In the case of the San Bernardino County Transportation Commission, its official acts shall require the affirmative vote of a majority of the members representing the cities and a majority of the members of the board of supervisors if this is requested by either a majority of the members representing the cities or a majority of the members of the board of supervisors.
Source:
Section 130102.5, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=PUC§ionNum=130102.5..