Section 39838 Of Article 3. Schoolbuses From California Education Code >> Division 3. >> Title 2. >> Part 23.5. >> Chapter 1. >> Article 3.

. (a) Each schoolbus shall be equipped with one or more fire extinguishers bearing the approval of the laboratories of the National Board of Fire Underwriters, Underwriters' Laboratories Incorporated, or any other nationally recognized testing laboratory, and located in an easily accessible place in the driver's compartment.
  (b) Each schoolbus shall be equipped with one or more fire extinguishers with an aggregate rating of at least 8-B, C units, as rated by the Underwriters' Laboratories Incorporated. Carbon tetrachloride fire extinguishers may not be used on schoolbuses.