The Virginia Department of Transportation is responsible for the building, maintenance and operation of the state's roads, bridges and tunnels. It has one of the largest state-maintained highway systems in the United States. The department offers a variety of programs, such as Adopt-a-Highway, Highway Safety Corridor and environmental. The Virginia Department of Transportation has a staff of more than 8,000 trained and certified specialists who provide transportation, highway information and road management services. It offers driving tips and route assistance services. The department provides fundraising services for airports, seaports, and rail and public transportation through the Commonwealth Transportation Board. The Virginia Department of Transportation has been operational since 1965.