California Code, Streets and Highways Code - SHC § 188

(a) All federal and state funds to be allocated by the commission, or expended by the department, for transportation improvements under Section 164, except for purposes of subdivisions (b) and (c) of that section, shall be programmed during the period commencing on July 1, 1997, and ending on June 30, 2004, and for each four-year period thereafter, 40 percent in County Group No. 1 and 60 percent in County Group No. 2.

(b) This section shall be known and may be cited as the Barnes-Mills-Walsh formula.