As part of the Master Plan to expand the San Francisco International Airport, San Francisco Airport Authority intended to significantly expand its off-site long-term parking facilities (4,000 additional parking spaces) and extend the airTrain people mover system to the expanded long-term parking facilities to form a multi-modal center. The objective was to require shuttle buses and public transit buses to end their services at the multi-modal center and to reduce on airport passenger loading needs.

CHS served as the Traffic Analysis Task Leader for the development of a concept plan for the Multi-Modal Center. CHS assessed traffic operational constraints both internal to the site and at key external intersections. CHS also assessed the needs to separate different types of vehicular movements (for both ingress and egress), lane requirements, potential queuing impacts, internal roadway layouts, and pedestrian circulation (both vertical and horizontal) between parking stalls, AirTrain stops, and bus parking areas.