49 C.F.R. § 106.25 Revising regulations without first issuing an ANPRM or NPRM.
Title 49 - Transportation
PHMSA may add, amend, or delete regulations without first issuing an ANPRM or NPRM in the following situations: (a) We may go directly to a final rule or interim final rule if, for good cause, we find that a notice of proposed rulemaking is impracticable, unnecessary, or contrary to the public interest. We must place that finding and a brief statement of the reasons for it in the final rule or interim final rule. (b) We may issue a direct final rule (see §106.40).
Title 49: Transportation
PART 106—RULEMAKING PROCEDURES
Subpart A—PHMSA Rulemaking Documents
§ 106.25 Revising regulations without first issuing an ANPRM or NPRM.

