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Evaluation of the Safety Edge(sub SM) Application in Oregon.
| 题名： | Evaluation of the Safety Edge(sub SM) Application in Oregon. |
| 关键词： | application；evaluation；safety；specification；documents；bullet；mailbox；research；straight；project |
| 摘要： | This report summarizes a recent assessment of the Safety Edge(sub SM) that was performed to determine the feasibility of using this pavement edge treatment on Oregon construction projects. The report includes a review of research that has been published about the performance of the Safety Edge (sub SM). The report also incorporates a state of practice review of the states currently using or considering the use of this treatment. Specifications, standard drawings, or technical documents developed by other agencies are included in the report appendix. ODOT performed one demonstration project and assessed the ease of use, time to train, and issues related to deploying the Safety Edge (sub SM) treatment in Oregon. It was found that the initial mounting of the shoe on the paving equipment was straightforward and could be done with limited training required. The site selected was free of guardrail and driveways, so the researchers could not assess functionality of the shoe at locations with obstructions. As a result of this research effort, the research team developed draft language for a sample Oregon specification for the Safety Edge (sub SM) as well as a Technical Bulletin that addresses key issues related to benefits, cost, deployment, and similar for the Safety Edge (sub SM). Though the Safety Edge (sub SM) will likely benefit most pavement projects, it should particularly be considered if the following conditions are present: (1) A history of run-off-the-road crashes; (2) Numerous sharp horizontal curves subjected to off-road tracking; (3) Locations subject to roadside erosion; or (4) Locations where vehicles can be expected to frequently exit and re-enter the active lane (i.e. rural mailbox clusters). It should be acknowledged that the guidance included in the Technical Bulletin as well as the details given in the draft specification are based on the findings of the current research effort. As projects begin to incorporate use of the Safety Edge (sub SM) and ODOT staff and contractors become more familiar with the application process, it is expected that the specific guidance may be modified. |
| 报告类型： | 科技报告 |
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