Best Practices for Road Weather Management: Version 2.0   [open pdf - 2MB]

"There is a perception that transportation managers can do little about weather. However, three types of mitigation measures may be employed in response to environmental threats: advisory, control, and treatment strategies. Advisory strategies provide information on prevailing and predicted conditions to both transportation managers and motorists. Control strategies alter the state of roadway devices to permit or restrict traffic flow and regulate roadway capacity. Treatment strategies supply resources to roadways to minimize or eliminate weather impacts. Many treatment strategies involve coordination of traffic, maintenance, and emergency management agencies. These road weather management strategies are employed in response to various weather threats including fog, high winds, snow, rain, ice, flooding, tornadoes, hurricanes, and avalanches. This report contains 30 case studies of systems in 21 states that improve roadway operations under inclement weather conditions. Each case study has six sections including a general description of the system, system components, operational procedures, resulting transportation outcomes, implementation issues, as well as contact information and references. Appendix A presents an overview of environmental sensor technologies. Appendix B is an acronym list. Appendix C contains online resources, including 39 statewide road condition web sites. Appendix D tabulates hundreds of road weather publication titles, abstracts and sources."

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Public Domain
Retrieved From:
Lessons Learned Information Sharing (LLIS)
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