Simulation of Traffic Control Using Vissim-COM Interface

Vissim is a simulation software that has many uses. With its complete features, simulation of traffic conditions can be done to represent real world conditions. However, the limitations of Vissim's algorithm become an obstacle for developing the right traffic scheme. In order to implement custom algorithms, users need to bridge Vissim with applications that can process complex mathematical equation. It can be done using one of Vissim's feature called Vissim-COM interface. The use of Vissim-COM is crucial when users have to include custom algorithms that are not available on the Vissim GUI. Unfortunately, the use of Vissim-COM is a very rare thing done by the traffic engineer. Therefore, clear explanation on how to use Vissim-COM interface has also become a rare thing to find. This paper will provide some explanation on how to use Vissim-COM, including case studies of traffic control using custom algorithm to test the Vissim-Matlab interaction. This case study will use the traffic condition of Simpang Dago, Bandung. The use of custom algorithm was very effective to reduce the queue length, the custom algorithm result showed that the queue length of all 4 links were between 18-36 meters. Meanwhile, the queue length of the same links using traditional fixed time control were between 11-173 meters.