| Title | The Demonstration and Outreach Project of the Real-Time and Dynamic Module for Traffic Analysis and Prediction(1/3) |
| Dept | Transportation Energy and Environment Division |
| Year | 2008 |
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| Summary | Intelligent Transportation Systems (ITS) aim at enhancing traffic management through information exchange among traffic management centers (TMC) and travelers. In order to provide appropriate models, two projects for developing traffic estimation and prediction systems have been completed by the Institute of Transportation (IOT) from 2003 to 2006. These projects developed an integrated dynamic simulation-assignment model, DynaTAIWAN (Dynamic Traffic Assignment and Information for Wide Area Networks), for Advanced Traffic Management Systems as well as Advanced Traveler Information Systems. The model is composed of a simulation-layer and a real-time control layer. The completed modules include a simulation-assignment model, dynamic traffic assignment procedures, real-time rolling horizon dynamic traffic assignment procedures, and real-time dynamic OD (Origin-Destination) estimation and prediction models. The continuing 3-year project focuses on DynaTAIWAN model applications, promotion, and outreach. This phase consists of three basic tasks: (1) to establish an integrated framework for DynaTAIWAN and transportation planning procedures (2) to experiment and validate possible function capabilities for DynaTAIWAN real-time applications (3) to maintain and enhance DynaTAIWAN and to provide technical support to the studies and users . The first year project aims at developing an integrated framework for DynaTAIWAN and transportation planning projects, and exploring possible interrelationships among data and models. The main issue is to utilize data from transportation planning projects in dynamic traffic assignment procedures. Two real networks are used in numerical experiments. The Taiwan northern freeway network is used to simulate possible traffic management strategies, including ramp control, VMS, and usages of shoulder-lanes. The planning data based on the Taoyuan Metropolitan transportation planning project is applied in the integrated framework to explore interrelationships between planning models and dynamic assignment models and to illustrate possible benefits of the integrated framework. |
| Post date | 2008/07/17 |
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