- U.S. Representative John Delaney, Honorary Chair
- U.S. Representative Chris Van Hollen
- AAA Mid-Atlantic
- ABT Telecom
- Bethesda Chevy Chase Chamber of Commerce
- Chevy Chase Automotive, LLC
- Clarksburg Chamber of Commerce
- Clarksburg Civic Association
- Coalition for Upcounty
- Corridor Cities Transitway Coalition
- Timothy Dugan
- Elm Street Development
- Frederick Co. Chamber of Commerce
- Frederick Co. Executive Jan Gardner
- Frederick Co. Council President Bud Otis
- Frederick Regional Health System
- Gaithersburg-Germantown Chamber of Commerce
- Holy Cross Health
- Jade Solutions, LLC
- Marriott International, Inc.
- Maryland Building Industry Association
- Maryland Transp. Builders & Materials Assn.
- Matan, Inc.
- Montgomery County Chamber of Commerce
- Montgomery County Executive Isaiah Leggett
- Montgomery Co. Council President Nancy Floreen
- Montgomery Co. Councilmember Roger Berliner
- Montgomery Co. Councilmember George Leventhal
- Montgomery Co. Councilmember Craig Rice
- Natelli Communities
- Northern Virginia Transportation Alliance
- Amy Pressley, Former Mo. Co. Planning Board Member
- Rodgers Consulting, Inc.
- Samuel Raker
- Peter Samuel, Founder, Toll Roads News
- State Senator Brian Feldman
- State Senator Nancy King
- State Senator Jamie Raskin
- State Senator Ron Young
- State Delegate Kathy Afzali
- State Delegate Kumar Barve
- State Delegate Bill Folden
- State Delegate David Fraser-Hidalgo
- State Delegate Aruna Miller
- State Delegate Carol Krimm
- State Delegate Kiril Reznik
- State Delegate Karen Lewis Young
- Suburban Maryland Transportation Alliance
- The 2030 Group
- Washington Airports Task Force
- David Winstead, Former Secretary, MD DOT
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