40 CFR 86.1704-99 - Section numbering; construction.
(a) The model year of initial applicability is indicated by the last two digits of the six-digit group of the section number. A section remains in effect for subsequent model years until it is superseded.
(b) A section reference without a model year suffix shall be interpreted to be a reference to the section applicable to the appropriate model year.
Title 40 published on 2013-07-01
no entries appear in the Federal Register after this date.