In Service Evaluation Of A Detection Control System For High Speed Signalized Intersections
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In Service Evaluation Of A Detection Control System For High Speed Signalized Intersections
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Author : Karl Zimmerman
language : en
Publisher:
Release Date : 2005
In Service Evaluation Of A Detection Control System For High Speed Signalized Intersections written by Karl Zimmerman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Electronic traffic controls categories.
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.
Development Of A Second Generation Detection Control System For Safer Operation Of High Speed Signalized Intersections
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Author : Karl H. Zimmerman
language : en
Publisher:
Release Date : 2007
Development Of A Second Generation Detection Control System For Safer Operation Of High Speed Signalized Intersections written by Karl H. Zimmerman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Roads categories.
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.
Evaluation Of Detection And Signing Systems For High Speed Signalized Intersections
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Author : Prahlad D. Pant
language : en
Publisher:
Release Date : 1996
Evaluation Of Detection And Signing Systems For High Speed Signalized Intersections written by Prahlad D. Pant and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Electronic traffic controls categories.
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.
Evaluation Of Detector Placement For High Speed Approaches To Signalized Intersections
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Author : Dan R. Middleton
language : en
Publisher:
Release Date : 1997
Evaluation Of Detector Placement For High Speed Approaches To Signalized Intersections written by Dan R. Middleton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Detectors categories.
Evaluation Of Advance Warning Signals On High Speed Signalized Intersections
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Author : Peter T. Martin
language : en
Publisher:
Release Date : 2003
Evaluation Of Advance Warning Signals On High Speed Signalized Intersections written by Peter T. Martin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Electronic traffic controls categories.
Development And Evaluation Of A Detection Control System For Rural Intersections
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Author : James A. Bonneson
language : en
Publisher:
Release Date : 2001
Development And Evaluation Of A Detection Control System For Rural Intersections written by James A. Bonneson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Detectors categories.
Intelligent Detection Control System For Rural Signalized Intersections
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Author :
language : en
Publisher:
Release Date : 2002
Intelligent Detection Control System For Rural Signalized Intersections written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Detectors categories.
Vehicle Detector Placement For High Speed Isolated Traffic Actuated Intersection Control
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Author :
language : en
Publisher:
Release Date : 1977
Vehicle Detector Placement For High Speed Isolated Traffic Actuated Intersection Control written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Electronic traffic controls categories.
Vehicle Detector Placement For High Speed Isolated Traffic Actuated Intersection Control
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Author :
language : en
Publisher:
Release Date : 1977
Vehicle Detector Placement For High Speed Isolated Traffic Actuated Intersection Control written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with categories.
The Design And Evaluation Of An Advisory Speed Signal System For A High Speed Intersection Under Traffic Actuated Control
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Author : Charles E. Dare
language : en
Publisher:
Release Date : 1969
The Design And Evaluation Of An Advisory Speed Signal System For A High Speed Intersection Under Traffic Actuated Control written by Charles E. Dare and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with categories.
