Code of Federal Regulations Title 40. Protection of Environment § 40.1037.1 Applicability

(a)This part contains standards and other regulations applicable to the emission of the air pollutant defined as the aggregate group of six greenhouse gases:  carbon dioxide, nitrous oxide, methane, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride. The regulations in this part 1037 apply for all new heavy-duty vehicles, except as provided in § 1037.5§ 1037.5 and 1037.104. This includes electric vehicles and vehicles fueled by conventional and alternative fuels. This also includes certain trailers as described in §§ 1037.5, 1037.150, and 1037.801.

(b) The provisions of this part apply for alternative fuel conversions as specified in 40 CFR part 85, subpart F.