American Public Transportation Association
Each state's page includes statewide, regional, and local transit systems and transportation providers, state government transportation agencies, and other statewide, regional, and local transportation Web sites. This directory leads to bus systems, subways, light rail, railroads, etc.
U.S. Department of State
Provides information on international travel to and from the United States. Also issues passports, travel warnings, consular information sheets & public announcements on terrorist threats. .