详情

Improving and Communicating Speed Management Practices

项目名称：	Improving and Communicating Speed Management Practices
摘要：	Speed limits are among the most visible and routinely enforced traffic control devices motorists encounter in their everyday driving. They are also associated with safety in a broad range of forums, from neighborhood residents concerned with their children's safety to national safety agencies calling into question the rationale for speed limit setting procedures used by the vast majority of engineering practitioners. Given this high degree of exposure and scrutiny, speed limits – and the practices and procedures used to develop them, inform drivers, and help enforcement of them – must be appropriate for their environment, defensible from an engineering and legal perspective, and comprehensible to the full range of mobility and safety stakeholders. In short, speed limits are a highly complex engineering, human factors, and political issue belied by the simplicity of a black-on-white, two-digit regulatory sign. This research work plan is designed to increase the profession’s understanding of the fundamental relationships between posted and operating speed, develop consistent procedures for the establishment of posted speed limits and the use of technologies to increase driver awareness and comprehension, and provide content to support external and internal TxDOT dialog about speed limits and their development for all roadway environments. Historical procedures for posted speed limit setting based on 85th percentile speed will be leveraged for their utility, where appropriate, but revised to current practice based on sensitivity to roadway characteristics and driving environment context.
状态：	Active
资金：	446016
资助组织：	Texas Department of Transportation<==>Federal Highway Administration
项目负责人：	Pridgen, Shelley
执行机构：	Texas A&M Transportation Institute, College Station
开始时间：	20191220
预计完成日期：	20211031
主题领域：	Education and Training；Highways；Operations and Traffic Management；Safety and Human Factors