Continuum Modelling of Traffic Dymamics
Two new efficient higher-order continuum models are proposed to improve modelling of traffic dynamics. The new models do not require the use of an equilibrium speed-density relationship,...
Application of Fuzzy Set Theory to the Analysis of Transportation Problems
The potential of applying fuzzy set theory is discussed. Fuzziness in the nature of transportation engineering problems is identified and typical fuzzy theory techniques are presented....
Operation of Freeway Simulation Tools on I-35W
The paper discusses the experience of the staff of the Minnesota Department of Transportation in experimenting the traffic simulation models: FREQ10 and KRONOS6.2 . The project development...
Heavy Traffic Control Measurement Techniques and Control Strategies
Advanced technologies for traffic detection for freeway control systems are described. mm-wave radar detectors are used with a correlation of vehicle reflexion patterns to acquire section...
Assessment of the Sate-of-the-Art of Robotics Applications in Highway Construction and Maintenance
Automation and robotization in highway construction and maintenance are currently under active development in the United States and other countries around the world. Although road construction...
Applications of Robotics and Automation in Highway Maintenance Operations
This paper deals with the applications of Advanced Automation and Robotics in highway maintenance operations. The basic components of Robotics and Automation technologies are studied and...
Perception and Control for Automated Pavement Crack Sealing
Pavement maintenance is a major transportation engineering activity that has seen only partial mechanization and virtually no automation. Crack sealing is a typical maintenance task in...
Highway Pavement Surfaces Reconstruction by Moire Interferometry
The necessary basis for any cost-effective highway and bridge deck pavement management program is reliable, complete and up-to-date information concerning the state of pavement surface....
Design Considerations for Automated Pavement Crack Sealing Machinery
The purpose of this paper is to discuss the numerous considerations for designing automated machinery for the sealing of cracks in pavement. Operational requirements are presented and...
Comparison of Traffic Signal Systems in Australia and North America
Dynamic coordinated traffic signal systems were developed in Australia in the 1970's, and are now installed in many countries. In contrast, strong interest in new generation...
Fully-Distributed Control of Signal Networks
A fully-distributed real-time control strategy is described for signalized networks. The signals make compatible, simultaneous decisions about cycle length, offset and splits, without...
Cars: A Demand-Responsive Traffic Control System
This paper presents a demand responsive traffic control system for networks based on improvements from a combination of OPAC and ACTS approaches. The system has shown clear advantages...
Testing and Feasibility of VIPS for Traffic Detection
The California Department of Transportation (Caltrans) has asked the California Polytechnic State University (Cal Poly) at San Luis Obispo to investigate the effectiveness of existing...
Incident Detection Through Video Image Processing
A machine vision system for vehicle detection and traffic parameter extraction (called AUTOSCOPE) was recently developed at the University of Minnesota. Its advantages lie in its multispot...
Traffic Queue Detection Using Image-Processing
A method of queue/congestion detection is described using low cost image processing and computing hardware. It is capable of processing data from a length of roadway within a few seconds,...
Report of the DEVLONICS Video Based Traffic Detector Systems (DRS-CCATS/DTMSA)
In traffic monitoring systems many detectors are in widespread use to provide the necessary information. Image and video processing is one of the most defiant newcoming technologies in...
An Application of Advanced Technologies for Freeway Traffic Management?An Indiana Case Study
The Indiana Department of Transportation is in the process of implementing an electronic surveillance and control system on the Borman Expressway (I80/94). This paper presents a summary...
Evaluation of Reliability of Road Network for Better Performance, Advanced Management and Future Network Design
This paper proposes reliability as a new indicator for advanced management and future construction of road networks; and also presents a new reliability analysis method. This article contains...
Public Agency Issues in the Implementation of IVHS
Public agencies will be extensively involved in the deployment, maintenance, and operation of IVHS infrastructure. The existing fragmentation of transportation responsibilities will require...
Stereo Vision Onboard a Vehicle for Obstacle Detection
We show how two linear cameras, mounted behind the windscreen of a car, can be used to detect the obstacles on the road in real time, even with small computer architectures. Results of...
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