Guidance for the Selection, Use, and Maintenance of Cable Barrier Systems (2012) / Chapter Skim
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103 Chapter 6 Guidelines for Cable Barriers 103 6.1 Warrants 103 6.2 Structural Details and Crash Performance Characteristics 104 6.3 Cable Barrier Guidelines 112 Chapter 7 Summary and Conclusions 113 7.1 Research Findings 114 7.2 Development of Guidance, Guidelines, and Procedures 114 7.3 Future Research Needs 116 References and Bibliography 119 Glossary 123 Appendixes Note: Photographs, figures, and tables in this report may have been converted from color to grayscale for printing. The electronic version of the report (posted on the Web at www.trb.org)
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1 Cable barriers are longitudinal roadside devices used to contain and/or redirect errant vehicles that depart the roadways. These barriers gradually redirect or arrest an impacting vehicle by stretching of the cables, minimizing forces on the vehicle and its occupants.
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2 Guidance for the Selection, Use, and Maintenance of Cable Barrier Systems Figure 1.1. Typical generic, 3-cable, low-tension median cable barrier installation.
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Introduction 3 factors included the terrain geometry and shape, speeds and angles of the vehicles as they leave the road, lateral placement of the barrier, barrier system configuration (heights of cables) , vehicle type (front geometry and mass)
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4 Guidance for the Selection, Use, and Maintenance of Cable Barrier Systems panel as possible topics for more detailed study. The findings of the research completed under Tasks 1 and 2 and the recommendations for more detailed research were summarized in the interim report.
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Introduction 5 1.2 Report Organization This report is organized into seven chapters as follows: • Chapter 1 -- Introduction • Chapter 2 -- Literature Review • Chapter 3 -- Cable Barrier Current Practices • Chapter 4 -- Descriptions of Available Cable Barriers • Chapter 5 -- Analyses and Results • Chapter 6 -- Guidelines for Cable Barriers • Chapter 7 -- Summary and Conclusions The contractors' final report also includes several appendices to provide details relative to the cable median barrier systems studied, approaches employed, detailed results, and similar materials. Appendix E is included in this report.
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