EXTENDED STATIC MODELING METHODS TO DYNAMIC NETWORK LOADING & OD ESTIMATION

Dynamic traffic modeling and simulation is a rapidly emerging area of Intelligent Transportation Systems (ITS). It deals primarily with the modeling and simulation of the complex dynamics of traffic operations and control systems. Most the modeling and simulation tools are yet in the research stage, and reside with major universities and research organization. However, there is a growing need for such tools by various public agencies and consulting companies. These tools must be simple and easy to implement, debug and calibrate. This paper describes an effort to extend commonly available transportation modeling packages to perform dynamic network loading, as well as OD estimation. The paper also discusses the extension of 24-hour static trip tables to dynamic trip tables using recent census and household survey data. The methodology could be applied to any static model. The results of the dynamic network loading are used to generate the assignment matrix, an essential requirement for any dynamic OD estimation method. The methodology described in the paper is simple and hence less sophisticated than those tools currently available with the universities. However, it can be easily implemented with limited computer resources. This methodology is being tested on the I-93 Integrated Traffic Management System Operations Test project in the metropolitan Boston area.