(a) The standards of this section apply for the following vehicles:
(1) Vehicles above 14,000 pounds GVWR and at or below 26,000 pounds GVWR, but not certified to the vehicle standards Sec. 1037.104.
(2) Vehicles above 26,000 pounds GVWR that are not tractors.
(3) Vocational tractors.
(4) Vehicles at or below 14,000 pounds GVWR that are excluded from the standards in Sec. 1037.104 under Sec. 1037.104 (f) or use engines certified under Sec. 1037.150(m).
(b) The CO2 standards of this section are given in Table 1 to this section. The provisions of Sec. 1037.241 specify how to comply with these standards.
Table 1 to Sec. 1037.105--CO2 Standards for Vocational Vehicles------------------------------------------------------------------------
CO2 standard
(g/ton-mile) CO2 standard
GVWR (pounds) for model (g/ton-mile)
years 2014- for model year
2016 2017 and later------------------------------------------------------------------------GVWR <=19,500........................... 388 37319,500 4 or N2O standards apply under this section. See 40 CFR part 1036 for CH4 or N2O standards that apply to engines used in these vehicles.
(d) You may generate or use emission credits under the ABT program as described in subpart H of this part. This requires that you specify a Family Emission Limit (FEL) for CO2 for each vehicle subfamily. The FEL may not be less than the result of emission modeling from Sec. 1037.520. These FELs serve as the emission standards for the vehicle subfamily instead of the standards specified in paragraph (b) of this section.
(e) Your vehicles must meet the exhaust emission standards of this section throughout their full useful life, expressed in service miles or calendar years, whichever comes first. The following useful life values apply for the standards of this section:
(1) 110,000 miles or 10 years, whichever comes first, for vehicles at or below 19,500 pounds GVWR.
(2) 185,000 miles or 10 years, whichever comes first, for vehicles above 19,500 pounds GVWR and at or below 33,000 pounds GVWR.
(3) 435,000 miles or 10 years, whichever comes first, for vehicles above 33,000 pounds GVWR.
(f) See Sec. 1037.631 for provisions that exempt certain vehicles used in off-road operation from the standards of this section.
(g) You may optionally certify a vocational vehicle to the standards and useful life applicable to a higher vehicle service class (such as medium heavy-duty instead of light heavy-duty), provided you do not generate credits with the vehicle. If you include smaller vehicles in a credit-generating subfamily (with an FEL below the standard), exclude its production volume from the credit calculation.