Can I reinstate authority after 3 years of inactivity?
Possibly. Whether an older authority can still be reinstated is FMCSA's decision for that specific record. If FMCSA won't reinstate it, a new OP-1 application issues a new MC number, and a new application goes through FMCSA's new-applicant review, including the 10-day protest period after the FMCSA Register notice (49 CFR 365.203T); FMCSA controls the timing.
FMCSA decides case by case whether an older authority can be reinstated or whether a new application is needed, based on the carrier's records.
The practical test: cure the underlying cause and submit the reinstatement request with the $80 fee (49 CFR §360.3T(f)(52)). FMCSA's response tells you whether the old authority can be reinstated. You can check the current authority status in FMCSA's Motus public search (by USDOT number or company name).
Before submitting, make sure the USDOT number itself is current: a missed MCS-150 leads to USDOT deactivation (49 CFR 390.19T(b)(4)), fixed by filing the update. FMCSA has temporarily suspended enforcement and USDOT inactivation for biennial updates due on or after June 1, 2026; the update is still required.
If FMCSA won't reinstate the old authority, the path is a new OP-1 application ($300 FMCSA fee), which issues a new MC number. A new application goes through FMCSA's new-applicant review, including the 10-day protest period after the FMCSA Register notice (49 CFR 365.203T); FMCSA controls the timing. The old MC number stays in FMCSA's history.