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Author : Patrick T. McCoy
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.3/5 (555 download)
Download or read book Advance Detection on High-speed Signalized Intersection Approaches written by Patrick T. McCoy and published by . This book was released on 2002 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Karl Zimmerman
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.3/5 (555 download)
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.
Author : Peter T. Martin
Publisher :
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.3/5 (555 download)
Download or read book Evaluation of Advance Warning Signals on High Speed Signalized Intersections written by Peter T. Martin and published by . This book was released on 2003 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Matthew L. Kruse
Publisher :
ISBN 13 :
Total Pages : 530 pages
Book Rating : 4.:/5 (469 download)
Download or read book Advance Detection at High-speed Signalized Intersections written by Matthew L. Kruse and published by . This book was released on 2001 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Prahlad D. Pant
Publisher :
ISBN 13 :
Total Pages : 248 pages
Book Rating : 4.3/5 (555 download)
Download or read book Evaluation of Detection and Signing Systems for High Speed Signalized Intersections written by Prahlad D. Pant and published by . This book was released on 1996 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of two dynamic signs that begin to flash a few seconds before the onset of the yellow interval and a static sign that flashes all the time were examined at tangent and curved approaches to rural, high speed signalized intersections. The dynamic signs included (a) a PTSWF (prepare to stop when flashing) sign, and (b) a FSSA (flashing symbolic signal ahead) sign with green, yellow, and red circles. The static sign was a CFSSA (continuously flashing symbolic signal ahead) sign with the three circles. The effects of these signs on vehicular speeds at different segments of the intersection approach including the dilemma zone were analyzed as were the vehicle conflict rates and the responses from the drivers' surveys.
Author : Dan R. Middleton
Publisher :
ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.3/5 (555 download)
Download or read book Evaluation of Detector Placement for High-speed Approaches to Signalized Intersections written by Dan R. Middleton and published by . This book was released on 1997 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ronald W. Eck
Publisher :
ISBN 13 :
Total Pages : 202 pages
Book Rating : 4.3/5 (91 download)
Download or read book Accident Countermeasures at High-speed Signalized Intersections written by Ronald W. Eck and published by . This book was released on 1984 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advance warning including flashing signs and strobe lights. Survey of traffic engineers at state and local agencies.
Author :
Publisher :
ISBN 13 :
Total Pages : 102 pages
Book Rating : 4.3/5 (555 download)
Download or read book Intelligent Detection-control System for Rural Signalized Intersections written by and published by . This book was released on 2002 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.:/5 (1 download)
Download or read book Placement of Detection Loops on High Speed Approaches to Traffic Signals written by and published by . This book was released on 2010 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report contains the results of the NC Department of Transportation research project Placement of Detection Loops on High Speed Approaches to Traffic Signals (HWY 2007-13). The goal of this project was to determine the best places to locate detectors on the approaches to high-speed signalized intersections and the best signal control strategy to employ in conjunction with those sensor placement ideas to minimize dilemma zone occurrences.
Author :
Publisher :
ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.3/5 (555 download)
Download or read book Guidelines for Detector Placement on High-speed Approaches to Signalized Intersections written by and published by . This book was released on 1997 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this research was to validate the new TxDOT procedures for loop detector placement on high-speed approaches to signalized intersections. The study approach involved conducting a field study at selected sites to compare the proposed new loop configuration to the existing configuration. The data analysis included investigating approach speeds to the intersection, driver actions in response to a yellow indication, and vehicle location at the onset of yellow. The Results from the field study revealed that the new loop configuration is as good as, and in some cases better than the old loop configuration. Because the new loop configuration can detect vehicles further upstream from the intersection (at the beginning of the dilemma zone), it results in fewer vehicles being caught in the dilemma zone at the onset of yellow. Also, because the new loop configuration typically resulted in more vehicles running the yellow light instead of stopping, fewer rear-end accidents may result. In addition, the new loop configuration resulted in fewer vehicles running the red light, also a major cause of accidents.
