49 C.F.R. § 397.221 Timeliness.
Title 49 - Transportation
If the Administrator fails to take action on the application within 90 days of serving the notice required by §397.217(d), the applicant may treat the application as having been denied in all respects.
Title 49: Transportation
PART 397—TRANSPORTATION OF HAZARDOUS MATERIALS; DRIVING AND PARKING RULES
Subpart E—Preemption Procedures
§ 397.221 Timeliness.
