This part 1420, a consumer product safety standard, prescribes requirements for all terrain vehicles. The requirements for four-wheel ATVs in § 1420.3 take effect on January 1, 2019, and apply to new assembled or unassembled ATVs manufactured or imported on or after that date. The restrictions on three-wheel ATVs stated in § 1420.4 take effect September 13, 2008.
16 C.F.R. §1420.1