California Code, Public Utilities Code - PUC § 99268.5

(a) Commencing with claims for the 1980-81 fiscal year, no funds shall be allocated under this article in any fiscal year to an operator providing services using vehicles for the exclusive use of elderly and disabled persons, unless the operator maintains, for the fiscal year, a ratio of fare revenues to operating cost, as defined by subdivision (a) of Section 99247, for those services at least equal to one-tenth or to the ratio it had for those services during the 1978-79 fiscal year, whichever is greater.

(b) Notwithstanding subdivision (a), an operator which provides both exclusive transportation services for elderly and disabled persons and regular scheduled public transportation services may be allocated funds under this article for the exclusive service if the combined services qualify under Section 99268.1, 99268.2, 99268.3, or 99268.4, as the case may be, and the ratio of fare revenues to operating cost for the combined service shall not be less than the ratio required in order to make allocations to the operator for its regular scheduled services.

(c) In a county which had less than 500,000 population as determined by the 1970 federal decennial census and more than 500,000 in population as determined by the 1980 or 1990 federal decennial census, an operator in the county shall maintain a ratio of fare revenues to operating cost, as defined by subdivision (a) of Section 99247, at least equal to one-fifth if serving an urbanized area or one-tenth if serving a nonurbanized area.