High Street Consulting Group’s past and current clients include:
- American Association of State Highway and Transportation Officials
- Arizona Department of Transportation
- Chinese Ministry of Transport
- Federal Highway Administration
- Federal Transit Administration
- Florida Department of Transportation
- Indiana Department of Transportation
- Kansas Department of Transportation
- Kentucky Transportation Cabinet
- Maryland Department of Transportation
- Michigan Department of Transportation
- Mississippi Department of Transportation
- National Cooperative Highway Research Program
- National Rural Letter Carriers’ Association
- National Surface Transportation Infrastructure Financing Commission
- New York State Metropolitan Planning Organizations
- Transit Cooperative Research Program
- Transportation Research Board
- US Department of Transportation TIFIA Program