Dynamic Traffic Flow Simulation And Dynamic Network Traffic Flow Modeling

• Main Authors: Chi-Wei Lin, 林其蔚
• Other Authors: Hsun-Jung Cho
• Format: Others
• Language: en_US
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/40231763599903484623

碩士 === 國立交通大學 === 運輸科技與管理學系 === 90 === Dynamic traffic flow simulations can be used to forecast the variations of the traffic flow on a roadway section. Thus, it can be an analytic tool for making traffic control policies. Also, it can provide real-time traffic information, which is an important part in implementing the Intelligent Transportation System (ITS). Macroscopic dynamic traffic flow models regard the traffic flow as a continuous fluid, which is in the form of hyperbolic partial differential equation. However, the nonlinear partial differential equations are difficult to resolve, and there does not exist analytic solutions. Moreover, different solutions will be derived under distinct initial or boundary conditions. Therefore, it needs numerical schemes to obtain the approximations. Most of the studies of traffic flow simulation in the past are focused on single-lane roadway sections. There are few discussions about the traffic flow behavior on multi-lane roadway sections, and for the time being the studies of multi-lane roadway sections are mostly in the microscopic point of view. Thus, a multi-lane dynamic traffic flow model based on a proposed single-lane macroscopic dynamic flow model will be developed in this thesis, and the assumptions of traffic flow behavior will be verified by traffic video records. In addition, the discussion subject will be extend into traffic networks, and an overall traffic network model will be construct by combining the macroscopic dynamic traffic flow model describing the traffic flow propagation behavior on links and the macroscopic route choice model describing the traffic flow splitting behavior on nodes.