agency's budget. According to a route-level analysis, in 2014, four lines accounted for more than half of all weekday riders: ECR, 120, 292, and 122/28, with ECR alone accounting for more than one quarter of all weekday riders. SamTrans is predicting a $28 million budget deficit by 2024 if it maintains existing levels of service and revenue sources, driven largely by growing employee pension obligations. In November 2017 the agency announced that it would place another half-cent (0.5 percent) sales tax, dubbed "Get Us Moving", on the county's November 2018 ballot. Officially SamTrans has not developed a spending plan for the estimated $80 million in annual revenues, but according to the San Mateo Daily Journal, "A very preliminary proposal suggested half of the money go toward SamTrans and Caltrain, both facing financial difficulty. The remaining revenue could be allocated in a manner similar to the current countywide transportation tax that supports projects covering highways, local roads, grade separations, bikes, pedestrians and other transit-related expenditures." The Staff Report stated that half the revenue raised by the proposed tax would go to public transit projects, with the remainder going to highway/interchange improvements (22.5%), local safety/pothole repairs (12.5%), regional connections (10%), and bicycle/pedestrian infrastructure (5%). Measure W passed on the November 2018 ballot; requiring a two-thirds majority, 66.9% of voters approved the measure. Facilities SamTrans headquarters are at 1250 San Carlos Avenue in a building built in 1979 and acquired in 1990, one block southwest of the Caltrain station. SamTrans has two maintenance bases. North Base opened in 1988. It is in South San Francisco, just north of San Francisco International Airport and adjacent to U.S. 101 and I-380. South Base opened in 1984 near the San Carlos Airport, east of U.S. 101 off Redwood Shores Parkway. Primary maintenance is carried out at North Base, which can store 200 buses. South Base can store 150 buses. SamTrans also owns Brewster Depot in Redwood City, which is used by its subcontractor MV Transportation for storage and dispatching; Brewster Depot is and was built in 1940. Bus service Currently, SamTrans serves the cities of San Mateo County, including Atherton, Belmont, Burlingame, Colma, Daly City, East Palo Alto, Foster City, Half Moon Bay, Hillsborough, Menlo Park, Millbrae, Pacifica, Palo Alto, Redwood City, San Bruno, San Carlos, San Mateo, and South San Francisco. Most routes provide connecting service to BART, Caltrain, or both. There is also regular