The United States has one of the world's largest transportation networks, though service quality and mode choice vary greatly by region.
## Roads and highways - The **Interstate Highway System** forms the backbone of long-distance road travel and freight movement. - Extensive federal, state, and local road networks connect urban, suburban, and rural areas. - Car ownership is central to daily mobility in much of the country.
## Public transit - Public transit is strongest in older and denser metros such as New York, Washington, Chicago, Boston, San Francisco, and Philadelphia. - Systems include buses, commuter rail, rapid transit, light rail, streetcars, and ferries. - Coverage is often limited in suburban and rural areas.
## Rail - **Amtrak** provides intercity passenger rail, especially useful in the Northeast Corridor and selected state-supported routes. - Freight rail is a major national strength; the U.S. has one of the world's largest freight rail systems.
## Airports - The country is served by a vast aviation network including major global hubs such as Atlanta, Dallas/Fort Worth, Denver, Chicago O'Hare, Los Angeles, New York JFK, and others. - Regional airports connect smaller cities and remote areas, including critical service in Alaska.
## Ports and waterways - Major seaports include Los Angeles, Long Beach, New York-New Jersey, Savannah, Houston, Seattle-Tacoma, and others. - Inland waterways, especially the Mississippi River system and Great Lakes-St. Lawrence system, are important for bulk freight.
## Walking, cycling, and micromobility - Walkability varies widely by city and neighborhood. - Bicycle infrastructure is strongest in selected metros and university towns, though expanding in many places. - Shared bikes, scooters, taxis, and rideshare services are common in urban areas.
## EV charging - Electric vehicle charging infrastructure is expanding nationwide, supported by both public and private investment, though availability remains uneven between metropolitan and rural areas.
Transportation access in the U.S. depends heavily on location: some residents can rely on rail and transit, while many others depend almost entirely on personal vehicles.