Cal. Gov't Code § 65089.20

(a) A countywide transportation planning agency may place a majority vote ballot measure before the voters of the county to authorize an increase in the fees of motor vehicle registration in the county for transportation-related projects and programs described in this chapter. The agency may impose an additional fee of up to ten dollars ($10) on each motor vehicle registered within the county. The ballot measure resolution shall be adopted by a majority vote of the governing board of the countywide transportation planning agency at a noticed public hearing. The resolution shall also contain a finding of fact that the projects and programs to be funded by the fee increase have a relationship or benefit to the persons who will be paying the fee, and the projects and programs are consistent with the regional transportation plan adopted pursuant to Section 65080. The finding of fact shall require a majority vote of the governing board at a noticed public hearing.
(b) The ballot measure described in subdivision (a) shall be submitted to the voters of the county and if approved by the voters in the county, the increased fee shall apply to the original vehicle registration occurring on or after six months following the adoption of the measure by the voters and to a renewal of registration with an expiration date on or after that six-month period.
(c)
1. (1) The governing board of the countywide transportation planning agency shall adopt an expenditure plan allocating the revenue to transportation-related programs and projects that have a relationship or benefit to the persons who pay the fee. The transportation-related programs and projects include, but are not limited to, programs and projects that have the following purposes:
  1. (A) Providing matching funds for funding made available for transportation programs and projects from state general obligation bonds.
  2. (B) Creating or sustaining congestion mitigation programs and projects.
  3. (C) Creating or sustaining pollution mitigation programs and projects.
2. (2) For the purposes of paragraph (1), the following terms have the following meanings:
  1. (A) “Congestion mitigation programs and projects” include, but are not limited to, programs and projects identified in an adopted congestion management program or county transportation plan; projects and programs to manage congestion, including, for example, high-occupancy vehicle or high-occupancy toll lanes; improved transit services through the use of technology and bicycle and pedestrian improvements; improved signal coordination, traveler information systems, highway operational improvements, and local street and road rehabilitation; and transit service expansion.
  2. (B) “Pollution mitigation programs and projects” include, but are not limited to, programs and projects carried out by a congestion management agency, a regional water quality control board, an air pollution control district, an air quality management district, or another public agency that is carrying out the adopted plan of a congestion management agency, a regional water quality control board, an air pollution control district, or an air quality management district.
(d) Not more than 5 percent of the fees distributed to a countywide transportation planning agency shall be used for administrative costs associated with the programs and projects.
(e) For purposes of this section, “countywide transportation planning agency” means the congestion management agency created pursuant to Chapter 2.6 (commencing with Section 65088) or the agency designated pursuant to Section 66531 to submit the county transportation plan.