Hybrid traffic flow model

Traffic flow models had become an important tool for modeling the operations of dynamic traffic systems. Different traffic flow model had its advantage and disadvantage. While microscopic simulation models provided a more detailed representation of the traffic process, were macroscopic and mesoscopic models able to simulate traffic dynamic of large networks in lesser detail, but without the problems of application and calibration of microscopic models. In order to take the advantage of them, hybrid traffic flow models are introduced in this paper. They are combined by two or three kinds of traffic flow models which are mentioned above. A hybrid approach could remedy these shortcomings by limiting the size of microscopic simulation to specific areas where detail is needed, reducing application and calibration efforts and improving simulation speed on a larger surrounding. Some research orientations and problems are discussed at the end of paper.