Author: Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 251
Book Description
Design and Evaluation of a Low-tension Cable Guardrail End Terminal System
Author: Design and Evaluation of a Low-tension Cable Median Barrier System
Author: Continued Development of a Non-proprietary, High-tension, Cable End Terminal System
Author: Jennifer D. SchmidtPublisher:
ISBN:
Category : Median strips
Languages : en
Pages : 80
Book Description
"A non-proprietary, cable guardrail system is currently under development for the Midwest States Pooled Fund Program. A cable guardrail end terminal was necessary to accompany the cable guardrail system. The objective of this research project was to develop design recommendations for the cable end terminal. Bogie testing that was previously completed on a design concept indicated delayed cable release, which was an undesired performance that led to vehicle instabilities. Several design changes were recommended for better end terminal performance and to reflect the changes made to the cable median barrier. . . . Simulations of various line post designs found that the MWP and weakened MWP have lower forces and energies during impact than the S3x5.7 posts used in previous three-cable end terminals. This finding would suggest improved performance with respect to vehicle override and instability. However, vehicle simulations with multiple line posts impacted were inconclusive. Further design modifications, evaluation, and testing are recommended" (page i).
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
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
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.
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.
What's Up Doc?
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 162
Book Description