PATH

This report documents a practical work conducted at California PATH for developing a portable tool to be used at the control cabinet level to accurately diagnose any fault(s) of a loop detection system (including loop circuits, loop cards, cable links, etc.), to check the detection accuracy, to deal with sensitivity of detector card, and to correct the faulty data. To achieve these functionalities at the low level, it is necessary to utilize an independent source as a baseline data to compare against the loop detection system output. Such a comparison also permits an evaluation of the loop...

This report describes progress in the application of computer vision techniques to the lateral and longitudinal control of an autonomous highway vehicle. A vehicle's lateral dynamics and the design of an appropriate controller for lateral control are investigated. Stereo vision, in conjunction with a scanning laser radar sensor, are studied for providing range information applicable to the longitudinal control problem. The results from the experimental demonstration of this system are reported as part of the National Automated Highway Systems Consortium (NAHSC) Demonstration that took...

Vehicle-Infrastructure Integration (VII) is one of the most important new national programs within the field of ITS, but until now it has been treated at the federal level as a deployment-oriented activity, without significant research elements. This report identifies some key research issues that need to be investigated in support of VII, in order to ensure that the VII concept and designs are as efficient and effective as possible and in order to produce the essential knowledge base that public agencies throughout the country can rely upon to make well-informed decisions about...

This report provides an historical and case study analysis of policies aimed toward the management of complex systems, with specific reference to the role of public policy and technology in balancing surface transportation system demand and supply. Three case studies form the crux of the paper energy management, airport management, and Internet growth. Lessons from these case studies are then applied to the circumstance of ITS deployment to manage surface transportation in California. Following an introductory section (1), section 2 provides an historical analysis of the forces with have...