Cal. Gov. Code § 8879.78
If a metropolitan planning organization, county transportation commission, regional transportation planning agency, or other local agency uses funds made available to it pursuant to Section 2423 of the Streets and Highways Code, or pursuant to that section and from other sources, to fund any project to which bond funds were previously programed under this chapter with the effect of displacing the need for those bond funds on the project, the commission shall allocate funds for one or more qualifying projects in the appropriate program under this chapter, in the jurisdiction of that agency, and in the same amount of the displaced bond funds. Nothing in this section shall limit or modify the requirements of any program under Chapter 12.49 (commencing with Section 8879.20).
Ca. Gov. Code § 8879.78