The width of an auxiliary lane should be equal to the through lanes. Where auxiliary lanes are provided along freeway main lanes, the adjacent shoulder should desirably be 2.4 to 3.6m [8 to 12 ft] in width, with a 1.8m [6 ft] wide shoulder being the minimum considered.
Lubbock County is a county located in the U.S. state of Texas. As of the 2010 census, the population was 278,831. Its county seat is Lubbock. The county was created in 1876 and organized in 1891. It is named for Thomas Saltus Lubbock, a Confederate colonel and Texas Ranger (some sources give his first name as Thompson).
As of 2010, the total population of Lubbock is 229,573, which is 15.04% more than it was in 2000. The population growth rate is much lower than the state average rate of 20.59% and is much higher than the national average rate of 9.71%.