CalTrain Caltrain is a commuter rail service that operates between San Francisco, San Jose, and Gilroy. Service began in 1987 and now serves over 50,000 passengers a day. F40PH-2 916 at Tamien, January 9, 2006 Gallery Car interior, January 9, 2006 MP36PH-3C 928 at Tamien, January 9, 2006