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China stipulates that the length of passenger trains generally does not exceed 18 meters. According to the different service modes, the structure of the bus is also different, which can be divided into tourist buses, urban public buses, highway buses, railway buses, tourist buses and school buses. According to the overall structure, passenger cars can be divided into bicycles and trains. Bicycles are the basic models, which are often divided into large, medium, and small according to the total weight of the passenger car or the number of seats. China stipulates that the length of a single passenger car generally does not exceed 13.7 meters. The carriage and frame of the passenger train are divided into two sections, front and rear. The two carriages are connected by an articulated plate, and the two carriages are connected by a movable fold tent, so that the carriages are connected front and rear, so they are also called articulated or channel-type passenger cars. For more details, ple
