VISSIM is traffic simulation software that models multimodal transportation systems in high detail. It allows modeling of junction geometry, signal control, public transportation, pedestrians, and bicycles. Dedicated motion models provide accurate simulation of interactions between motorized vehicles, bicycles, and pedestrians. VISSIM also enables testing of autonomous vehicles and their integration with other modes of transportation. The software features a graphical interface and tools that make it easy to create, edit, and output results from complex transportation networks.