- Accelerator for America Action
- Active Transportation Group Letter
- American College of Sports Medicine
- American Council on Exercise
- American Heart Association
- American Physical Therapy Association
- American Planning Association
- American Public Health Association
- ASLA
- Association of Black Cardiologists
- Association of SNAP Nutrition Education Administrators (ASNNA)
- Association of State Public Health Nutritionists
- Big Cities Health Coalition
- Campaign for Trauma-Informed Policy & Practice (CTIPP)
- Childhood Obesity Prevention Coalition (WA State)
- Choose Outdoors
- East Coast Greenway Alliance
- Evanston Health Advisory Council
- Healthy Weight Partnership/MEND
- League of American Bicyclists
- LunchAssist
- Milken Institute School of Public Health
- Move to Live More
- NACDD
- National Association of Pediatric Nurse Practitioners
- National Athletic Trainers' Association
- National Fitness Foundation
- National Recreation and Park Association
- National Youth Sports Health & Safety Institute
- North Carolina Alliance for Health
- Physical Activity Alliance
- Pinnacle Prevention
- Rails-to-Trails Conservancy
- REI Co-op
- Safe Routes Partnership
- SHAPE America - Society of Health and Physical Educators
- Sierra Club
- Society for Public Health Education
- Society of Behavioral Medicine
- SOS Outreach
- The Trust for Public Land
- Transportation for America
- Trust for America's Health
- YMCA of the USA
- Alameda-Contra Costa Transit District (AC Transit)
- American Association for Justice (AAJ)
- American Council of Engineering Companies (ACEC)
- American Federation of State, County and Municipal Employees (AFSCME)
- The Associated General Contractors of America (AGC)
- American Highway Users Alliance
- American Public Transportation Association (APTA)
- American Society of Civil Engineers (ASCE)
- American Train Dispatchers Association
- American Trucking Association (ATA)
- Asian American Hotel Owners Association (AAHOA)
- Association for Commuter Transportation (ACT)
- Association of Metropolitan Planning Organizations
- Better Eugene-Springfield Transportation (BEST)
- Brotherhood of Locomotive Engineers & Trainmen (BLET)
- Brotherhood of Maintenance of Way Employees- Division of International Brotherhood of Teamsters (BMWED)
- Brotherhood of Railroad Signalmen
- California Transit Association
- Center for Auto Safety
- Center for Transportation and the Environment (CTE)
- City of Eugene, Oregon
- City of Fontana, CA
- City of San Buenaventura, CA
- Commercial Vehicle Safety Alliance (CVSA)
- Community Transportation Association of America (CTAA)
- Conference of Minority Transportation Officials (COMTO)
- Contra Costa Transportation Authority
- Cook County Department of Transportation & Highways
- Coos County, Oregon
- Environment America
- Greyhound Lines, Inc.
- Institute for Safer Trucking (IST)
- International Association of Machinists and Aerospace Workers
- International Brotherhood of Teamsters
- International Union of Operating Engineers
- ITS America
- Laborers International Union of North America (LiUNA)
- Los Angeles Streetcar, Inc.
- National Asphalt Pavement Association (NAPA)
- National Association of City Transportation Officials (NACTO)
- National Association of Development Organizations (NADO)
- National Association of Regional Councils (NARC)
- National Conference of Firemen & Oilers, SEIU
- National League of Cities (NLC)
- National Parks Conservation Association (NPCA)
- National Railroad Passenger Corporation (Amtrak)
- National Safety Council (NSC)
- National Wildlife Federation (NWF)
- Natural Resources Defense Council (NRDC)
- North American Bikeshare Association (NABSA)
- North America's Building Trades Unions (NABTU)
- Northeast Illinois Regional Commuter Railroad Corporation (Metra)
- Oregon Department of Transportation (ODOT)
- Pacific Northwest Waterways Association (PNWA)
- PeopleForBikes Coalition
- Professional Engineers in California Government (PECG)
- Rail Security Alliance (RSA)
- Rails-to-Trails Conservancy
- Rogue Valley Transportation District (RVTD)
- Sacramento Regional Transit District’s (SacRT)
- Safe Routes Partnership
- Salem Area Mass Transit District (RVTD)
- San Joaquin Regional Rail Commission
- San Joaquin Regional Transit District
- SMART-TD
- Southern Environmental Law Center (SELC)
- The Aluminum Association
- The Bus Coalition (TBC)
- The League of American Bicyclists
- The Trucking Alliance
- Theodore Roosevelt Conservation Partnership
- Transbay Joint Powers Authority
- Transportation Communications Union/IAM
- Transportation for America (T4A)
- Transportation Trades Department, AFL-CIO (TTD)
- Transport Workers Union of America (TWU)
- Tri-County Metropolitan Transportation District of Oregon (TriMet)
- UPS
- U.S. Public Interest Research Group (PIRG)
- U.S. Tire Manufacturers Association (USTMA)
- United Brotherhood of Carpenters and Joiners of America
- VIA Metropolitan Transit Authority (VIA)
- Whatcom Transportation Authority