Cal. Public Utilities Code § 131050

Any board of supervisors which believes its county has essential traffic and transportation projects for which current estimates of federal, state, and local funds may not be adequately available, may establish, on or after January 1, 1986, in conjunction with the city selection committee a process to develop a countywide consensus on the need for these projects and on a proposed county transportation expenditure plan to adequately fund the construction, maintenance, repair, or operation of these projects. The process may include the establishment of a committee or committees as the board of supervisors and the city selection committee deem necessary. The process shall provide for the participation of representatives of cities and the county, representatives of transit agencies serving the county, the department, the commission, and other agencies determined to be necessary by the board of supervisors and the city selection committee. Meetings of any committee established are subject to the Ralph M. Brown Act (Chapter 9 (commencing with Section 54950) of Part 1 of Division 2 of Title 5 of the Government Code). The board of supervisors and the city selection committee may request the commission to provide some staffing assistance. The board of supervisors and the city selection committee shall establish, by resolution, an expected schedule and the process to be used for the completion of the tasks set forth in this chapter.