摘要: |
This report presents the results of a study to examine advanced technologies and systems that can be applied to high occupancy vehicles, ridesharing and transit needs. Advanced technologies can be used to encourage the use of transit and rideshare facilities by improving their attractiveness and accessibility to travelers. In addition, they have the potential to increase the efficiency of transit and rideshare operations, reducing operational costs while offering higher levels of service to the public. Technologies were reviewed in the areas of traveler information systems, traffic management systems, fleet management and control systems, and automatic vehicle control systems. Within these areas, developments in the U.S., Europe and Japan were considered and a number of individual technologies were identified. Qualitative and quantitative assessments of the technologies in the broad technology areas were undertaken. Assessment frameworks were established to provide comparisons of system benefits and costs. The study included a review of current moves toward a national intelligent vehicle-highway system (IVHS) program. An outline of IVHS projects and activities directed at high occupancy vehicles, rideshare and transit vehicles has been prepared. These cover research, development, operational testing and standard setting activities for the technologies. Project descriptions are presented in limited detail, with emphasis placed more on the overall structure of the program than individual activities. Several of the near-term projects, with high-payoff potential, have been defined in more detail. The report concludes by recommending the direction of future work on transit and rideshare-related advanced technologies, within the framework of a national IVHS program. |