Author: Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 0
Book Description
Design and Evaluation of a Low-tension Cable Median Barrier System
Author: Design and Evaluation of a Low-tension Cable Guardrail End Terminal System
Author: Design and Evaluation of High-tension Cable Median Barrier Hardware
Author: Design and Evaluation of a High-tension Cable Median Barrier Attachment
Author: Design and Evaluation of High-tension Cable Median Barrier Attachment
Author: Benjamin J. DickeyPublisher:
ISBN:
Category : Roads
Languages : en
Pages : 221
Book Description
Alternative Design of Low-tension Cable Barrier Adjacent to Steep Slopes
Author: Robert W. BielenbergPublisher:
ISBN:
Category : Roads
Languages : en
Pages : 124
Book Description
In the early 2000s, MwRSF conducted full-scale crash testing on low-tension cable barrier systems installed adjacent to 1.5H:1V slopes. A design was successfully tested according to NCHRP Report 350 criteria, but the tested and approved configuration utilized a 4-ft (1.2 m) post spacing and a 4-ft (1.2 m) offset from the slope break point (SBP). Therefore, NDOT funded this research study to investigate if revisions to the low-tension cable barrier system could be identified which were likely to satisfy MASH requirements and which would be more cost-effective. This research study was conducted to investigate alternative low-tension cable barrier designs and configurations which would be likely to satisfy MASH TL-3 impact conditions and which would improve cost-effectiveness and/or usability for NDOT. Test nos. LTCB-1 through LTCB-5 were conducted on S3x5.7 steel posts at varying offset distances from a 1.8H:1V slope. Test no. LTCB-6 was conducted to evaluate the propensity for S3x5.7 posts to penetrate a small car test vehicle's floor pan, and tearing was observed. Subsequent component tests of an HSS3x2x1/8 tubular post alternative in development for use with high-tension cable median barrier systems was found to provide acceptable performance while mitigating floor pan tearing. Computer simulations were performed to investigate alternative barrier configurations. Various combinations of post spacing, barrier offset, and cable heights were evaluated. It was determined that systems with 3-ft (0.9-m) offset from the slope with 4-ft (1.2-m) post spacing, or 4-ft (1.2-m) offset from the slope with 6-ft (1.8-m) post spacing, may perform acceptably according to MASH TL-3 test designation no. 3-11.
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.
Evaluation of the New York Low-tension Three-cable Barrier on Curved Alignment
Author: Tyler L. SchmidtPublisher:
ISBN:
Category : Roads
Languages : en
Pages : 287
Book Description
Results of three full-scale crash tests performed on the New York Department of Transportation's curved, low-tension, three-cable barrier system utilizing the MASH test level 3 safety performance criteria.
High Tension Cable Median Barrier Safety Effectiveness Evaluation
Author: Richard StormPublisher:
ISBN:
Category : Roads
Languages : en
Pages : 0
Book Description
The objective of this study was to evaluate the change in crash frequency or severity of varying lateral offset distances of high-tension cable median barriers in Minnesota. Crash and traffic data from 2016 to present were conjoined with roadway cross-sectional data and high-tension cable barrier locations to perform cross-sectional analyses for interstate segments equal to or greater than 0.05-miles long. Negative binomial regression models were estimated and used to develop crash modification factors (CMFs) for the following crash types: total crashes, target crashes, and barrier crashes. In addition to evaluating the impact of lateral offset, a naïve before-after evaluation was completed to quantify the impact of installing high-tension cable barrier.
Development of Guidelines for Cable Median Barrier Systems in Texas
Author: Scott Allen CoonerPublisher:
ISBN:
Category : Cables
Languages : en
Pages :
Book Description