The authority may apply for funds available to carry out its functions and may receive grants of funds to carry out its functions. All funds available to the authority shall be held in a separate account and accounted for independently. No transportation funds may be used for purposes of this division other than those activities of the authority related to transportation. No funding from the Traffic Relief Act for Sonoma County (Measure M), approved by voters in 2004 shall be used for the purpose of this division.