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Updated 8:00 AM EST, April 15, 2008
 Deployment Statistics        


Crash Prevention and Safety Road Condition Hazards Detected by the Environmental Road Hazard Warning System

2004 National Summary


Number of States Surveyed / Returned SurveyStates with Deployed SystemsNumber of States Reporting Systems that Detect the Following Types of Hazards
Ice on BridgeIcy RoadWet RoadObstructions on RoadFlooding
50 / 46221212602

2004 Statewide Summary

Click here to show only the States with the specified technology

Click on a hyperlinked column header to sort the data by the column value.

StateTotal Number of Deployed SystemsDetects the Following Types of Hazards
Ice on BridgeIcy RoadWet RoadObstructions on RoadFlooding
Alabama1NoNoNoNoNo
Alaska0     
Arizona0     
Arkansas0     
California26YesYesNoNoNo
Colorado3YesNoNoNoNo
Connecticut0     
Delaware0N/R*N/R*N/R*N/R*N/R*
Florida0     
Georgia1NoNoNoNoNo
Hawaii0     
Idaho2NoYesNoNoNo
IllinoisN/R*N/R*N/R*N/R*N/R*N/R*
IndianaN/R*N/R*N/R*N/R*N/R*N/R*
Iowa1YesNoNoNoNo
Kansas0     
Kentucky0     
Louisiana1NoNoNoNoNo
Maine0     
Maryland60YesYesYesNoNo
Massachusetts0     
Michigan0     
Minnesota88YesYesNoNoNo
MississippiN/R*N/R*N/R*N/R*N/R*N/R*
Missouri1YesYesYesNoNo
Montana60YesYesYesNoNo
Nebraska0     
Nevada3NoYesNoNoNo
New Hampshire0     
New Jersey31YesYesYesNoNo
New Mexico0     
New York4YesYesYesNoNo
North Carolina2NoYesNoNoNo
North Dakota0     
Ohio0     
Oklahoma0     
Oregon5NoNoNoNoYes
PennsylvaniaN/R*N/R*N/R*N/R*N/R*N/R*
Rhode Island0     
South Carolina1NoNoNoNoNo
South Dakota0     
Tennessee1NoNoNoNoNo
Texas37YesYesNoNoYes
Utah11YesYesYesNoNo
Vermont0     
VirginiaN/R*N/R*N/R*N/R*N/R*N/R*
Washington State0     
West Virginia1NoNoNoNoNo
Wisconsin0     
Wyoming1YesNoNoNoNo
 50 States      * N/R = No response