Current participants
The following states and the Federal Highway Administration are active members of the study.

- Colorado
- Connecticut
- Indiana
- Illinois
- Michigan
- Minnesota
- Nebraska
- North Dakota
- South Dakota
- Wisconsin
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Colorado Department of Transportation Thomas Aguilar Jamie Yount |
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Connecticut Department of Transportation John Korte Kevin Dahn |
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Illinois Department of Transportation Laura Shanley |
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Indiana Department of Transportation Tony McClellan Jeremy McGuffey JD Brooks |
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Michigan Department of Transportation Melissa Longworth Matt Pratt Mark Crouch James Roath |
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Minnesota Department of Transportation Jakin Koll Joe Huneke Jeffrey Jansen |
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Nebraska Department of Transportation Mike Mattison Dale Buttler Kerry Scott |
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North Dakota Department of Transportation Brad Darr Mike Kisse Brandon Beise |
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South Dakota Department of Transportation Dave Huft Dan Varilek |
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Wisconsin Department of Transportation Mike Adams Alan Johnson |
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Federal Highway Administration Bruce Hunt Ray Murphy |