Best Practices for Road Weather Management
Version 3.0
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Acknowledgments
While many individuals deserve recognition, the authors want to particularly acknowledge all the staff at the participating state departments of transportation who provided materials and were generous with their time and expertise. Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of the Federal Highway Administration.
Notice
This document is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The U.S. Government assumes no liability for the use of the information contained in this document.
The U.S. Government does not endorse products or manufacturers. Trademarks or manufacturers’ names appear in this report only because they are considered essential to the objective of the document.
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Table of Contents
Technical Report Documentation Page
Alabama DOT Low Visibility Warning System
Alaska DOT&PF Temperature Data Probe Program
Arizona DOT DUST Warning System
California DOT Fog Detection and Warning System
California DOT Icy Curve Warning System
Colorado DOT One Pass Clearing Operations
Colorado DOT Variable Speed Management System
Florida DOT Bridge Wind Speed Alerting System
Idaho TD Winter Maintenance Performance System
Iowa DOT WeatherView Road Weather Traveler Information System
Kansas City Scout Advanced Traffic Management System
Kansas DOT Road Weather Information for Travelers System
Maryland DOT Emergency Truck Parking Portal
Michigan DOT Measurement of Regain Time
Minnesota DOT I-35W Smart Lanes: Active Traffic Management
Montana DOT Equipment Vehicle Management System
Montana DOT Traveler Information System
New Mexico DOT Dust Control System
Pennsylvania DOT Interstate Restriction System
South Carolina DOT Hurricane Traffic Evacuation Operations
South Dakota DOT Maintenance Decision Support System
Tennessee DOT Low Visibility Warning System
Texas DOT High Water Detection System
Texas DOT Pump Station Monitoring System
Utah DOT Traveler Information Weather
Vermont Agency of Transportation: Transportation Operations Center
List of Appendices
List of Figures
Figure AL-1 Screen shot of low visibility warning system
Figure AK-1 Thermistor string and temperature probe casing
Figure AK-2 Boring hole for temperature probe
Figure AK-3 Top sensor on a wire lead
Figure AK-4 Diagram on the vertical thermistor spacing
Figure AK-5 Example of a posted weight restriction
Figure AK-6 Areas and corridors of Alaska with TDP site
Figure AK-7 Anchorage-Homer corridor with available TDP sites
Figure AZ-1 Visibility sensor in ADOT DUST warning system
Figure AZ-2 Dynamic message sign with warning message
Figure CA-2 Road weather information system at Fredonyer East ICWSs
Figure CA-3 Schematic of Fredonyer Pass and Icy Curve Warning System
Figure CO-1 Truck with 14 ft. wide front plow
Figure CO-2 Tow plow being loaded with salt
Figure CO-3 RWIS Snowmass Canyon
Figure CO-4 Alert of wet roads
Figure FL-1 FDOT bridge wind speed monitor installation
Figure ID-1 RWIS installation at Goose Creek Summit
Figure IA-1 Example screen shots from the Iowa DOT salt use dashboard
Figure IA-2 WeatherView website showing RWIS and AWOS site locations
Figure KC-1 Kansas City Scout's ATMS integrated with weather information
Figure MD-1 Maryland's emergency truck parking portal
Figure MI-1 Speed sensor apparatus to determine regain time
Figure MN-1 ATM signals on I-35W
Figure MN-2 Possible display messages above traffic lanes
Figure MN-3 Example of display of intelligent lane control signals during an incident
Figure MN-4 Display of advisory speed limits on DMS as it relates to freeway speeds
Figure MN-5 Static sign for dynamic shoulder lane
Figure MN-6 Striping and signing with PDSL closed.
Figure MN-7 Striping and signing with PDSL open
Figure MT-1 Montana DOT EVMS main application window
Figure MT-2 Components of traveler information system
Figure NM-1 Poor visibility of I-10 due to dust storm
Figure NM-2 La Playa I-10 RWIS mile post 12
Figure PA-1 Interstate restriction flow chart
Figure SC-1 Aerial view of I-26 near Columbia, SC where reversal is terminated
Figure SD-1 Surface conditions predicted by MDSS closely match actual road conditions
Figure TX-1 Public Internet display of TxDOT-San Antonio high water detection systems
Figure TX-2 Storm water pump station
Figure UT-1 Weather impact graphic from March 1, 2012
Figure VT-1 Traffic operations center
Figure VT-2 Traffic operations center communications specialist
Figure VT-3 Traffic operations center fiber optic project manager
List of Tables
Table AL-1 Low Visibility Warning System Strategies
Table TN-1 Advisory and Control Strategies for Various Road Conditions
U.S. Department of Transportation
Federal Highway Administration
Office of Operations
1200 New Jersey Ave., SE
Washington, DC 20590
FHWA-HOP-12-046
June 2012
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