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EBookClubs

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Book In service Evaluation of a Detection control System for High speed Signalized Intersections

Download or read book In service Evaluation of a Detection control System for High speed Signalized Intersections written by Karl Zimmerman and published by . This book was released on 2005 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traffic engineers are often faced with operational and safety challenges at rural, high-speed signalized intersections. Vehicle-actuated control, combined with multiple advance detectors, is often used to improve operations and safety. However, this type of detection and control has not always resulted in a significant number of crashes. Crashes sometimes continue to occur at high-speed intersections, and delays to traffic movements can be unnecessarily long. An innovative detection-control system was developed for the Texas Department of Transportation to minimize both delay and crash frequency at rural intersections. This system was subsequently implemented at several intersections in Texas and its safety and operational benefits were evaluated. This report documents the findings and conclusions reached as a result of a three-year implementation project. The Detection-Control System was installed at each of eight intersections in Texas during the three-year period. Five of the intersections were suitable for a before-after study of safety and operational data. An evaluation of the before-after data indicated that the Detection-Control System was able to reduce delay by 14 percent, stop frequency by 9 percent, red-light violations by 58 percent, heavy-vehicle red-light violations by 80 percent, and severe crash frequency by 39 percent.

Book Development of a Second Generation Detection control System for Safer Operation of High Speed Signalized Intersections

Download or read book Development of a Second Generation Detection control System for Safer Operation of High Speed Signalized Intersections written by Karl H. Zimmerman and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This Innovations Deserving Exploratory Analysis project improved and evaluated a detection-control system (D-CS) for enhanced traffic safety at high speed signalized intersections. A literature review was conducted to identify potential enhancements to the D-CS control algorithm required to create the "second generation" D-CS algorithm. The needed enhancements included dilemma zone protection based on vehicle size, real-time dilemma zone changes, coordination, and real-time measures of effectiveness reporting. After selecting the most feasible enhancements, the control algorithm was modified and tested in the laboratory. Based on laboratory test results and refinements, a "second generation" D-CS control algorithm was developed capable of providing dilemma zone protection specific to vehicle type using a modified system to prevent max out during "Stage 2" operation.

Book Development and Use of a Computer Simulation Model for the Evaluation of Design and Control Alternatives for Intersections of Minor Roads with Multi lane Rural Highways

Download or read book Development and Use of a Computer Simulation Model for the Evaluation of Design and Control Alternatives for Intersections of Minor Roads with Multi lane Rural Highways written by Ahmed Essam Radwan and published by . This book was released on 1979 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Field Evaluation of Detection control System

Download or read book Field Evaluation of Detection control System written by Dan R. Middleton and published by . This book was released on 2015 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Evaluation of Video Detection Systems and Development of Application Guidelines at Signalized Intersections

Download or read book Evaluation of Video Detection Systems and Development of Application Guidelines at Signalized Intersections written by PeiFeng Fu and published by . This book was released on 2010 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the results of a study on evaluating three major video imaging vehicle detection systems (VIVDS) currently deployed in Nevada's urban areas. The report first provides a brief review of the features and functions of some major VIVDSs. The evaluation was based on videos collected at selected intersections in both Northern Nevada and Southern Nevada. The dataset included a total of 10 intersections consisting of 30 intersection approaches and about 48 hours of video for each approach. These videos were directly recorded with detection overlays from the VIVDSs at the sites. The detection accuracy was later verified manually by watching video playbacks in the lab. The performance of the VIVDS was assessed based on the accuracy level, taking into account the total missed and false detections. Missed and false detections were the two major sources of error considered in this study. Specific detection errors and possible causes were discussed for each site. Recommendations were provided for potentially reducing video detection errors. A set of guidelines were also provided for improving VIVDS' performance at existing intersections or future deployments.

Book Rural Intersection Conflict Warning System Evaluation and Design Investigation

Download or read book Rural Intersection Conflict Warning System Evaluation and Design Investigation written by Disi Tian and published by . This book was released on 2018 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Rural Intersection Collision Warning System (i.e., RICWS) has been deployed across the state of Minnesota to provide real-time traffic information to motorists to assist them with identifying sufficient vehicle gaps at thru-STOP intersections. However, since its implementation, a number of complaints have been received from local road users in regard to the signs. To identify the human factors issues with the current RICWS sign and to propose safe and efficient alternatives to its use, multiple rounds of usability tests were conducted with Minnesota county engineers and local road users to assist iterative design modifications as well as evaluate the effectives of each sign’s ability to accurately convey information regarding each of its three states. Three alternative design options were developed and tested along with the original RICWS sign via a driving simulator. A total of 120 participants, including novice teenage drivers (16-18 years old), middle-aged drivers (35-50 years old) and older drivers (65-77 years old), were recruited and were then asked to drive through a sequence of rural thruSTOP controlled intersections, with and without the intervention. The objectives were to evaluate the safety effectiveness and efficiency of different RICWS sign options to promote safe gap acceptance at different types of rural intersections (i.e., varying levels of mainstream traffic volume and intersection visibility). The research findings revealed an overall safety benefit of the intervention; however, potential risks were also identified associated with its deployment. It was also observed that drivers’ perceptions did not all match their actual driving behaviors.

Book Vehicle Detector Placement for High speed Isolated Traffic actuated Intersection Control Final Report Prepared for Federal Highway Administration Offices of Research and Development

Download or read book Vehicle Detector Placement for High speed Isolated Traffic actuated Intersection Control Final Report Prepared for Federal Highway Administration Offices of Research and Development written by and published by . This book was released on 1977 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study was undertaken to improve understanding of how to place vehicle detectors at high-speed (at least 35 mph), isolated, traffic-actuated intersections, and how to test and evaluate alternative detector/controller configurations for intersection traffic safety and efficiency.

Book Annual Report

Download or read book Annual Report written by University of Minnesota. Intelligent Transportation Systems Institute and published by . This book was released on 1999 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Public Roads

Download or read book Public Roads written by and published by . This book was released on 1984 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Traffic Control Systems Handbook

Download or read book Traffic Control Systems Handbook written by and published by . This book was released on 1976 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook, which was developed in recognition of the need for the compilation and dissemination of information on advanced traffic control systems, presents the basic principles for the planning, design, and implementation of such systems for urban streets and freeways. The presentation concept and organization of this handbook is developed from the viewpoint of systems engineering. Traffic control studies are described, and traffic control and surveillance concepts are reviewed. Hardware components are outlined, and computer concepts, and communication concepts are stated. Local and central controllers are described, as well as display, television and driver information systems. Available systems technology and candidate system definition, evaluation and implementation are also covered. The management of traffic control systems is discussed.

Book Highway Safety Design and Operations Guide 1997

Download or read book Highway Safety Design and Operations Guide 1997 written by and published by AASHTO. This book was released on 1997 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: A replacement to the publication entitled 'Highway design and operational practices related to highway safety', also known as 'The Yellow Book', and most recently published in 1974.

Book New Detection System for Rural Signalized Intersections

Download or read book New Detection System for Rural Signalized Intersections written by James A. Bonneson and published by . This book was released on 2004 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: