Intelligent Transportation Systems

This report presents the results of Phase I of a multi-year research effort on "Field Investigation of Advanced Vehicle Reidentification Techniques and Detector Technologies," and extends previous PATH research by the authors on MOU 336 "Section-Related Measures of Traffic System Performance: Prototype Field Implementation." The focus of this research included the following: significant expansion and enhancement of the ILD-based vehicle reidentification system at a major signalized intersection in Irvine, California to address reidentification of turning vehicles in addition to through...

This technical report summarizes the benefit/cost evaluation of the SLO Transit EDAPTS ITS system. It provides a detailed description of the methodologies and procedures used, as well as the research findings resulting from the evaluation effort. Using passenger questionnaire, boarding time surveys and interviews with SLO Transit drivers and administrators, the research team collected and estimated various benefits and costs of the SLO Transit EDAPTS system and conducted a benefit/cost (B/C) ratio analysis on the EDAPTS system. Also the research team performed a sensitivity analysis of B/C...

This project is a one-and-half year research and experimental effort to investigate the implementation of the precision docking system on a bus and to demonstrate that the system can provide superior docking accuracy. Since a bus cannot be secured for docking experiments during the period of the project, the Buick LeSabre test vehicle was used to further the docking system development. The work included (1) complete control analysis and integrate docking algorithm with lane-keeping algorithm; (2) software development that integrated the modularized new signal processing algorithm with the...

This document summarizes the microscopic traffic simulation models used in the project entitled Using Cooperative Adaptive Cruise Control (CACC) to Form High-Performance Vehicle Streams. The major components of the microscopic traffic model include the vehicle dispatching model, human driver model and ACC/CACC model. The vehicle dispatching model determines how a modeled vehicle enters the simulation network and the distribution of different types of vehicles across the multi-lane highway. The human driver model and ACC/CACC model specify the car following and lane changing behaviors of...