49 CFR § 397.221 - Timeliness.

---
identifier: "/us/cfr/t49/s397.221"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 397.221 - Timeliness."
title_number: 49
title_name: "Transportation"
section_number: "397.221"
section_name: "Timeliness."
chapter_name: "FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "B"
subchapter_name: "FEDERAL MOTOR CARRIER SAFETY REGULATIONS"
part_number: "397"
part_name: "TRANSPORTATION OF HAZARDOUS MATERIALS; DRIVING AND PARKING RULES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 322; 49 CFR 1.87. Subpart A also issued under 49 U.S.C. 5103, 31136, 31502, and 49 CFR 1.97. Subparts C, D, and E also issued under 49 U.S.C. 5112, 5125."
regulatory_source: "36 FR 4876, Mar. 13, 1971, unless otherwise noted."
cfr_part: "397"
---


# 397.221 Timeliness.

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.