(a) The use of a heavy-duty motor vehicle that emits excessive smoke is prohibited. (b) (1) As expeditiously as possible, the state board shall develop a test procedure for the detection of excessive smoke emissions from heavy-duty diesel motor vehicles that is feasible for use in an intermittent roadside inspection program. During the development of the test procedure, the state board shall cooperate with the Department of the California Highway Patrol in conducting roadside inspections. (2) The state board may also specify visual or functional inspection procedures to determine the presence of tampering or defective emissions control systems in heavy-duty diesel or heavy-duty gasoline motor vehicles. However, visual or functional inspection procedures for heavy-duty gasoline motor vehicles shall not be more stringent than those prescribed for heavy-duty gasoline motor vehicles subject to biennial inspection pursuant to Section 44013. (3) The chairperson of the state board shall appoint an ad hoc advisory committee that shall include, but not be limited to, representatives of heavy-duty engine manufacturers, carriers of property for compensation using heavy-duty gasoline or heavy-duty diesel motor vehicles, and the Department of the California Highway Patrol. The advisory committee shall cooperate with the state board to develop a test procedure pursuant to this subdivision and shall advise the state board in developing regulations to implement test procedures and inspection of heavy-duty commercial motor vehicles. (c) Any smoke testing procedures or smoke measuring equipment, including any meter that measures smoke opacity or density and any recorder that stores or records smoke opacity or density measurements, used to test for compliance with this section and regulations adopted pursuant to this section, shall produce consistent and repeatable results. The requirements of this subdivision shall be satisfied by the adoption of Society of Automotive Engineers recommended practice J 1667, âSnap-Acceleration Smoke Test Procedures for Heavy-Duty Diesel Powered Vehicles.â (d) (1) The smoke test standards and procedures adopted and implemented pursuant to this section shall be designed to ensure that no engine will fail the smoke test standards and procedures when the engine is in good operating condition and is adjusted to the manufacturerâs specifications. (2) In implementing this section, the state board shall adopt regulations that ensure that there will be no false failures or that ensure that the state board will remedy any false failures without any penalty to the vehicle owner. (e) The state board shall enforce the prohibition against the use of heavy-duty motor vehicles that are determined to have excessive smoke emissions and shall enforce any regulation prohibiting the use of a heavy-duty motor vehicle determined to have other emissions-related defects, using the test procedure established pursuant to this section. (f) The state board may issue a citation to the owner or operator for any vehicle in violation of this section. The regulations may require the operator of a vehicle to submit to a test procedure adopted pursuant to subdivision (b) and this subdivision, and may specify that refusal to so submit is an admission constituting proof of a violation, and shall require that, when a citation has been issued, the owner of a vehicle in violation of the regulations shall, within 45 days, correct every deficiency specified in the citation. (g) The department may develop criteria for one or more classes of smog check stations capable of determining compliance with regulations adopted pursuant to this section and may authorize those stations to issue certificates of compliance to vehicles in compliance with the regulations. The department may contract for the operation of smog check stations for heavy-duty motor vehicles pursuant to this subdivision, and only heavy-duty motor vehicles may be inspected at those statio
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