David has assisted multiple federal, state and regional transportation agencies in their efforts.  A sampling of his clients include:

  • Colorado, Minnesota, Washington, New York, North Carolina, California, Ohio, Pennsylvania, and Texas Departments of Transportation
  • Metropolitan Council (Minneapolis / St. Paul), Metropolitan Transportation Commission (San Francisco / Oakland), Southern California Association of Governments (Los Angeles / Orange), Denver Regional Council of Governments, and Maricopa Association of Governments (Phoenix)
  • U.S. Federal Highway Administration
  • Ontario Ministry of Transportation and Region of Peel (Canada)
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