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A rubber-tyred metro or rubber-tired metro is a form of rapid transit system that uses a mix of road and rail technology. The vehicles have wheels with rubber tires that run on a roll way inside guide bars for traction. Traditional, flanged steel wheels running on rail tracks provide guidance through switches and act as backup if tyres fail ...
The MP 14 (French: Métro Pneu appel d'offres de 2014; English: Rubber-tyred metro ordered in 2014) is a rubber-tyred electric multiple unit for the Paris Métro. Manufactured by Alstom as part of the Alstom Metropolis family of units, it is the seventh generation of the rubber-tyred class of trains to be used on the system and is used on Line ...
Some rubber-tyred metros feature special wheelsets with rubber tyres outside of deep-flanged steel wheels, which guide the bogie through standard railroad switches and keep the train from derailing if a tyre deflates. The system was originally conceived by Michelin for the Paris Métro; the first line opened in 1956.
Running wheels (also known as road wheels or tractor wheels): positioned on the top of the rail, bearing the weight of the train. Side friction wheels: positioned on a horizontal plane, either inside or outside of the rails. These hug the sides of the rail, keeping the train centered. Up-stop wheels (also known as underfriction wheels or up ...
The most usual cause of damage is drag braking on severe gradients.Because the brake blocks apply directly on the tire, it is heated up, relaxing the interference fit. It is not feasible to fit the tire with such a heavy interference as to eliminate this risk entirely, and the retaining ring will ensure that the tire can only rotate on the wheel center, maintaining its alignment.
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Micheline train at the Cité du train museum in Mulhouse, France Micheline tyre and rim. Michelines were a series of rubber-tyred trains developed in France in the 1930s by various rail companies and rubber-tyre manufacturer Michelin. Some Michelines were built in the United States by the Budd Company. [1]
Rubber-tyred tram in Clermont-Ferrand, France. A rubber-tyred tram (also known as tramway on tyres, French: tramway sur pneumatiques) is a development of the guided bus in which a vehicle is guided by a fixed rail in the road surface and draws current from overhead electric wires (either via pantograph or trolley poles).