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Evaluation of a Modified Three Cable Guardrail Adjacent to Steep Slope.
| 题名： | Evaluation of a Modified Three Cable Guardrail Adjacent to Steep Slope. |
| 作者： | terpsma, r. j. polivka, k. a. sicking, d. l. rohde, j. r. reid, j. d. |
| 关键词： | highway safety, compliance testing, impact tests, pickup trucks, cable anchors, slopes, crash tests |
| 摘要： | The three cable guardrail system is most commonly used to protect motorists from roadside slopes. Due to the fact that the system is limited to sites where relatively large barrier displacement is acceptable, concern arises when the system must be placed close to steep roadside slopes. The objective of this study was to evaluate a three cable barrier system placed adjacent to 1.5H:1V slopes. The three cable system in this test utilized quarter-post spacing. In addition, the offset from the slope break point was 1,219mm (4 ft). One full-scale crash test, a 2,032-kg (4,481-lb) pickup truck impacting at a speed of 99.1 km/h (61.6 mph) and at an angle of 23.6 degrees, was conducted and reported in accordance with the requirements specified in the National Cooperative Highway Research Program (NCHRP) Report No. 350, 'Recommended Procedures for the Safety Performance Evaluation of Highway Features'. Based on the results and analysis of the full scale test, it was determined that the three cable guardrail system with quarter-post spacing and 1,219 mm (4 ft) offset from the slope break point performed adequately according to NCHRP Report No. 350 TL-3 requirements. / NOTE: Final Rept. 2002-2008. / Supplementary Notes: See also PB2006-101026. Sponsored by Nebraska State Dept. of Roads, Lincoln. Midwest State's Regional Pooled Fund Program and the Federal Highway Administration, Lincoln, NE. Nebraska Div. / Availability Note: Available on CD-ROM and in color paper copy only. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| 总页数： | u0817；104p |
| 报告类型： | 科技报告 |
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