Traffic simulation plays a useful role in studying traffic problems. The usefulness of traffic simulation becomes more obvious when a traffic system is too complex to describe using abstract mathematical models. For example, traffic simulation can dynamically reproduce realistic traffic flows, traffic accidents and other traffic phenomena in a low-cost and efficient manner. It can also reproduce the spatio-temporal variations of traffic flows, and is of great help in quantitatively analyzing vehicles, drivers, pedestrians, roads and traffic characteristics. Traffic simulation can visually present the dynamic conditions of vehicular flows in the road network, for example, whether there is congestion at specific locations, whether there are traffic accidents and what measures should be taken when facing such problems. As a result, traffic simulation is an efficient and flexible tool in assisting and optimizing traffic plan, design, regulation and even urban development. In addition, traffic simulation has been increasingly used in entertainment applications, such as racing games, virtual tourism, driving training, special effects in movies and games, and so forth, thus leading to an increasing need to incorporate realistic and immersive traffic scenarios into various virtual worlds.
Virtual worlds: tourism, driving training, racing games, special effects etc;
Traffic plan, design, regulation, and urban development;
Traffic guidelines and rules, and so forth.