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MASH Evaluation of TxDOT Roadside Safety Features - Phase 1
| 题名： | MASH Evaluation of TxDOT Roadside Safety Features - Phase 1 |
| 作者： | Bligh, R. P.; Menges, W. L.; Kuhn, D. L. |
| 关键词： | Turnabout lane##Asphalt concrete pavement##U-turn##Frontage road##Diamond interchange##Ramp terminals##Interchange safety##Intersection countermeasures##Signal operations##Evaluation##Roadside safety##Bridge rail##American Association of State Highway and Transportation Officials (AASHTO)##Federal Highway Administration (FHWA)##Texas Department of Transportation (TxDOT)## |
| 摘要： | In 2009, the American Association of State Highway and Transportation Officials (AASHTO) published the Manual for Assessing Safety Hardware (MASH), which supersedes the previous crash test and evaluation guidelines. A MASH implementation agreement was jointly developed and adopted by the Federal Highway Administration (FHWA) and AASHTO. It establishes implementation dates for different categories of roadside safety features. Texas Department of Transportation (TxDOT), Bridge, Design, Maintenance, and Traffic Operations Divisions reviewed their standards for roadside safety devices and identified those devices that require testing and evaluation to assess MASH compliance. Under this project, a total of 33 roadside safety systems will be crash tested in accordance with MASH criteria in three phases over a three-year period. In Phase I, the following devices were crash tested: 36-inch vertical parapet bridge rail, 1-inch asphalt concrete pavement lateral support for concrete median barrier, pinning pattern for precast concrete barrier on concrete, single and dual embedded wood post sign support systems, pedestal poles with flashing beacons with and without solar assembly, double mailbox system on TxDOT Type 3 foundation and winged channel support, double mailbox system on TxDOT Type 2 foundation and thin walled galvanized tube support, and multi-mailbox system on TxDOT Type 1 foundation and thin walled galvanized tube support. This report documents the crash testing and evaluation of these devices in accordance with MASH criteria. The critical tests were identified and performed to assess MASH compliance. |
| 总页数： | 350 |
| 报告类型： | 科技报告 |
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