Author: Scott Allen CoonerPublisher:
ISBN:
Category : Cables
Languages : en
Pages :
Book Description
Development of Guidelines for Cable Median Barrier Systems in Texas
Author: Scott Allen CoonerPublisher:
ISBN:
Category : Cables
Languages : en
Pages :
Book Description
Cable Median Barrier Guidelines
Author: Dean SickingPublisher:
ISBN:
Category : Express highways
Languages : en
Pages : 0
Book Description
Roadside Design Guide
Author: American Association of State Highway and Transportation Officials. Task Force for Roadside SafetyPublisher:
ISBN:
Category : Roads
Languages : en
Pages : 560
Book Description
Guidance for the Selection, Use, and Maintenance of Cable Barrier Systems
Author: Publisher:
ISBN: 9780309258425
Category : Roads
Languages : en
Pages : 134
Book Description
This report provides guidance for the selection, use, and maintenance of cable barrier systems. While cable barrier systems have been in use for more than 70 years, their use has been on the rise and is expected to continue in the future. The increase in use of cable barrier systems has been attributed to the success rate in keeping vehicles from crossing the median, reducing roadway departures, and decreasing impact severity. Due to advancements in cable barrier system technology, installation and repair costs are lower and cable barrier use has increased in varying roadway environments. Safety studies, although limited, have shown that cable barriers help reduce those median cross-over collisions that lead to some of the most severe head-on type crashes. This document will be of particular interest to design, maintenance, traffic, and safety engineering professionals.
Cable Median Barrier
Author: Paula J. HammondPublisher:
ISBN:
Category : Median strips
Languages : en
Pages : 94
Book Description
A Policy on Geometric Design of Highways and Streets, 2018
Author: Publisher:
ISBN: 9781523119592
Category : Highway engineering
Languages : en
Pages :
Book Description
Highway engineers, as designers, strive to meet the needs of highway users while maintaining the integrity of the environment. Unique combinations of design controls and constraints that are often conflicting call for unique design solutions. A Policy on Geometric Design of Highways and Streets provides guidance based on established practices that are supplemented by recent research. This document is also intended as a comprehensive reference manual to assist in administrative, planning, and educational efforts pertaining to design formulation
Guidance for the Selection, Use, and Maintenance of Cable Barrier Systems
Author: Publisher:
ISBN: 9780309258425
Category : Roads
Languages : en
Pages : 148
Book Description
This report provides guidance for the selection, use, and maintenance of cable barrier systems. While cable barrier systems have been in use for more than 70 years, their use has been on the rise and is expected to continue in the future. The increase in use of cable barrier systems has been attributed to the success rate in keeping vehicles from crossing the median, reducing roadway departures, and decreasing impact severity. Due to advancements in cable barrier system technology, installation and repair costs are lower and cable barrier use has increased in varying roadway environments. Safety studies, although limited, have shown that cable barriers help reduce those median cross-over collisions that lead to some of the most severe head-on type crashes. This document will be of particular interest to design, maintenance, traffic, and safety engineering professionals.
In-service Performance Evaluation and Installation Recommendations for Cable Median Barriers on Non-continuously Shielded, Divided-median Kansas Freeways
Author: Nathan DowlerPublisher:
ISBN:
Category :
Languages : en
Pages : 342
Book Description
The Kansas Department of Transportation (KDOT) installed 7.95 miles of cable median barrier (CMB) along K-10, K-96, and US-75 freeways in 2011 and 2012. In January 2020, KDOT funded a study to determine the in-service performance of its CMBs. In addition, KDOT sought to determine if it was cost-effective to modify guidelines for installing median barriers, which were based on annual daily traffic and median width. Researchers reviewed every crash within approximately 1⁄4 mile of a CMB installation and extracted crashes which involved a CMB impact. Researchers analyzed the critical details of each CMB crash, with particular emphasis on penetrations, in which a vehicle passed from the impact side to the opposite side of the barrier. In two penetration crashes, the vehicle completely traversed the median and encroached into the opposing lanes (CME), and one impacted an oncoming vehicle (CMC). Although the dataset was small, penetration and rollover rates were lower than other state DOT averages. Overall, the performance of the KDOT CMB was deemed acceptable and comparable to other states. Researchers investigated the cost-effectiveness of installing CMBs based on the frequency of critical crash events. A detailed examination of 16,721 crashes on non-continuously shielded, divided-median Kansas freeways from 2014 to 2018 was undertaken, which focused on median departures, crashes which reached the median centerline, CMEs, and CMCs. Benefit-to-cost ratios were calculated for various median widths, roadways, and traffic volume conditions. Previous median barrier warrant guidelines were determined to still be cost-effective and changes to KDOT policy were not recommended. A review of all off-road crashes which did not enter the median was conducted to examine any trends or characteristics between contributing factors or fixed objects struck. The relationship between crash cause and traffic volume was explored, identifying the traffic volume range at which each contributing factor was most prevalent. A disproportionate number of severe crashes following contact with bridge piers was observed, and recommendations were made for further analysis.
A Predictive Median Barrier Warrant to Reduce Cross-median Crashes
Author: Andrew W. OomsDesign Guide for Addressing Nonrecurrent Congestion
Author: Ingrid B. Potts, Douglas W. Harwood, Jessica M. Hutton, Chris A. Fees, Karin M. Bauer, Lindsay M. Lucas, Christopher Kinzel, Robert J. Frazier, Transportation Research BoardPublisher: Transportation Research Board
ISBN: 0309274435
Category :
Languages : en
Pages : 229
Book Description
This report from the second Strategic Highway Research Program (SHRP 2), which is administered by the Transportation Research Board of the National Academies, catalogs highway design treatments that can be used to reduce nonrecurrent congestion and improve the reliability of urban and rural freeways.