Cal. Health & Safety Code § 44024.5

(a) The department shall compile and maintain statistical and emissions profiles and data from motor vehicles that are subject to the motor vehicle inspection program. The department may use data from any source, including remote sensing data, in use data, and other motor vehicle inspection program data, to develop and confirm the validity of the profiles, to evaluate the program, and to assess the performance of smog check stations. The department shall undertake these requirements directly or seek a qualified vendor for these services.
(b) The department, in cooperation with the state board, shall perform analyses of data collected pursuant to subdivision (a) and report the results to the public biennially beginning no later than July 1, 2011. The report shall include, at a minimum, all of the following:
1. (1) An independent validation of the evaluation methods, findings, and conclusions presented in the report.
2. (2) The percentage of vehicles that initially passed a smog check inspection and then failed a subsequent inspection as indicated by the data collected pursuant to subdivision (a).
3. (3) The percentage of vehicles that initially failed a smog check inspection and then failed a subsequent inspection as indicated by the data collected pursuant to subdivision (a).
4. (4) An estimate of excessive emissions resulting from vehicles identified in paragraphs (2) and (3).
5. (5) A best-efforts explanation regarding the reasons vehicles identified in paragraphs (2) and (3) inappropriately failed or passed an inspection.
6. (6) Recommended changes to the smog check program to reduce to a minimum the excess emissions identified in paragraph (4). In developing the recommended changes, the department and the state board shall undertake a thorough evaluation of the best practices of other state smog check inspection programs, and shall include in the recommendations how these other state best practices can be incorporated into California’s program. Program recommendations pertaining to contracting with one or more entities to manage smog check stations shall not be implemented unless the Legislature, by statute, authorizes that contracting.
7. (7) A comparison to the findings of the report “Evaluation of the California Smog Check Program Using Random Roadside Data” dated March 12, 2009.
(c) The department and the state board, in consultation with the Inspection and Maintenance Review Committee, may determine that, in addition to the vehicles excepted pursuant to Section 44011, certain other motor vehicles may be excepted from the biennial certification requirements of this chapter without significantly compromising the emission reduction objectives set forth in the State Implementation Plan (SIP).
(d) The department may conduct a pilot program to except from the biennial certification requirement those vehicles that may be jointly determined by the department and the state board, after consultation with the Inspection and Maintenance Review Committee, to warrant exception. The department shall provide written notification to the Legislature specifying the number of vehicles to be exempted as well as the geographic location and duration of the pilot program not less than 30 days prior to the implementation of the pilot program. The department shall submit the results of the pilot program to the state board and the Inspection and Maintenance Review Committee for review. Subject to the approval of the United States Environmental Protection Agency as an amendment to the SIP, the department may establish the exception program as a permanent program.
(e) For vehicles four model years old or less, the department shall use test data generated pursuant to Section 44014.7 to develop statistical and emissions profiles. The department may use data from any source, including remote sensing data, warranty repair and recall data, and other motor vehicle inspection program data, to develop and confirm the validity of the data. If the department and state board jointly determine that the emissions from a class of motor vehicles would potentially compromise the emission reduction objectives set forth in the SIP, the state board shall consider appropriate corrective action, including, but not limited to, recall pursuant to Section 43105.