Share this: Facebook Twitter LinkedIn SFMTA.com/14555 Prediction Unavailable min Arriving Prediction Unavailable Stop closed — no service Predictions valid as of Predictions unavailable for any route as of Route & Arrival Details 19 Polk 5 a.m. - 10 p.m. daily 91 3rd Street/19th Avenue Owl 12 a.m. - 5 a.m. nightly Live Map