Following the passage of HB1353, the Texas Department of Transportation has been looking at where it oughta bump up the state's speed limit to 75 miles per hour. Today it released that list, and it spans some 1,500 miles of Texas highways -- a "major milestone," per the press release. Says Carol Rawson, TxDOT's Traffic Operations Division director: "Texas' economic strength depends on the efficient and safe movement of people and goods. These new speed limits increase highway efficiency while maintaining the safety of the transportation system." TxDOT breaks down the speed-up here.