S R. Fein

Document Type

Journal Article

Publication Date


Subject Area

operations - capacity, operations - coordination, operations - traffic, infrastructure - traffic signals, planning - signage/information, ridership - commuting, technology - passenger information, place - airport, mode - mass transit, mode - pedestrian


Transportation operations, Transit, Traffic signal networks, Traffic signal coordination, Traffic signal control systems, Synchronization (Traffic signals), Signal systems, San Francisco (California), Public transit, Pedestrians, Passenger transportation, Passenger information systems, Mass transit, Local transit, Linked signals, Landside capacity, Interconnection (Traffic signals), Interactive graphics, Information services, Information processing, Highway access, Data processing, Computer graphics, Computer controlled signals, Building, Automatic traffic signal control, Airports, Airport access, Aerodromes, Access to airports


San Francisco International Airport is located in San Mateo County, fourteen miles south of downtown San Francisco, on the west shore of San Francisco Bay. The Bayshore Freeway (U. S. 101) provides access to the airport from the north and south, and Inter-state 380 connects route 101. Owned and operated by the City and County of San Francisco, San Francisco International Airport (SFIA) is the eighth busiest airport in the world. On a typical day, 65,000 air passengers are processed through SFIA. A complex system of pedestrian and vehicular circulation is essential in order to handle all these travelers, plus thousands of well-wishers and welcomers, and 30,000 airport employees. Realizing that complete, accurate, and readily available information is one of the keys to inducing greater use of existing public transit services, Airport staff has helped to develop a user-interactive, computerized Ground Transportation Information System.