A segment of Metro Local line 150 runs on Topanga Canyon Boulevard between Ventura Boulevard and Devonshire Street.[citation needed] The Topanga Canyon Beach Bus, operated by the Los Angeles County Department of Public Works, runs on the southern portion of SR 27. It has numerous stops between Warner Center to downtown Santa Monica, including stops in Topanga along SR 27.[4]
Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers to an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see California postmile § Official postmile definitions).[1] Segments that remain unconstructed or have been relinquished to local control may be omitted. The entire route is in Los Angeles County.
^ abcdCalifornia Department of Transportation. "State Truck Route List". Sacramento: California Department of Transportation. Archived from the original(XLS file) on September 5, 2015. Retrieved June 30, 2015.
^Federal Highway Administration (March 25, 2015). National Highway System: Los Angeles, CA(PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved October 18, 2017.
^Natzke, Stefan; Neathery, Mike & Adderly, Kevin (June 20, 2012). "What is the National Highway System?". National Highway System. Washington, DC: Federal Highway Administration. Retrieved July 1, 2012.
^California State Assembly. "An act...relating to State highways". Fifty-first Session of the Legislature. Statutes of California. State of California. Ch. 274.