California Code of Regulations › Title 13 - Motor Vehicles › Division 3 - Air Resources Board › Chapter 1 - Motor Vehicle Pollution Control Devices › Article 2 - Approval of Motor Vehicle Pollution Control Devices (New Vehicles) › Section 1961.4 - Exhaust Emission Standards and Test Procedures-2026 and Subsequent Model Year Passenger Cars, Light-Duty Trucks, and Medium-Duty Vehicles

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a)
Purpose
				  and Applicability
(1) This section
				  1961.4 contains the California
				  "LEV IV" exhaust emission standards for 2026 and subsequent model year
				  passenger cars (PC), light-duty trucks (LDT), and medium-duty passenger
				  vehicles (MDPV), and for 2026 and subsequent model year medium-duty vehicles
				  (MDV). Unless otherwise noted, terms in this section shall have the definitions
				  provided in Part I, sections B.1 and B.2 of the "California 2026 and Subsequent
				  Model Year Criteria Pollutant Emission Standards and Test Procedures for
				  Passenger Cars, Light-Duty Trucks, and Medium-Duty Vehicles," incorporated by
				  reference in subsection (c)(1) below. References in this section to "light-duty
				  vehicle(s)" or "LDV(s)" shall include PCs, LDTs, and MDPVs. A manufacturer must
				  comply with the exhaust standards in subsections (d) and (e) that are
				  applicable to specific test groups, and with the fleet average and phase-in
				  requirements in subsections (d) and (e) that are applicable to the
				  manufacturer's entire fleet. For purposes of this section
				  1961.4, all MDPVs are subject to
				  the requirements of subsection (d) for LDVs and are not subject to the
				  requirements of subsection (e) for MDVs. The exhaust standards in subsections
				  (d) and (e) do not apply to ZEVs. ZEVs may not be included in either the
				  numerator or the denominator of any of the phase-in calculations in subsections
				  (d) or (e), except as noted in the fleet average requirement of subsection
				  (d)(1).
(2)
Optional 2025
				  model year compliance.
(A) In the
				  2025 model year, a manufacturer has the option of certifying one or more test
				  groups in its LDV fleet to the LEV IV standards in subsection (d)(2)(A) of this
				  section 1961.4 rather than to the
				  standards in title 13, CCR, section
				  1961.2. If the manufacturer elects
				  to optionally certify in 2025 model year:
1.
				  Vehicles in the test group must also meet the following requirements of section
				  1961.4 applicable to that emission
				  category from subsection (d)(2)(A): 50-degree Fahrenheit (F) standards of
				  subsection (d)(2)(D), Cold CO standard of subsection (d)(2)(E), US06 NMOG+NOx
				  and CO standards of subsection (d)(3)(A)1. or subsection (d)(3)(A)2., the US06
				  PM standard of 6 mg/mi in subsection (d)(3)(A)4.a., SC03 standard of subsection
				  (d)(4), and the Highway standard of subsection (d)(5); and
2. The manufacturer must also comply with the
				  2025 model year fleet average standard of subsection (d)(1) for all test groups
				  in its LDV fleet, including all test groups certified to section
				  1961.4 or to title 13, CCR,
				  section 1961.2 standards in lieu of
				  meeting the 2025 model year fleet average requirement of title 13, CCR, section
				  1961.2.
(B) In the 2025 model year, a manufacturer
				  has the option of certifying one or more test groups in its MDV fleet to the
				  standards in subsection (e) of this section
				  1961.4 rather than to the
				  standards in title 13, CCR, section
				  1961.2. If the manufacturer elects
				  to optionally certify in the 2025 model year:
1. Vehicles in the test group must meet all
				  the following requirements of section
				  1961.4 applicable to that emission
				  category from subsection (e)(2)(A): 50-degree F standards of subsection
				  (e)(2)(B), SFTP standards of subsection (e)(3)(A) or title 13, CCR, subsections
				  1961.2(a)(7)(C) and
				  (a)(7)(D), SC03 standard of subsection
				  (e)(4), and the Highway standard of subsection (e)(5); and
2. The manufacturer must also comply with the
				  fleet average standard of subsection (e)(1) for all test groups in its MDV
				  fleet, including all test groups certified to section
				  1961.4 or to title 13, CCR,
				  section 1961.2 standards in lieu of
				  meeting the 2025 model year fleet average requirement of title 13, CCR, section
				  1961.2.
(3)
Optional engine standards for
				  MDVs.
(A) A manufacturer has the
				  option of certifying engines used in incomplete MDVs greater than 10,000 lbs.
				  gross vehicle weight rating (GVWR) and all diesel engine MDVs greater than
				  10,000 lbs. GVWR to the heavy-duty engine standards and test procedures set
				  forth in title 13, CCR, section
				  1956.8. All incomplete and
				  complete MDVs with a GVWR of less than or equal to 10,000 lbs., including
				  engines used in such vehicles, and all complete Otto-cycle MDVs with a GVWR of
				  greater than 10,000 lbs. must be certified to the LEV IV chassis standards for
				  MDVs set forth in subsection (e) and the test procedures incorporated in
				  subsection (c)(1).
(B) For engines
				  used in MDVs that are certified to the engine standards of title 13, CCR,
				  section 1956.8 in accordance with
				  subsection (a)(3)(A), including those produced by small volume manufacturers,
				  the engines and MDVs are not subject to the MDV fleet average, emission
				  standards, or phase-ins of this section
				  1961.4 and must be certified to
				  the engine standards, emissions averaging provisions, and test procedures in
				  title 13, CCR, sections
				  1956.8(c)(1)(C)
				  or 1956.8(h)(7), as
				  applicable to heavy-duty diesel or Otto-cycle engines and as set forth in the
				  "California Exhaust Emission Standards and Test Procedures for 2004 and
				  Subsequent Model Heavy-Duty Otto-Cycle Engines" or the "California Exhaust
				  Emission Standards and Test Procedures for 2004 and Subsequent Model Heavy-Duty
				  Diesel Engines," incorporated by reference in title 13, CCR, sections
				  1956.8(b) or (d),
				  as applicable.