The invention discloses a bridge car. The bridge car is operated by a plurality of bridge
pier tops being specially provided with electric I-shaped wheel type rollers to support and push a single-segment
carriage with a rigid length greater than 2A, wherein an adjacent interval A of the bridge
pier tops is over 10 meters, and occupied ground is less and no bridge body stretches across to obstructscenery. The bridge car is much cheaper than the bottom surface of a
carriage with short rail tracks so as to be constructed straight and strong, and people and objects inside of the car are protectedto be
safer and more comfortable. The bridge car is in contact with the rollers downwards so that foreign matters and dust which are adhered to the bridge car can be greatly reduced. Even driving toa turnout, a direction choosing roller which hangs down only from one side of the
carriage can be used for crossing the outer side of a guide rod fixedly connected to the outer surface of a bearing atthe side end of a roller table to
restrict the car from entering the turnout on the side. A plate turnout and a centimetre-wide turnout seam are disconnected.
Caterpillar bands are wound between thebridge car and the rollers in a padding mode, and a
cushion is easily added at the bottom of the bridge car to enable the operation more stable and efficient. Even the length of the carriage can be reduced to 1.5A to A to save money, the total cost and technical difficulty are close to ordinary trains, and no magnetic
pollution of magnetic suspension or delikatny is achieved. The speed per hour can reach nearly 600,000 meters, and the distance to home after debarkation is far closer than an airport. A plurality of support-rod-type brakes are arranged at the bottom of the bridge car to supportthe bridge car to perform
emergency brake by separating from the rollers. No driving device needs to be arranged in the carriage to reduce sources of danger.