86.404-78—Section numbering.
(a)
The year of initial applicability of a section is indicated by its section number. The two digits following the hyphen designate the first model year for which a section is effective. A section remains effective until superseded.
Code of Federal Regulations
Example:
Section 86.411-78
applies to 1978 and subsequent model years until it is superseded. If a § 86.411-81
is promulgated it would take effect beginning with 1981; § 86.411-78
would apply to years 1978 through 1980.
(b)
A reference to a section without a year designation implies the appropriate model year.
Code of Federal Regulations
Example:
When considering 1979 vehicles a reference to § 86.411
implies § 86.411-79
. However if no § 86.411-79
has been promulgated then § 86.411-78
is implied; See paragraph (a) of this section.