Houston TranStar - The agencies responsible for the planning, design, operations and maintenance of transportation operations and traffic emergency management operations within the Greater Houston Area. - http://www.houstontranstar.org/
Harris County Toll Road Authority - Manages the approximately 83 miles of toll roads in Harris County that includes both the Sam Houston Tollway and the Hardy Toll Road. Also oversees the EZ TAG program which allows motorists to pay tolls automatically without stopping. - http://www.hctra.com/