On Secondary Development of PTV-VISSIM for Traffic Optimization

Traffic microscopic simulation has been widely used in traffic network performance analysis. Microscopic simulation is safer, cheaper and faster than implementing and testing in real traffic environment. One of the difficulties in traffic simulation is how to verify the effectiveness of the traffic optimization model. The effect of the control and optimization algorithm can be achieved by using VISSIM microscopic simulation software. The internal functions of the microscopic simulation software are relatively simple. The basic traffic simulation parameters can be set in advance to simulate the conditions of the traffic network, cause the parameters cannot be effectively controlled constantly. Thus secondary development of VISSIM is necessary. This article study the secondary development of VISSIM software with Visual Studio(C#), and the Component Object Model(COM). This method is intended to provide useful implementation for the secondary development of VISSIM micro-simulation based on the C# compilation environment. A traffic simulation platform integrated with VISSIM and Visual Studio(C#) for traffic optimization simulation was proposed. The development of a traffic simulation platform displaying road network parameters constantly. It makes significance help to the further research and testing of intelligent traffic. And the platform can greatly reduce programming complexity and save programming time, making it easy to master. This article also presents examples of signal timing optimization based on single-intersection simulations.