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Road and Weather Management
Road and weather management ITS services include RWIS stations, snow zone warnings, ice warnings, wind warnings, and flood warnings.  These systems are designed to collect real-time data, warn the motoring public about hazardous conditions, and improve the efficiency and safety of our maintenance crews. 

Oregon Case Studies
Seaside Flood Warning Detection System
Between MP 22.66 to 23.54 on Highway 101, severe winter flooding occurs.  District maintenance forces do not have advanced warning of an impeding flood situation.  Because of this, motorists are experiencing standing water on the roadside without any prior warning.  It is the intent of this project to provide advanced warning to the public and reduce the cost of deploying maintenance personnel.
 
Yaquina Bay Wind Warning Systems
Along the Oregon coast, where high winds are common, ODOT implemented warning systems to automatically detect severe conditions and to alert travelers.   One location that was chosen was the Yaquina Bay Bridge.  Prior to the installation of this system, maintenance staff would have to monitor wind conditions using a hand-held anemometer.  In an evaluation conducted by Montana State University after the system was implemented, it was estimated that the system saves $17,910 per year in labor and equipment costs [1].
 
I-84 Snow Zone Signs
Oregon has snow zone signs to help keep its drivers safe.  For example, there are signs to warn drivers when chains are required.  Along I-84, near Pendleton and La Grande, ODOT has enhanced the snow zone signs to be controlled remotely instead of requiring maintenance personnel to manually update the signs.  This not only improved efficiency but also safety for both the public and ODOT employees.
 
Butte Creek Ice Warning System
An ice warning system was recently deployed near Butte Creek to advise travelers of adverse winter driving conditions.  The system consists of a road weather information system used to measure environmental conditions that is linked to two static signs with flashing beacons warning travelers of icy conditions.  When the threshold conditions are met, the warning flashing beacons will automatically turn on. 
 
Road Weather Information Systems
 
Road weather information systems (RWIS) are tools that transportation agencies rely on to provide detailed, spot specific pavement and environmental condition data.  RWIS provides sufficient microscopic level detail which is necessary for improved maintenance and operations of the roadway particularly in snow and ice conditions.  RWIS data enable ODOT maintenance crews to make better decisions about when and where to send maintenance vehicles and what treatments would work best based on the surface conditions and physical characteristics of the roadway. In using agency resources more efficiently, ODOT saves money and can more effectively utilize maintenance crews. ODOT expects to save $7 million over 25 years due to reduction in chemical usage (i.e. for deicing), more efficient scheduling of crews, and less damage to vegetation [2].

References
  1. Kumar, M., and Strong, C. Comparative Evaluation of Automated Wind Warning Systems Showcase Evaluation #15. September 2005.
  2. Boon, C.B., and Cluett, C. Road Weather Information Systems: Enabling Proactive Maintenance Practices in Washington State.  Seattle, WA.  March 2002.
 
 
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