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Safety Performance Evaluation of Posts for Use in a New Short Radius Guardrail for Intersecting Roadways

项目名称：	Safety Performance Evaluation of Posts for Use in a New Short Radius Guardrail for Intersecting Roadways
摘要：	Guardrail systems used along roadways are intended to redirect impacting vehicle or in the case of short-radius guardrail, capture the vehicle at certain impact points. Kinetic energy is dissipated during any impact event through the deformation of the rail and posts and post rotation through the soil. This dissipated energy reduces the risk of injury to the vehicle's occupants. Previous development of a short radius system has shown significant improvement over the existing NCHRP 230-compliant system. Unfortunately, the system length and backside space requirements made the system impractical to use in most real-world applications. In addition, any necessary improvements to help the system meet the current safety performance criteria would only further increase the system length. Therefore, a need exists to develop a new barrier system that can be used near intersecting roadways, driveways, and streets that would meet the MASH TL-3 safety performance criteria. The current project of developing an impact attenuation system (short radius system) for intersection roadways has funding to conduct background research on previous short-radius designs and for concept development. However, further research is needed to evaluate different post sizes and types that could potentially be utilized during concept development. Therefore, this project seeks to supplement the concept development of a new short-radius system for intersecting roadways.
状态：	Completed
资金：	52500.00
资助组织：	Research and Innovative Technology Administration
执行机构：	University of Nebraska, Lincoln
开始时间：	20120701
实际结束时间：	20131231
主题领域：	Design；Highways；Operations and Traffic Management；Safety and Human Factors