49 CFR § 37.13
Effective date for certain vehicle specifications
November 18, 2020
(a) The vehicle lift specifications identified in §§38.23(b)(6), 38.83(b)(6), 38.95(b)(6), and 38.125(b)(6) of this title apply to solicitations for vehicles under this part after January 25, 1992.
(b) The vehicle door height requirements for vehicles over 22 feet identified in §38.25(c) of this title apply to solicitations for vehicles under this part after January 25, 1992.
[56 FR 64215, Dec. 9, 1991]