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Evaluation of a Variable Speed Limit System for Wet and Extreme Weather Conditions.
| 题名： | Evaluation of a Variable Speed Limit System for Wet and Extreme Weather Conditions. |
| 关键词： | extreme；conditions；evaluation；vari；aria；speed；limit；friction；able；literature |
| 摘要： | Weather presents considerable challenges to the highway system, both in terms of safety and operations. From a safety standpoint, weather (i.e. precipitation in the form of rain, snow or ice) reduces pavement friction, thus increasing the potential for crashes when vehicles are traveling too fast for the conditions. Under these circumstances, the posted speed limit at a location may no longer be safe and appropriate. From an operations standpoint, inclement weather could have considerable impacts on the capacity of the highway system and the efficiency of using the system by motorists. Consequently, new approaches are necessary to influence motorists behavior in regards to speed selection when inclement weather presents the potential for reduced pavement friction at a given location. Among these approaches is the use of Variable Speed Limit (VSL) systems. This document presents the results of initial work completed in the development of such a system. The work completed included a literature review related to different aspects and types of VSL systems, as well as a review of sensor systems capable of providing roadway grip/friction measurements. The work also developed a Concept of Operations and Requirements for the prospective VSL system, with detailed information provided in the Appendix. |
| 报告类型： | 科技报告 |
相关文献
- Guidelines for the Use of Variable Speed Limit Systems in Wet Weather: FHWA Safety Program.
- Effects of weather controlled speed limits on driver behaviour on a two-lane road.
- Variable Speed Limit (VSL) - Best Management Practice.
- Impacts of the I-77 Variable Speed Limit System on Speed and Crash Characteristics During Low Visibility Conditions.
- EFFECTS OF WEATHER-CONTROLLED VARIABLE SPEED LIMITS AND WARNING SIGNS ON DRIVER BEHAVIOR.
- Variable Speed Limit (VSL) - Best Management Practice, Summary Report.
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