In order to distinguish between light rail and subway, modern urban rail transit train can be divided into a, B, c three models, corresponding to 3 meters, 2.8 meters, 2.6 meters train width. The rail transit route of the type A or B train is called the Subway, which adopts the $number card marshalling train, the rail transit route of the C-type train is called light rail, the train with $number card is used, and the vehicle's model and formation determine the axle weight and platform length.
Although Shanghai rail Transit line Line 3 adopts 6-card grouping A-type train, 98% of the routes are on the elevated road, but according to the vehicle classification standards still belong to the subway line; Shanghai Rail Transit line Line 6 Although the use of 4-card grouping C-type train, 70% of the routes are in the tunnel, but according to the vehicle classification standards still belong to the light rail line.
A-type vehicle is the highest-end of the urban rail transit train, its characteristics are the body width and grouping large, a-type car width of 3 meters, the Alstom Metroplis Metro train in Shanghai rail Transit line Line 10 has a width of 3.2 meters; 6 card Group A Metro train maximum capacity of 2460 people, Shanghai Rail Traffic 1, Line 2 line of Alstom and Siemens 8 card Group A Metro train maximum capacity of 3280 people. The cost and technical content of B-type car and C-type car are less than that of type A.
The development of Chinese cities, some large and medium-sized cities have opened or are building subway and light rail, ordinary people from the urban rail transit system less contact, understanding of the late, there will be some misunderstanding concept. For the difference between the subway and the light rail, some people think that in the urban rail transit, the subway is called by the Underground, the light rail is on the ground or overhead, and some people think that the rail weight of the light rail is lighter than the subway, both of which are wrong. Urban rail transit is divided into two kinds of subway and light rail system, subway and light rail can be built on the ground floor, floor or overhead road. In order to enhance the stability of the track, reduce the maintenance and maintenance workload, increase the return section and reduce stray current, metro and light rail are selected by the 1435-millimeter international standard track as a train track, with the National Rail train selection of the same track specifications, and there is no so-called rail weight points.
The subway is not limited to this form of running lines in underground tunnels, but rather refers to the large capacity urban rail transit system with 30,000 to 70,000 people with a single one-way transport capacity at the same time as high peak hours. The operation route is diverse, the underground, the ground, the overhead three organic combination. Many cities at home and abroad have used "rail transit" instead of "subway" this traditional term.