Author : Prahlad D. Pant
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.3/5 (555 download)
Download or read book Dilemma Zone Protection and Signal Coordination at Closely-spaced High-speed Intersections written by Prahlad D. Pant and published by . This book was released on 2001 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: A feasibility study of dilemma zone problems, performed by collecting and analyzing traffic flow data at a high-speed signalized intersection, showed that the maximum green extension or cutback needed to get a vehicle out of the dilemma zone is generally no more than 2 seconds. If we scan all vehicles on a link just a few seconds before the beginning of a yellow interval, we may be able to extend or cut back the green interval so that the vehicles can avoid the dilemma zone. For each vehicle approaching an intersection on the link that is about to turn yellow, there is a time interval such that (a) the vehicle will be in the dilemma zone without green extension (or cutback) or (b) it will be in the dilemma zone when there are T seconds of extension (or cutback). So the task is to find the smallest nonnegative integer T that is not in any of these time intervals and extend (or cut back) the current interval by T seconds. This T can always be found and assuming there are no other restrictions, dilemma zones can be avoided and the extension (or cutback) is done at most once for each green interval. The simulation study, performed by modifying the source codes of NETSIM, showed that the signal timing generated by a bandwidth maximization program (PASSER-II) resulted in a lower number of vehicles in the dilemma zone than that generated by a delay minimization program (TRANSYT-7F). Additionally, the signal timing generated by the combination of the two programs, that is, by minimizing delay within the constraint of bandwidth maximization, resulted in an even lower number of vehicles in the dilemma zone than those generated by each program alone. The technique developed in this study can be implemented if the speeds and positions of all vehicles on the roadway can be recorded at small time intervals (e.g., 1 sec). Recommendations are made for implementing and testing the developed technique.
Author : James A. Bonneson
Publisher :
ISBN 13 :
Total Pages : 94 pages
Book Rating : 4.3/5 (91 download)
Download or read book Development and Evaluation of a Detection-control System for Rural Intersections written by James A. Bonneson and published by . This book was released on 2001 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.3/5 (555 download)
Download or read book Development of Advance Warning Systems for End-of-green Phase at High Speed Traffic Signals written by and published by . This book was released on 2004 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James A. Bonneson
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.3/5 (555 download)
Download or read book Video Detection for Intersection and Interchange Control written by James A. Bonneson and published by . This book was released on 2002 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Carroll J. Messer
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.3/5 (555 download)
Download or read book Design and Installation Guidelines for Advance Warning Systems for End-of-green Phase at High Speed Traffic Signals written by Carroll J. Messer and published by . This book was released on 2003 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daiheng Ni
Publisher : Springer Nature
ISBN 13 : 3030385493
Total Pages : 335 pages
Book Rating : 4.0/5 (33 download)
Download or read book Signalized Intersections written by Daiheng Ni and published by Springer Nature. This book was released on 2020-02-27 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook introduces the basics principles of intersection signalization including need studies, signal phasing, sequencing, timing, as well as more advanced topics such as detectors, controllers, actuated control schemes, and signal coordination. The book covers a variety of topics critical to the set up and operation of intersections controlled by traffic signals. Professor Ni imparts a basic understanding of how intersections work, what justifies intersection signalization, how to properly design phasing and timing plans for intersections, what is needed to run traffic-responsive signals, the workings of traffic controller cabinets, and how to set up signal coordination at multiple intersections—competencies essential to transportation professionals in charge of traffic operation at federal, state, and local levels. Aimed at students in transportation engineering programs with a focus on intersection signalization, the book is also ideal for researchers of traffic dynamics and municipal civil and transportation engineers.
Author :
Publisher :
ISBN 13 : 9780309160674
Total Pages : 193 pages
Book Rating : 4.1/5 (66 download)
Download or read book Traffic Signal Systems 2010 written by and published by . This book was released on 2010 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRR no. 2192 contains 18 papers that explore simulation-based optimization of the maximum green setting, wireless magnetometer vehicle detectors at signalized intersections, management of signalized arterial capacity, arterial signal coordination, crosstalk detection in loop detectors at signalized intersections, railroad-preempted intersections, and providing automated performance measures at signalized intersections with existing video detection equipment. This issue of the TRR also examines signal priority near a major bus terminal, traffic signal transition in coordinated meshed networks, equitable traffic signal timing plans, decision tree model to prioritize signalized intersections near highway-railroad crossings, advance-detection designs for high-speed intersection approaches, uncertainty and predictability of urban link travel time, cross-evaluation of optimized signal timing, robust signal timing for arterials under day-to-day demand variations, adaptive signal control, analytical models for protected/permitted left-turn capacity at signalized intersections with heavy traffic, and arterial performance measures with media access control readers.
