Database Environment for Fast Real-time Simulation of Urban Traffic Networks with ATMIS

This projects develops the environment for using the ATMIS simulation software developed under previous PATH projects (MOUs 39, 84 and 170) for real-time traffk simulation and scenario analysis with feedback from the real urban network. DYNASMART simulation model was developed during the MOU-39 research, and was augmented with a graphical user-interface and display during the MOU-84 research. However, for real-time use in realistically large networks, faster parallel processing is required, which is the focus of the current project, MOU-170. Based on the early results fiom MOU170 research, it has become apparent that the full potential of such a simulation framework cannot be realized without a database management system that handles the data for the multiple processes during the parallel simulation, as well as the network feedback data for real-time updates of the simulation data and parameters. An object-oriented database environment is proposed here. Partially on-line data and off-line data from the Anaheim ATMS research testbed will be used to replicate the real network feedback during the research. The model will be developed with as much compatibility with other PATH projects (MOU-141, MOU-169) as possible. It is expected that the model will complete the environment for simulation-based analysis of ATMIS in real-time, which will be required for the field operational tests envisaged in the near future by Caltrans, PATH, and FHWA