Download or read book Quantifying the Benefits of Coordinated Actuated Traffic Signal Systems written by Byungkyu Park and published by . This book was released on 2010 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coordinated actuated traffic signal systems have been widely implemented for the past few decades because they provide better progression along the major corridors through proper coordination. However, little has been done to quantify the benefits that can be obtained from coordinated traffic signal systems. Most efforts reported in the literature focused on system performance estimated from simulation software as opposed to field studies. The purpose of this study was to quantify the benefits of coordinated actuated traffic signal systems by conducting an analysis of before-and-after data. The travel time on the coordinated arterials and the stopped delay on a few key approaches were selected as measures of effectiveness. Synchro, a macroscopic traffic signal timing evaluation and optimization software, was used to generate the coordinated actuated traffic signal timing plans for comparison purposes. In addition, the performance of an adaptive split feature, implemented within the coordinated actuated traffic signal system, was evaluated through a before-and-after study. The data showed an improvement in performance of the coordinated actuated system over the actuated isolated system (the before condition), including a 30 percent reduction in travel times on the coordinated corridor. There was a corresponding increase in stopped delay on non-coordinated approaches, but the addition of the adaptive split feature was able to reduce this delay by 40 percent at one site without impacting progression on the coordinated approaches. The study recommends that the Virginia Department of Transportation regional traffic engineers implement the coordinated actuated traffic signal system over the non-coordinated system and the adaptive split feature with the coordination to reduce delays on side street approaches. Further, a cost/benefit analysis indicated that the coordinated actuated traffic signal system has a benefit/cost ratio of 461.3 when compared to the non-coordinated actuated traffic signal system.

Download or read book Quantifying Benefits of Coordinated Actuated Traffic Signal Systems and Adaptive Split Feature written by Yin Chen and published by . This book was released on 2010 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quantifying Benefits of Traffic Signal Retiming written by Christopher M. Day and published by . This book was released on 2010-10-15 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Traffic Signal Timing Manual written by U.s. Department of Transportation and published by CreateSpace. This book was released on 2015-02-20 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report serves as a comprehensive guide to traffic signal timing and documents the tasks completed in association with its development. The focus of this document is on traffic signal control principles, practices, and procedures. It describes the relationship between traffic signal timing and transportation policy and addresses maintenance and operations of traffic signals. It represents a synthesis of traffic signal timing concepts and their application and focuses on the use of detection, related timing parameters, and resulting effects to users at the intersection. It discusses advanced topics briefly to raise awareness related to their use and application. The purpose of the Signal Timing Manual is to provide direction and guidance to managers, supervisors, and practitioners based on sound practice to proactively and comprehensively improve signal timing. The outcome of properly training staff and proactively operating and maintaining traffic signals is signal timing that reduces congestion and fuel consumption ultimately improving our quality of life and the air we breathe. This manual provides an easy-to-use concise, practical and modular guide on signal timing. The elements of signal timing from policy and funding considerations to timing plan development, assessment, and maintenance are covered in the manual. The manual is the culmination of research into practices across North America and serves as a reference for a range of practitioners, from those involved in the day to day management, operation and maintenance of traffic signals to those that plan, design, operate and maintain these systems.

Download or read book Analysis of Adaptive Signal Control Strategies in Urban Corridors written by Ahmed Shawky Abdel-Rahim and published by . This book was released on 1998 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Innovative Coordination Methods Utilizing ITS Technology for Traffic Signals written by Steven P. Venglar and published by . This book was released on 1997 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project report summaries research and implementation of signal system communications and improved signal control. An investigation of available signal system communication technologies and media identified spread spectrum radio as an effective, inexpensive, and flexible alternative. As part of the project, a radio communications system was selected and installed at five signalized intersections along US 281 in Falfurrias, Texas. Closed loop system software was then installed to coordinate the previously isolated, actuated intersections. The end result was improved traffic control, improved traffic flow, and remote system monitoring for those responsible for signal maintenance. A second aspect of the project focused on developing real-time control functionality that would make use of the communications system. The Texas Department of Transportation's Dynamic Arterial Responsive Traffic System (DARTS) Specification provided a public domain, real-time signal coordination algorithm that suited this purpose. Simulators were developed by the Texas Transportation Institute to determine the effectiveness of DARTS installed in Falfurrias. Results show an average 18 percent reduction in travel time on US 281 and indicate the potential for DARTS to reduce arterial travel time. As an added project benefit, the simulation software developed for this project can be used to determine DARTS applicability at any given field site, and it can be used to train personnel in DARTS use and calibration.

