Measure: Monthly Sales of Gasoline in Texas, gallons Average Weekday Transit Ridership Average Weekday Ridership on Rail Transit Average Weekday Riders on All HOV Lanes Average Weekday Riders on HOV Lanes Open in 2004 Average Weekday Transactions at all North Texas Tollway Authority (NTTA) Toll Booths Average Weekday Transactions at all NTTA Toll Booths Open in 2008 Average Weekday Passengers on Vanpools Average Weekday Counts at TxDOT Automatic Traffic Recorder (ATR) Stations