Alder originally served as the eastern terminus of the first phase of the Tasman East light rail extension on May 17, 2001, and so was originally served by trains operating directly from
Mountain View. When the station first opened, it served the southern terminus of
AC Transit's 217 bus, the only such service that runs into
Santa Clara County. Since then, the second phase of the Tasman East extension altered the station's service patterns, and the 217 bus now terminates at the
Milpitas Transit Center. Since 2017, VTA's plans for new routes in support of the
Silicon Valley BART extension included renaming this station "Alder" after its cross-street Alder Drive. The station was renamed to Alder in 2021. == Service ==