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).
According to a 2015 Census estimate, Lubbock had a population of 249,042, making it the 83rd-most populous city in the United States of America and the 11th-most populous city in the state of Texas. The city is the economic center of the Lubbock metropolitan area, which has a projected 2020 population of 327,424.