Railway rolling stock

The railway rolling stock is composed of the whole of the Véhicule towed S, engines or, designed to move on a Railway.

The railway vehicles are provided with wheels out of steel forming with the Rail a narrowly coordinated system. The rails used are generally flat-bottom rails, and for the trams of the grooved rails. The bearing of the vehicles on the way is autocentré by the form in double cone of the riding surfaces of the wheels and the rails respectively. The rolls of the wheels, located inside those, guarantee against the Déraillement S under the normal conditions of operating.

The main advantage of the conventional vehicles on rail is weak the adhesion coefficient of the tire out of steel on the top of the rails, out of steel also, which makes it possible to move important masses with a relatively weak energy expense. It also makes it possible to constitute convoys big length permattant the transport of mass. It is at the same time a disadvantage under the angle of the old Frein.

The construction of railway rolling stock is the object of a specialized industry, the railway manufacturers. This sector a long time kept a national character in the principal industrialized countries, each country tending to emit particular technical standards. It has however tended to be internationalized, even with mondialiser for a few years, in particular in Europe because of policy of leiberalisation followed by the European Union.

Principal types of railway vehicles

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