 Old Town Transit Center is also a light rail station on the San Diego Trolley's Green Line.This station originally served as that line's terminus, until a system realignment on September 2012 extended the Green Line though Old Town to Downtown San Diego.Once the Trolley's Mid-Coast extension is completed, the Blue Line will be re-extended through this station to serve the University City area, and so the Blue Line will once again serve Old Town by approximately 2021.