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Cable Guardrail.
| 题名： | Cable Guardrail. |
| 作者： | Outcalt-W. |
| 关键词： | *Cables-; *Drifting-snow; *Guardrails-.;Accidents-; Repairs-; Transportation-safety; Tensioned-; Systems-evaluations; Maintenance-; Performance-evaluation; Site-selection; Installation-; Recommendations-; Colorado-. |
| 摘要： | In areas with a snow drifting problem, guardrails can act like snow fences and cause snow to drift across the highway. Cable guardrail systems that greatly reduce the problem have been used extensively in Scandinavia, Australia, and New Zealand with considerable success. Tensioned cable guardrail, which recently received NCHRP 350 approval and has NCHRP 350 certified end treatments, could be very useful in Colorado. Deflection, when the guardrail is struck by a vehicle, is limited. The systems are bidirectional, making them useful in narrow areas, both on shoulders and in highway medians. Maintenance is very simple, fast, and inexpensive. This study is monitoring the performance of cable guardrail installed in Colorado. The three-year study will gather accident, maintenance, and repair data from sites and build databases to evaluate the data. Severity of damage to the system when it is hit, including costs and time needed to make repairs will be recorded. Information from accident reports will be included to determine the extent of damage to the impacting vehicles and information on injuries to drivers and passengers. Current installations include: US-285 mp 241 right shoulder EB; US-285 mp 253 right shoulder WB; I-25 mp 250 median, SH-65 mp 32 44 both shoulders. Planned installations: I-25 mp 229 to mp 269, median, C-470 mp 20 to mp 24 median. Implementation: Data from existing sites can help determine appropriate applications for the use of the system. Experience has shown that cable guardrail is not suitable under certain circumstances. |
| 报告类型： | 科技报告 |
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