Since the mid-1990s, the U.S. Department of Transportation (U.S. DOT) Federal Railroad Administration (FRA) has sponsored research, conducted by the John A. Volpe National Transportation Systems Center of the U.S. DOT Research and Innovative Technology Administration (RITA), aimed at integrating Positive Train Control (PTC) and Intelligent Transportation System (ITS) technologies. The objective...

This paper presents a trinocular stereo algorithm that we have developed as part of an obstacle detection system that detects smaN obstacles at long range on the highway. We describe the stages of the stereo algorithm itseg and the reasons behind the design decisions that were made. This is followed by a description of the obstacle detection system that we have built. FinaIly, we show results f...

Systematic, well-designed research provides the most effective approach to the solution of many problems facing highway administrators and engineers. Often, highway problems are of local interest and can best be studied by highway departments individually or in cooperation with their state universities and others. However, the accelerating growth of highway transportation develops increasingly ...

The three major distress conditions affecting the performance of asphalt pavements are permanent deformation or rutting, fatigue or load associated cracking, and low temperature or thermal cracking. In an earlier technical topics article (Fall, 1998), we examined the causes of fatigue cracking and the importance of good compaction during construction to help minimize this type of distress. In t...

today’s, a common problem in cities is increasing delay and reducing the speed of traffic. on the other wise increasing costs of acquisition in urban area are not allow new routes and highways. also construction of new highway or street such as imam ali highway and sadr highway in tehran lead to develop new applications (such as brt lane ,…) and become quickly saturate and less efficient. there...

The Newell Highway is the longest highway in NSW, stretching over 1,000 kilometres from the Victorian border to the Queensland border. It is a major freight route from Melbourne to Brisbane, as well as being popular with interstate travellers and tourists. This route was reviewed using a multi-disciplinary method developed by the NSW Centre for Road Safety based on Safe System principles. The r...

Modeling and Simulation of the Automated Highway System by Farokh Hassanzadeh Eskafi Doctor of Philosophy in Engineering Electrical Engineering and Computer Sciences University of California at Berkeley Professor Pravin Varaiya, Chair We present the hierarchical structure for the control design of the Automated Highway System (AHS). This control hierarchy has four layers: network, link, coordin...

In this paper we study the application of automated test derivation and execution based on formal specifications. The object of testing is the Payment Box (PB) of the Highway Tolling System, a device which handles electronic payments. Challenges of testing the PB are the transaction speed, parallelism and encryption. We describe a methodology for automated testing and apply this methodology to ...

The report deals with an introduction to the control aspect of platoon maneuvers in Automated Highway Systems. The different platoon maneuvers have been introduced. The first part of the report consists of a review of the existing literature in this area. The survey is split up into the quasi-synchronous and vehicle follower controller methods of approach to the problem. The subsequent sections...

Fuzzy incidence graphs can be used as models for nondeterministic interconnection networks having extra node-edgerelationships. For example, ramps in a highway system may be modeled as a fuzzy incidence graph so that unexpectedflow between cities and highways can be effectively studied and controlled. Like node and edge connectivity in graphs,node connectivity and arc connectivity in fuzzy inci...