Task Order 5600
Transportation Safety Research
Intersection Decision Support
The California approach and contribution to the overall three-State Intersection Decision Support (IDS) program is perfomed by TO 5600. It stems from a systems-oriented and top-down perspective. It is tempered by the need to provide real solutions for a likewise real "point of departure" crash type. Hence, the TO 5600 at once addresses:
Hence, as a necessary in-depth supplement to the top-down systems approach, we will also investigate key enabling technologies, most notably cooperative infrastructure-to-vehicle (or vehicle-to-infrastructure) and vehicle-to-vehicle communication. We will also conduct naturalistic driving data collection, perform driver modeling, develop an integrated IDS simulation approach, and look at the applicability of a large set of already- or nearly-available "commercial off the shelf" systems toward meeting IDS requirements. We are also investigating the use and usability of roadside-mounted dynamic message signs.
Along the way, we will perform analyses, experiments, design and planning to allow US DOT and the Infrastructure Consortium to have a lasting stamp on the life-saving IDS systems that are deployed by the year 2010 and beyond.
Our research plan is constructed to realize, in three years, the requirements, tradeoffs assessment, and technology investigations necessary to define an IDS. Toward the end of our three-year program we will combine our understanding of the problem definition, IDS technologies and our integration experience with a standard Caltrans intersection (with advanced traffic controller) and design an IDS system that can be field tested, as a first step toward deployment.
A highlighted feature of our experimental approach is that we will leverage a significant Caltrans investment in installing a four-way signal controlled intersection at our Richmond Field Station facility, where we will primarily work on human factors experiments, verification of warning system effectiveness, and communication hardware and protocol development.
Our contributions, therefore, are systems engineering, to include significant contributions to problem definition, tradeoff studies, and the like. We will also provide significant contribution in key technical areas, to include wireless communication, roadside messaging, driver modeling, and simulation. We will crystallize our contributions with LTAP/OD and LTAP/LD example applications, which will serve as our point of departure in determining the "best" national solution.
We will also "deliver" a test intersection, and its results - "proof" that ad hoc networks of vehicles can be individually addressed to talk to intersections and vice versa. Finally, we will develop a plan to implement these in a California intersection within the description of our FOT.