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In-Service Performance of Traffic Barriers. National Cooperative Highway Research Program (NCHRP) Report 490.
| 题名： | In-Service Performance of Traffic Barriers. National Cooperative Highway Research Program (NCHRP) Report 490. |
| 作者： | Ray-M.H.; Weir-J.; Hope-J. |
| 关键词： | *Barriers-; *Guardrails-; *Performance-evaluation.;Guardrail-impact-tests; Vehicle-barrier-collisions; Connecticut-; Iowa-; North-Carolina; Highway-safety. |
| 摘要： | The purpose of this report is to present results of a research project on in-service performance evaluation of common traffic barriers. A survey and literature review were first performed to identify past and current in-service evaluation studies and determine what methods had been effective previously. Then, an in-service evaluation was planned and performed in portions of the states of Connecticut, Iowa, and North Carolina. The in-service performance of common barriers and terminals was examined by collected crash, maintenance, and inventory information in the three data collection areas. These official sources of information were supplemented with visits to the collision sites, generally within a day or two of the collision, to make measurements of the damaged barrier and document the collision scope using photographs. A procedures manual for planning and performing in-service evaluations of roadside hardware was then developed based on the methods used and lessons learned in the evaluation study. This manual was used as a guide for an in-service evaluation project performed in Washington State by a different research team and modified based on their experiences and recommendations. |
| 报告类型： | 科技报告 |
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