Code of Federal Regulations Title 40. Protection of Environment § 40.88.301–93 General applicability

(a) The requirements of this subpart apply to the following:

(b) The requirements of §§ 88.302–93, 88.303–93, 88.311–93, 88.312–93, and 88.313–93 of this part apply to fleets which voluntarily purchase and operate Inherently Low–Emission Vehicles (ILEVs).

(c) References in this subpart to engine families and emission control systems shall be deemed to refer to durability groups and test groups as applicable for manufacturers certifying new light-duty vehicles and light-duty trucks under the provisions of 40 CFR part 86, subpart S.