons for this. There is limited service between cities (Amtrak says it runs 300 trains with about 87,000 passengers per day), freight is often prioritized over passenger service in the U.S., and trains and facilities are often outdated.

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The short answer is that railroad electrification costs much more then dieselization, and in most cases it would not allow significant improvement of operations.

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The sole long-distance intercity passenger railroad in the continental U.S. is Amtrak, and multiple current commuter rail systems provide regional intercity services such as New York-New Haven, and Stockton-San Jose. In Alaska, intercity service is provided by Alaska Railroad instead of Amtrak.

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The Federal Railroad Administration does not currently set any limits on train lengths – and also doesn't regularly track train lengths or their associated risks. That has allowed freight railroad companies to occasionally operate trains up to 8 kilometres (5 miles) long.

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A B-double is defined in the Heavy Vehicle National Law (HVNL) as a “combination consisting of a prime mover towing two semitrailers, with the first semitrailer being attached directly to the prime mover by a fifth wheel coupling and the second semitrailer being mounted on the rear of the first semitrailer by a fifth ...

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