Section 2196.6 - Smoke Opacity Standards(a) When tested using the SAE J1667 smoke opacity test procedure, a vehicle equipped with an on-road engine used for motive power shall not exceed the smoke opacity standards specified below:(1) 5% for any heavy-duty vehicle powered by a 2007 or subsequent model-year diesel engine.(2) 5% for any heavy-duty vehicle required to be equipped or retrofitted with a Level 3 VDECS, regardless of its diesel engine model-year.(3) 20% for any heavy-duty vehicle equipped or retrofitted with a Level 2 VDECS, regardless of its diesel engine model-year.(4) 20% for any heavy-duty vehicle powered by a 1997 to 2006 model-year diesel engine.(5) 30% for any heavy-duty vehicle powered by a 1991 to 1996 model-year diesel engine.(6) 40% for any heavy-duty vehicle powered by a pre-1991 model-year diesel engine.(b) When tested using the SAE J1667 smoke opacity test procedure, a vehicle equipped with an off-road engine used for motive power shall not exceed the smoke opacity standards specified below: (1) 5% for any heavy-duty vehicle powered with an off-road engine certified with a diesel particulate filter.(2) 5% for any heavy-duty vehicle powered with an off-road engine retrofitted with a Level 3 VDECS.(3) 10% for any heavy-duty vehicle powered with an off-road Tier 4 engine (interim or final) that is not equipped with a diesel particulate filter or is not retrofitted with a Level 3 VDECS.(4) 30% for any heavy-duty vehicle powered with an off-road Tier 2 or Tier 3 engine not retrofitted with a Level 3 VDECS.(5) 40% for any heavy-duty vehicle powered with an off-road Tier 1 engine not retrofitted with a Level 3 VDECS.Cal. Code Regs. Tit. 13, § 2196.6
1. New section filed 10-5-2022; operative 1-1-2023 (Register 2022, No. 40). Note: Authority cited: Sections 39002, 39003, 39600, 39601, 43000, 43013, 43018, 43701, 44011.6 and 44152, Health and Safety Code; and Section 27153, Vehicle Code. Reference: Sections 43701, 44011.6 and 44152, Health and Safety Code; and Section 27153, Vehicle Code.
1. New section filed 10-5-2022; operative 1/1/2023 (Register 2022, No. 40).