Automatic guided track system is a medium-sized transportation system. Trains run along special guiding devices, and the running of vehicles and stations can be controlled by computers. It is said that it can be fully automated and unmanned. The automatic guided track system is suitable for point-to-point traffic lines with relatively concentrated urban passenger flow, and it can be operated by stopping less in the middle when necessary.
Generalized automatic guidance system, also known as AGT, theoretically includes unmanned automatic guidance systems, such as APM, intelligent track, straddle-type monorail APM, PRT, etc. There seems to be no strict definition of automatic navigation in China. Rubber-tyred rail transit in the world, which tends to satisfy the GOA4 unmanned signal system, can be regarded as automatic guidance. In this case, a large number of unmanned subways and smart tracks in a few cities in China cannot enter this category. BYD Cloud Bar in Guang 'an can be regarded as APM.