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Updated 8:00 AM EST, April 15, 2008
Deployment Statistics
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Technologies Used by the Road Geometry Warning System to Communicate with Vehicles
2004 National Summary
Number of States Surveyed / Returned Survey
States with Deployed Systems
Number of States Reporting the Use of the Following Types of Technologies
Dynamic Message Signs
Highway Advisory Radio
In-vehicle Warning
Flashing Lights
In-pavement Roadside Edge Lights
50 / 46
13
7
1
0
11
0
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.
State
Total Number of Deployed Systems
Uses the Following Types of Technologies
Dynamic Message Signs
Highway Advisory Radio
In-vehicle Warning
Flashing Lights
In-pavement Roadside Edge Lights
Alabama
0
Alaska
0
Arizona
0
Arkansas
0
California
1
No
No
No
Yes
No
Colorado
39
Yes
Yes
No
Yes
No
Connecticut
0
Delaware
0
Florida
0
Georgia
6
Yes
No
No
Yes
No
Hawaii
0
Idaho
0
Illinois
N/R*
N/R*
N/R*
N/R*
N/R*
N/R*
Indiana
N/R*
N/R*
N/R*
N/R*
N/R*
N/R*
Iowa
1
Yes
No
No
Yes
No
Kansas
0
Kentucky
0
Louisiana
0
Maine
0
Maryland
3
Yes
No
No
Yes
No
Massachusetts
0
Michigan
0
Minnesota
0
Mississippi
N/R*
N/R*
N/R*
N/R*
N/R*
N/R*
Missouri
3
Yes
No
No
Yes
No
Montana
0
Nebraska
0
Nevada
0
New Hampshire
N/R*
N/R*
N/R*
N/R*
N/R*
N/R*
New Jersey
4
No
No
No
Yes
No
New Mexico
N/R*
N/R*
N/R*
N/R*
N/R*
N/R*
New York
1
No
No
No
Yes
No
North Carolina
0
North Dakota
0
Ohio
0
Oklahoma
0
Oregon
2
Yes
No
No
No
No
Pennsylvania
N/R*
N/R*
N/R*
N/R*
N/R*
N/R*
Rhode Island
0
South Carolina
60
No
No
No
Yes
No
South Dakota
0
Tennessee
0
Texas
16
No
No
No
Yes
No
Utah
0
Vermont
0
Virginia
N/R*
N/R*
N/R*
N/R*
N/R*
N/R*
Washington State
0
West Virginia
0
Wisconsin
6
Yes
No
No
No
No
Wyoming
1
No
No
No
Yes
No
50 States * N/R = No response