Every motor carrier operating in interstate commerce must file proof of financial responsibility with the FMCSA before receiving operating authority. This isn't optional — your MC number isn't active until insurance is confirmed.
The primary filing mechanism is the MCS-90 endorsement, a standardized form that your insurer files electronically through the FMCSA's systems. The MCS-90 is not the policy itself — it's an endorsement attached to your primary auto liability policy that makes it compliant with federal law.
The MCS-90 endorsement creates a public liability guarantee: even if the insured (your company) violated policy terms, the insurer must pay claims up to the minimum limit, then seek reimbursement from you. This protects the public, not the carrier.
Key implications:
These are federal minimums — shippers, brokers, and contracts routinely require higher limits ($1M–$2M). Check every broker packet before hauling.
BMC-91 / BMC-91X: The primary form for public liability. BMC-91 is for policies covering specific vehicles; BMC-91X covers all vehicles owned or operated. Most carriers use BMC-91X (blanket coverage).
BMC-34: Cargo insurance filing. Required for household goods carriers; optional but common for general freight. Documents your cargo coverage with FMCSA.
BMC-84 / BMC-85: Freight broker / freight forwarder bonds. $75,000 surety bond (BMC-84) or trust fund (BMC-85). Not required for carriers but required if you also broker loads.
Cargo insurance covers loss or damage to freight in your care, custody, and control. Unlike liability insurance (which protects third parties), cargo insurance protects the value of the goods you're hauling.
Cargo coverage is not federally required for most carriers (except household goods), but it is almost universally required by shippers and brokers. You will not get loads without it.
The Carmack Amendment (49 U.S.C. § 14706) is federal law that governs carrier liability for cargo loss and damage in interstate commerce. Under Carmack:
A carrier is not liable if the loss was caused by:
Carriers can limit their Carmack liability below actual cargo value if:
The released value rate (e.g., $0.50/lb for household goods) must be disclosed. Courts invalidate limitations if the shipper wasn't given a real choice.
Owner-operators (independent contractors leased to motor carriers) face a unique coverage puzzle that causes significant claim denials and litigation. Understanding the gaps is essential for both the carrier and the owner-operator.
When an owner-operator is under a permanent lease to your company:
During a trip lease or between leases ("bobtailing"), the owner-operator is on their own.
Bobtail insurance covers the tractor when it's not under dispatch — no trailer attached, or driving with a trailer but not under a load or on behalf of a carrier. This is the gap between the carrier's MCS-90 coverage and personal auto coverage.
Situations bobtail covers:
Non-trucking liability is similar to bobtail but broader — it covers the truck when used for personal or business purposes other than for the carrier. NTL is sometimes called "deadhead" coverage, though that term technically means driving an empty trailer.
Owner-operators are independent contractors and typically not covered by workers' comp. Occupational accident (OCC/ACC) insurance provides:
Many carriers require OCC/ACC in their lease agreements to limit their own liability exposure for injured owner-operators.
A fleet liability policy covers all scheduled vehicles under one policy. Understanding the structure helps you manage costs and avoid gaps.
Declarations page: Lists named insured, policy period, covered vehicles (or "Any Auto"), premium breakdown, and liability limits.
Coverage parts:
The named insured is the entity that purchased the policy. Additional insureds are other parties added by endorsement — typically required by shippers, brokers, and lessors. An additional insured gets coverage for claims arising from your operations.
Loss payees are different — they have a right to claim payment on physical damage (typically the lienholder on financed vehicles).
Hired auto covers vehicles rented/leased by the company for business use. Non-owned auto covers employee-owned vehicles used for company business. A fleet policy without HNOA leaves gaps if employees use personal vehicles.
An umbrella policy provides coverage above the primary liability limits and may drop down to cover gaps. An excess policy only sits above primary limits without dropping down. For large fleets or hazmat carriers, $5M+ umbrella coverage is common.
The Certificate of Insurance (COI) — typically ACORD Form 25 — is the standard document used to verify coverage. Knowing how to read one protects you from uninsured exposures.
Producer: The insurance agent/broker who issued the certificate.
Insured: The policyholder — should match the company name on your contracts exactly. Discrepancies cause claim disputes.
Insurers: The insurance company names and NAIC codes. Verify they're admitted carriers in the relevant state and financially rated (A.M. Best A- or better recommended).
Coverage grid: Lists each coverage type, policy number, effective/expiration dates, and limits. Read the limits carefully — $1,000,000 per occurrence vs. $1,000,000 aggregate are very different.
Certificate holder: The party requiring the COI. If this isn't the right party or address, the certificate may not satisfy the contract requirement.
Description of operations / special provisions: This section lists additional insured endorsements, waivers of subrogation, and notice of cancellation provisions. If a contract requires 30-day notice of cancellation and this box is blank, you're not compliant.
When a policy cancels, the insurer must provide notice to the certificate holder (if the policy or endorsement requires it). FMCSA requires 35-day advance notice for insurance cancellations on active authorities. If your policy lapses: