BMC-91 and BMC-91X are prescribed FMCSA insurance certificates, not policies and not ordinary certificates of insurance. When a motor carrier's operating authority requires public-liability proof, an FMCSA-registered insurer or financial-responsibility filer submits the applicable form electronically for the exact authority record.
49 CFR 387.313 distinguishes the forms:
BMC-91X is not limited to a multi-insurer tower, and no market-wide usage percentage should be claimed without current FMCSA data. A surety uses BMC-82 rather than BMC-91, while authorized self-insurance follows a separate process.
The filing obligation depends on the entity, operation, cargo, vehicle, and authority—not on possession of a USDOT number alone. FMCSA's current chart identifies insurance-filing requirements for for-hire motor carriers, passenger carriers, household-goods entities, brokers, and freight forwarders.
Certain private hazardous-material carriers are subject to Part 387 financial-responsibility limits and must maintain prescribed proof. That does not mean every domestic private hazmat carrier automatically needs a BMC-91 operating-authority filing. Determine the underlying financial-responsibility requirement and the separate operating-authority filing duty for the actual operation.
The insurer or other registered filer submits the federal filing. The motor carrier should still verify that its legal name, identifiers, authority, and filing record match.
Since May 19, 2026, FMCSA registration and filing activity has been handled through Motus. New registrants receive randomized USDOT and docket numbers, and each authority is tracked separately. Public users can search an entity's registration record in Motus; current authority and insurance datasets are also available through FMCSA's Open Data Program.
A pending record may identify the reason, including a pending BOC-3 process-agent filing, pending financial-responsibility filing, or FMCSA review. FMCSA publishes no universal posting or activation time. Confirm the accepted filing and active authority rather than relying on a transmission confirmation or an estimated number of business days.
A BMC-91 or BMC-91X cancellation generally does not become effective until 30 days after FMCSA receives the prescribed notice. A replacement accepted by FMCSA can terminate the retiring certificate on the replacement's effective date. The notice period is not a grace period to operate uninsured.
If required proof is absent when cancellation becomes effective, the authority is exposed to suspension or revocation proceedings. Motus distinguishes reinstating a suspended authority from reapplying after revocation, so follow the action shown for the specific record.
Federal cargo security applies to household-goods motor carriers and household-goods freight forwarders. BMC-34 is the cargo insurance certificate and BMC-83 is the cargo surety form. Brokers and specified freight forwarders use BMC-84 or BMC-85 for the separate $75,000 financial-security requirement. These forms are not substitutes for BMC-91/BMC-91X public-liability proof.
Coordinate the application, effective date, and federal filing with a licensed trucking agent and the registered filer. Review commercial truck insurance or start the commercial trucking application.
Reviewed August 17, 2026. This is general information, not legal advice or a coverage determination. Confirm the current FMCSA record, filing, policy, and authority requirements for the actual operation.
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