HMMH has a track record of highly successful assistance to clients in the United States and throughout the world, including Puerto Rico, the US Virgin Islands, Guam, Australia, Canada, France, Germany, Hong Kong, Italy, Japan, Poland, South Africa, Spain, Sweden, Taiwan, and the United Kingdom.
Public Sector
Federal Agencies
State Agencies and Authorities
Regional and Municipal
International
Federal Agencies
- Department of Defense
- Department of Housing and Urban Development
- Department of Justice
- Department of Transportation
- Environmental Protection Agency
- Federal Aviation Administration
- Federal Highway Administration
- Federal Interagency Committee on Aviation Noise
- Federal Railroad Administration
- Federal Transit Administration
- National Aeronautics and Space Administration
- National Park Service
- United States Air Force
- United States Navy
- U.S. Army
- U.S. Trade and Development Agency
- Volpe National Transportation Systems Center
State Agencies and Authorities
- Alaska DOT
- Arizona DOT
- CalTrans
- Colorado DOT
- Connecticut DOT
- Maryland Aviation Administration
- Massachusetts Bay Transportation Authority
- Massachusetts Highway Department
- Massachusetts Port Authority
- Massachusetts Turnpike Authority
- Nevada DOT
- New Hampshire DOT
- New Jersey DOT
- New York State DOT
- New York State Thruway Authority
- North Texas Tollway Authority
- Port Authority of New York & New Jersey
- Puerto Rico DOT and Public Works
- Rhode Island Airports Corporation
- Texas DOT
- Virginia DOT
Regional and Municipal Agencies and Authorities
- Arapahoe County Public Airport Authority
- Bay Area Rapid Transit District, CA
- Blaine County Airport Commission
- Boca Raton Airport Authority, FL
- Broward County
- Central Phoenix/East Valley Light Rail Transit
- City and County of Denver
- City of Atlanta, GA
- City of Bloomington, MN
- City of Charlotte, NC
- City of Columbus, OH
- City of Dallas, TX
- City of El Segundo, CA
- City of Fort Lauderdale, FL
- City of Grapevine, TX
- City of Houston, TX
- City of Long Beach, CA
- City of Los Angeles, CA
- City of McKinney, TX
- City of Mesa, AZ
- City of Philadelphia, PA
- City of Phoenix, AZ
- City of Pittsburgh, PA
- City of San Antonio, TX
- City of San Francisco, CA
- City of San José, CA
- City of Torrance, CA
- City of Vero Beach, FL
- City of Worcester, MA
- Clark County, WY
- Columbus Airport Authority
- County of Orange, CA
- County of Sacramento
- County of Santa Clara, CA
- Dallas Area Rapid Transit
- Denver Regional Transportation District
- Greater Orlando Airport Authority
- Hillsborough County Aviation Authority, PA
- Houston METRO Transit Authority
- Lehigh-Northampton Airport Authority
- Long Island MacArthur Airport
- Long Island Regional Planning Board
- Los Angeles County Metropolitan Transit Authority
- Metro-Dade Aviation Department
- Middlesex County, VA
- Milwaukee County
- Minneapolis-St. Paul Metropolitan Airports Commission
- Mobile Airport Authority
- Montgomery County Revenue Authority
- MTA New York City Transit
- Naples Airport Authority
- Nashville Airport Authority
- New Orleans International Airport
- Palm Beach County, FL
- Peninsula Corridor Joint Powers Board (Caltrain)
- Port of Oakland
- Port of Portland
- Port of Seattle
- Raleigh-Durham Airport Authority
- Roanoke Regional Airport
- Salt Lake City Corporation
- San Diego Regional Airport Authority
- San Francisco Airport Commission
- San Juan Tren Urbano
- Santa Clara Valley Transportation Authority
- Saratoga County, NY
- Solano County, CA
- Syracuse Hancock International Airport
- Washington Metropolitan Area Transportation Authority
- Westchester County
- Westover Metropolitan Corporation
- Worcester Redevelopment Authority
International
- AENA, Spain
- Airports Company South Afric
- Airservices Australia
- BAA plc
- Birmingham International Airport
- City of Saskatoon
- Civil Aviation Authority, UK
- Gatwick Airport Limited
- Kowloon-Canton Railway Corporation
- Ontario Ministry of Transportation
- Québec Ministry of Transportation
- Taipei Municipal Government
- Transport Canada