ACKNOWLEDGEMENTS
The authors of this report gratefully acknowledge the contributions by several representatives of the following public agencies for providing information to support this research effort at one or more times during the project:
- California Department of Transportation
- Delaware Department of Transportation
- Illinois Department of Transportation
- Maryland State Highway Administration
- Michigan Department of Transportation
- New Jersey Department of Transportation
- North Carolina Department of Transportation
- Ohio Department of Transportation
- Oregon Department of Transportation
- Rhode Island Department of Transportation
- Texas Transportation Institute
- Wisconsin Department of Transportation.
