Cal. Code Regs. tit. 17, § 95307.0.1
(a) Trailer Fleet Compliance Schedule Applicability.
(5) Trailer fleet size determination. For purposes of this section, fleet size is the total of all 53-foot or longer box-type trailers within the owner's fleet, including:
(B) trailers that operate in California, including but not limited to:
(6) Applicable Compliance Schedules.
(A) A fleet owner with a trailer fleet size of 21 or more trailers, as determined in accordance with section 95307(a)(5) above, may elect to participate in either of the following two compliance schedule options. A large fleet owner who does not register for one of these options must bring all trailers in the fleet into compliance as specified in section 95303(b)(3)(B) or section 95303(b)(3)(F).
(b) Large Fleet Compliance Schedule.
(1) Option 1 of the large fleet compliance schedule:
(A) Minimum fleet conformance thresholds (Table 1): A trailer owner participating in this large fleet compliance schedule option must ensure that the percentage of compliant trailers on the compliance plan base list, as described in section 95307(d)(3), is equal to or greater than:
6. 100 percent by January 1, 2016.
Table 1: Minimum Fleet Conformance Thresholds for the Large Fleet Compliance Schedule (Option 1)
Compliance Year (Y)
Minimum Fleet Conformance Threshold (PY)
Conformance Threshold Deadline
2010
5%
January 1, 2011
2011
15%
January 1, 2012
2012
30%
January 1, 2013
2013
50%
January 1, 2014
2014
75%
January 1, 2015
2015
100%
January 1, 2016
(2) Option 2 of the large fleet compliance schedule:
(A) Minimum fleet conformance thresholds (Table 2): A trailer owner participating in this large fleet compliance schedule option must ensure that the percentage of compliant trailers on the compliance plan base list, as described in section 95307(d)(3), is equal to or greater than:
5. 100 percent by January 1, 2016.
Table 2: Minimum Fleet Conformance Thresholds for the Large Fleet Compliance Schedule (Option 2)
Compliance Year (Y)
Minimum Fleet Conformance Threshold (PY)
Conformance Threshold Deadline
2010
--
--
2011
20%
January 1, 2012
2012
40%
January 1, 2013
2013
60%
January 1, 2014
2014
80%
January 1, 2015
2015
100%
January 1, 2016
(3) To participate in either Option 1 or Option 2, a trailer owner must provide the following information to the Executive Officer, electronically or in a document package entitled “Large Fleet Compliance Plan,” by July 1, 2010 for Option 1, and by July 1, 2011 for Option 2. This submittal must include the following:
(F) Early compliance option reporting, if applicable: If a trailer owner elects to delay the compliance of trailers in accordance with section 95307(b)(4), such owner must submit the following trailer information within the compliance plan:
(4) Early compliance option: Subject to the requirements and limitations set forth in this section, for every one early compliance trailer in an owner's fleet, a trailer owner may delay the retrofit or replacement of 1.5 non-compliant trailers until December 31, 2016.
(c) Small Fleet Compliance Schedule.
(1) Minimum fleet conformance thresholds (Table 3): A trailer owner participating in the small fleet compliance schedule must ensure that the percentage of compliant trailers on the compliance plan base list, as defined in section 95307(d)(3), is equal to or greater than:
(D) 100 percent by January 1, 2017.
Table 3: Minimum Fleet Conformance Thresholds for the Small Fleet Compliance Schedule
Compliance Year (Y)
Minimum Fleet Conformance Threshold (PY)
Conformance Threshold Deadline
2013
25%
January 1, 2014
2014
50%
January 1, 2015
2015
75%
January 1, 2016
2016
100%
January 1, 2017
(2) Small fleet compliance plan: To participate in the small fleet compliance schedule, a trailer owner must provide the following information to the Executive Officer, electronically or in a document package entitled “Small Fleet Compliance Plan,” by July 1, 2012. This submittal must include the following:
(d) General Compliance Plan Components.
(1) Statement of intent: The statement of intent must be provided to the Executive Officer as part of the owner's compliance plan by the applicable compliance plan due date. The statement of intent must include the following:
(2) Trailer fleet list: The trailer fleet list, as defined in this section, must be provided to the Executive Officer as part of the owner's compliance plan by the applicable compliance plan due date. Except upon specific Executive Officer approval, the trailer owner may not change the number or identity of trailers included on the trailer fleet list once the submission due date for the applicable compliance plan has passed. The trailer fleet list must include the following:
(M) List of all 2010 and previous model-year 53-foot or longer box-type trailers that are subject to the requirements of this subarticle while the owner is participating in an optional trailer fleet compliance schedule:
(N) For each trailer listed, provide the following:
(3) Compliance plan base list: The compliance plan base list is the list of all non-compliant trailers identified on the trailer fleet list as trailers that will be brought into compliance in accordance with the applicable compliance schedule. Trailers that are not early compliance trailers but are in compliance before January 1, 2010, may also be included on the compliance plan base list and used to meet minimum fleet conformance thresholds. The compliance plan base list shall not include the following trailers:
(e) Calculation Methodology.
(1) Large fleet compliance plan base number: The compliance plan base number for large fleets is the number of trailers that a trailer owner elects to bring into compliance in accordance with the large fleet compliance schedule.
NLB = NT -- ND -- NE -- NR -- NX (Equation 1)
“NLB” = Large fleet compliance plan base number.
“NT” = Total number of trailers listed on the trailer fleet list.
“ND” = Number of delayed compliance trailers, as determined in accordance with section 95307(e)(3), if applicable.
