Keywords: SmarTrip Vending - Metro Center 2012.jpg SmarTrip vending machine of the Washington Metro system installed in the Metro Center station in 2012 These machines are the system's first self-service SmarTrip vending machines located within the Metro stations Previously the cards could only be purchased online or at retail outlets This machine provides Braille labeling and optional audio-based interaction for the purchase process for visually impaired customers Own Caseyjonz 2012-11-14 SmarTrip Metro Center WMATA station |