CD, or collector-distributor lanes, are high-speed roadways that “collect and distribute” vehicles, reducing the need for weaving and merging on the interstate mainlanes. The CD lanes for this project will run the length of I-10 between North Mesa Street and approximately one-half mile west of Sunland Park Drive. Motorists who plan to enter and exit often will predominantly use the CD lanes, while commuters who need to pass through the corridor nonstop will use the I-10 mainlanes.