California Code
ARTICLE 4 - General Powers and Duties of the Department of Transportation
Section 30150.2.

30150.2. Notwithstanding any other provision of law, not later than 60 days after the effective date of this section, tolls on state-owned toll bridges shall be based on the number of axles on a vehicle or the total number of axles on a vehicle plus the total number of axles on a drawn trailer or vehicle.

(Added by Stats. 1997, Ch. 252, Sec. 3. Effective August 11, 1997.)