 METRO is in the late planning stages of the US 90 Commuter line which will service the Ft Bend County and SW Harris County suburban region.Prior to the opening of METRORail, Houston was the largest major city in the United States without a rail transit system.Following a successful referendum held locally in 2004, METRO is currently in the beginning design phases of a 10-year expansion plan to add five more sections to connect to the current rail system.