“NE” = Number of early compliance trailers, not to exceed NE, max as determined in accordance with Equation 5, if applicable.
“NR” = Number of refrigerated-van trailers that are eligible for the compliance deadlines set forth in section 95303(b)(3)(F), if applicable.
“NX” = Number of trailers with a trailer fleet list exemption status of “exempt local-haul,” “exempt storage,” “dedicated to short-haul tractors,” or “dedicated to local-haul tractors,” if applicable.
(2) Small fleet compliance plan base number: The compliance plan base number for small fleets is the number of trailers that a trailer owner elects to bring into compliance in accordance with the small fleet compliance schedule.
NCA = NT -- NNC (Equation 2)
“NCA” = Total number of trailers in California fleet.
“NT” = Total number of trailers listed on the trailer fleet list.
“NNC” = Number of trailers that will not operate in California for the duration of an applicable trailer fleet compliance schedule
NSB = NCA -- NR -- NX (Equation 3)
“NSB” = Small fleet compliance plan base number.
“NCA” = Total number of trailers in California fleet, as determined in accordance with Equation 2.
“NR” = Number of refrigerated-van trailers that are eligible for the compliance deadlines set forth in section 95303(b)(3)(F), if applicable.
“NX” = Number of trailers with a trailer fleet list exemption status of “exempt local-haul,” “exempt storage,” “dedicated to short-haul tractors,” or “dedicated to local-haul tractors,” if applicable.
(3) Large fleet delayed compliance trailer number: The delayed compliance trailer number is the number of trailers for which compliance may be delayed, pursuant to section 95307(b)(4), Early Compliance Option.
ND = NE x 1.5 (Equation 4)
“ND” = Number of delayed compliance trailers, if applicable. If ND is not a whole number, round down to the next whole number.
“NE” = Number of early compliance trailers, not to exceed NE, max as determined in accordance with Equation 5, if applicable.
(4) Large fleet maximum allowable number of early compliance trailers:
The resultant number must be rounded down to the nearest whole trailer.
NE, max = (NT -- NR -- NX) x 0.20 (Equation 5).
“NE, max” = Maximum allowable number of early compliance trailers. If NE, max is not a whole number, round down to the next whole number.
“NT” = Total number of trailers listed on the trailer fleet list.
“NR” = Number of refrigerated-van trailers that are eligible for the compliance deadlines set forth in section 95303(b)(3)(F), if applicable.
“NX” = Number of trailers with a trailer fleet list exemption status of “exempt local-haul,” “exempt storage,” “dedicated to short-haul tractors,” or “dedicated to local-haul tractors,” if applicable.
(5) Annual conformance number: The annual conformance number is the number of trailers that a trailer owner must bring into compliance by December 31st of a particular compliance year to ensure that the percentage of compliant trailers within the compliance plan base list meets or exceeds the applicable minimum fleet conformance threshold that takes effect on January 1 of the following year.
NY = (NB x PY) -- NC, Y-1 (Equation 6)
“NY” = Annual conformance number for compliance year Y. If NY is not a whole number, round up to the next whole number if the fractional part is equal to or greater than 0.5, and round down if less than 0.5.
“NB” = The compliance plan base number, either NLB as calculated in section 95307(e)(1) for a large fleet or NSB as calculated in section 95307(e)(2) for a small fleet.
“PY” = Minimum fleet conformance threshold for compliance year Y, as defined in section 95307(b)(1) for large fleets and 95307(c)(1) for small fleets, expressed as a decimal (e.g. 5 percent is entered into equation as 0.05).
“NC, Y-1” = Total number of trailers within the compliance base that would already be in compliance prior to January 1 of compliance year Y. This number must not include early compliance trailers.
(f) Reporting Requirements
(1) For each trailer listed in the compliance plan base list that is brought into compliance in order to meet the conformance threshold of a particular year, the owner must provide the trailer identification number (vehicle identification number (VIN)) and the applicable compliance method for the trailer as defined in (A), (B), or (C) below, to the Executive Officer by no later than December 31st of that year.
(g) General Requirements for All Compliance Schedules: To participate in a trailer fleet compliance schedule, a trailer owner must comply with the following requirements:
(11) A trailer owner who is participating in the small fleet compliance schedule may not allow a 2010 or previous model year trailer subject to the requirements of this subarticle to operate on a highway within California after July 1, 2012, unless:
(B) the trailer was acquired after July 1, 2012 and both of the following criteria are met:
(17) A trailer owner who is participating in one of the large fleet compliance schedule options may not allow a trailer subject to the requirements of this subarticle to operate on a highway within California after July 1, 2010 if participating in Option 1, or July 1, 2011, if participating in Option 2, unless:
For purposes of this section, any cross-referenced section in title 13 or title 17 of the California Code of Regulations shall refer to the section identified as the alternative version “(Alternative)” for the corresponding section, to the extent an alternative version of that section exists.
Note: Authority cited: Sections 39600, 39601, 38510, 38560 and 38560.5, Health and Safety Code. Reference: Sections 39600, 38560, 38560.5 and 38580, Health and Safety Code.
1. New section filed 10-2-2025 as an emergency; operative 10-2-2025 (Register 2025, No. 40). A Certificate of Compliance must be transmitted to OAL by 4-1-2026 or emergency language will be repealed by operation of law on the following day.
2. New section refiled 3-26-2026 as an emergency; operative 4-1-2026 (Register 2026, No. 13). A Certificate of Compliance must be transmitted to OAL by 6-30-2026 or emergency language will be repealed by operation of law on the following day.