well as with the axle-counters used to regulate light rail traffic, subsequently pushed back the opening of the line to April 2015, and subsequently to May 23, 2015. New plans are in the works for the connection from palm center and the Hobby airport. Stations The following is a list of stations for the Purple Line, listed in order from north to south. METRORail line key Red Line Green Line Expansion A possible expansion for the Purple Line would allow it to head east onto Griggs Road and into the Gulfbank area. From there it would head south to William P. Hobby Airport. Impact on students The light rail route was intended to benefit students of the University of Houston and Texas Southern University, by giving students (especially those without transportation) access to Houston's attractions and Downtown restaurants and nightlife. METRO acknowledges college students to be the biggest rider demographic for the Purple Line. See also METRORail Green Line References External links Go METRORail Southeast Corridor: Supplemental Final Environmental Impact Statement, Volume 1 (April 2008) METRORail University of Houston campus