Abstract: Based on the characteristics of public road traffic and the practical application of metro ATP technology, this paper analyzed the structure and function of ATP system suitable for trams, carried out the three-dimensional driving simulation of the tram based on ATP system. The driving simulation system was developed by using C# programming language and Visual Studio 2013 development platform. The three-dimensional scene simulation module was designed based on Unity3D game engine and 3ds Max. At last, the simulation system implemented the simulating driving under the protection of ATP, and the simulating driving could be displayed well by 3D scene.