Plain definitions for the authority and insurance terms you'll run into.
- USDOT number
- A carrier's permanent federal safety ID. Every active carrier has exactly one.
- Operating authority
- FMCSA's permission to operate for hire. Tracked as "Authorized For…" or "Not Authorized."
- MC number
- The operating-authority docket for for-hire carriers and brokers. Being phased toward USDOT-only over time.
- FF number
- Operating authority for a freight forwarder.
- BIPD insurance
- Bodily Injury & Property Damage — the public-liability coverage carriers must keep on file.
- Cargo insurance
- Covers loss or damage to the freight. Federally required only for household-goods carriers; often required by contract elsewhere.
- BMC-91 / 91X
- The form an insurer files with FMCSA to prove a carrier's liability coverage.
- BMC-84 / 85
- A broker's or forwarder's $75,000 surety bond (84) or trust fund (85).
- MCS-90
- A federal endorsement guaranteeing the public is paid up to the minimum even if the policy itself wouldn't — a safety net, not proof the carrier's own coverage is broad.
- BOC-3
- Designation of a legal-process agent in every state — required to hold interstate authority.
- Pending cancellation
- An insurer's filed notice that coverage will end on a future date. Still "on file," but a countdown.
- Revocation / reinstatement
- FMCSA pulling authority for lapsed insurance or BOC-3 — and restoring it once the carrier fixes the lapse.
- Motus
- FMCSA's registration and insurance system, live for everyone since May 2026 — it replaced the old URS and L&I portals.
Current as of June 2026. Insurance minimums follow 49 CFR 387. FMCSA's Motus registration and insurance system went live in May 2026 (replacing URS and Licensing & Insurance); MC numbers remain valid, and a USDOT-only identifier is only proposed.
This guide is educational. It explains how to read FMCSA's public operating-authority and insurance records and does not modify any regulation, and it is not legal or financial advice. Coverage shown "on file" is a filing, not a guarantee for any specific load. No real carrier data appears on this page.