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Very Short Duration Work Zone Safety for Maintenance and Other Activities: A Synthesis of Highway Practice.
| 题名： | Very Short Duration Work Zone Safety for Maintenance and Other Activities: A Synthesis of Highway Practice. |
| 作者： | Theiss, L.; Ullman, G. L. |
| 关键词： | Highway research programs, Work zone safety, Synthesis, Very Short Duration Work Zone (VSDWZ), Maintenance (upkeep), Highway practices, National Cooperative Highway Research Program (NCHRP), Federal Highway Administration (FHWA) |
| 摘要： | Very short duration work zone (VSDWZ) activities are those activities not defined in the Manual on Uniform Traffic Control Devices (MUTCD) under short duration work zone or temporary traffic control (TTC) zones. These activities are usually 1 to 20 minutes long and include maintenance activities (e.g., performing temporary patching, picking up debris, or placing traffic count tubes) where TTC is not set up. VSDWZ activities reduce the exposure of workers to risk and the inconvenience to traffic that standard TTC zones would create. Current policies and practices in place at various agencies for VSDWZ activities vary substantially. The work-zone setup also varies by the type of maintenance or other very short duration activity and roadway classification (e.g., speed, AADT, and number of lanes). Historically, during those activities, a large number of worker fatalities have occurred. This synthesis, prepared by LuAnn Theiss and Gerald L. Ullman from Texas A&M Transportation Institute, identifies the current state of practice among state DOTs regarding selection and setup of VSDWZ. The report presents a literature review and results of a survey of state DOTs. Forty-one completed responses were received from the 50 agencies in the survey sample, a response rate of 82%. Case examples of four state DOTs are provided; these present an in-depth analysis of the VSDWZ policies of these states. The case example agencies have developed specific guidance on the topic for their jurisdictions. This synthesis report will be extremely useful to state agencies as they review their current practices regarding VSDWZ and assess what changes to their current procedures they can implement in their practices. Members of the topic panel are acknowledged on page iv. This synthesis is an immediately useful document that records the practices that were acceptable within the limitations of the knowledge available at the time of its preparation. As progress in research and practice continues, new knowledge will be added to that now at hand. |
| 报告类型： | 科技报告 |
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