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.

Download or read book Sustainable Civil Engineering Practices written by Varinder S. Kanwar and published by Springer Nature. This book was released on 2020-04-30 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select proceedings of the International Conference on Sustainable Civil Engineering Practices (ICSCEP 2019). It covers several important aspects of sustainable civil engineering practices dealing with effective waste and material management, natural resources, industrial products, energy, food, transportation and shelter, while conserving and protecting the environmental quality and the natural resource base essential for future development. The book also discusses engineering solutions to sustainable development and green design issues. Special emphasis is given on qualitative guidelines for generation, treatment, handling, transport, disposal and recycling of wastes. The book is intended as a practice-oriented reference guide for researchers and practitioners, and will be useful for all working in sustainable civil engineering related fields.

Download or read book Improved Traffic Signal Coordination Strategies for Actuated Control written by Carroll J. Messer and published by . This book was released on 1996 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents research conducted to develop better strategies to use with traffic actuated control in coordinated signal systems. Recommendations are presented on more efficient strategies for coordination using actuated control. Representative arterial traffic control problems were modeled into a statistical testbed using TRAF-NETSIM. A set of scenarios covering a range of arterial geometry, traffic volumes and traffic actuated control settings were tested and evaluated. PASSER II-90 was used to develop base signal timing plans. Chapter One describes the various objectives that were intended to be achieved by this research. It also discusses signal coordination strategies for actuated control. Chapter Two presents the background information and various traffic engineering simulation models available for use in this study. Chapters Three and Four explain the study methodology adopted for this research and the results obtained for the various study scenarios, respectively. Chapter Five presents the conclusions and recommendations of the research.

Download or read book Transportation Research Record written by and published by . This book was released on 1999 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Traffic Signal Control Equipment written by Peter J. Yauch and published by Transportation Research Board. This book was released on 1990 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis will be of interest to traffic engineers and others interested in the capabilities of currently available equipment for traffic signal control. Information is provided on functions and operations of controller assemblies, displays, detectors, communications, and computerized system masters. Traffic engineers need to know the functional capabilities of the various types of signal control equipment in order to select appropriate equipment for a specific application. This report of the Transportation Research Board describes the functions of each type of equipment and how it works, and gives advantages, disadvantages, and limitations.

Download or read book Coordination of Actuated Controllers on Traffic Control Systems written by Edmond Chin-Ping Chang and published by . This book was released on 1994 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measuring the Benefits of Adaptive Traffic Signal Control written by Ali Goudarz Eghtedari and published by . This book was released on 2005 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Public Roads written by and published by . This book was released on 1999 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Traffic Signal Systems written by and published by . This book was released on 2008 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's Transportation Research Record: Journal of the Transportation Research Board, No. 2080 includes 13 papers that explore the preempt trap of the highway-railway interface, fully actuated versus nonactuated coordinated phases, effectiveness of lead-lag phasing on progression bandwidth, high-resolution gueue discharge and the effect on signal phasing, integration of real-time pedestrian performance measures into traffic signal systems, microsimulation of split-cycle offset optimization technique and coordinated actuated traffic control, and piecewise optimum delay estimation for improved signal control. This issue of the TRR also examines microsimulation of traffic operations at intersections in malfunction flash mode, variable maximum green time to improve rural traffic signal operations, stopping behavior at urban signalized intersections, traffic controller performance of coordinated actuated signal systems during time-of-day transition, unacceptable video detector performance for dilemma zone protection, and robust synchronization of arterial actuated signals.

Download or read book The improved effectiveness of traffic signal systems written by and published by . This book was released on 1975 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Improving Performance of Coordinated Signal Control Systems Using Signal and Loop Data written by Meng Li (Writer on traffic signs and signals) and published by . This book was released on 2010 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: