California Code, Vehicle Code - VEH § 34501.3

(a) No motor carrier shall schedule a run or permit or require the operation of any motor vehicle subject to this division between points within a period of time which would do either of the following:

(b) A logbook of a driver, which reflects a trip or trips between points within a period of time which would have necessitated excessive speed to complete, shall give rise to a rebuttable presumption that the driver exceeded the lawful speed limit.

(c) For a violation of paragraph (2) of subdivision (a), a first offense is punishable by a fine of not more than one thousand dollars ($1,000), a second offense by a fine of not more than two thousand five hundred dollars ($2,500), and a third or subsequent offense by a fine of not more than five thousand dollars ($5,000).