The Federal Insurance Mandate

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.

What MCS-90 Actually Does

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:

• Your insurer cannot deny a third-party claim based on policy exclusions if MCS-90 applies
• The endorsement covers the vehicle, not just the named insured — so leased equipment scenarios get complex
• Coverage follows the truck, not the driver, for public liability purposes
• The insurer has a right of reimbursement from you after paying a claim you violated the policy on

Minimum Liability Limits by Commodity

These are federal minimums — shippers, brokers, and contracts routinely require higher limits ($1M–$2M). Check every broker packet before hauling.

Other Mandatory FMCSA Filings

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 Basics

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 — Federal Cargo Liability

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:

• Carriers are held to a near-strict liability standard — you're liable for cargo loss unless you prove one of the five Carmack defenses
• The shipper must prove: delivery to carrier in good condition, delivery in damaged condition (or non-delivery), and the amount of damages
• Carmack preempts state law claims — the shipper cannot sue you under state tort law, only under Carmack

The Five Carmack Defenses

A carrier is not liable if the loss was caused by:

• Act of God — unforeseeable natural event (tornado, flood) — must be unforeseeable and unavoidable
• Act of public enemy — terrorism or military action (extremely rare)
• Shipper's own negligence — improper packaging, concealed damage, or overweight loading by shipper
• Inherent nature of the goods — perishables that spoil, fragile items that break due to their nature
• Act of public authority — government seizure or quarantine

Limiting Carmack Liability

Carriers can limit their Carmack liability below actual cargo value if:

• The carrier offers two or more rates — one with full liability, one with limited liability
• The shipper has a fair opportunity to choose the higher rate
• The limitation is stated clearly in the bill of lading

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.

The Owner-Operator Coverage Gap

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.

Permanent Lease vs. Trip Lease

When an owner-operator is under a permanent lease to your company:

• Your MCS-90 and liability coverage extends to the leased vehicle while operating under your authority
• The carrier is responsible for public liability during the lease period
• The owner-operator's personal auto liability policy typically excludes commercial use

During a trip lease or between leases ("bobtailing"), the owner-operator is on their own.

Bobtail Insurance

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:

• Driving empty after delivering a load, before next pickup
• Driving to/from a truck stop or shop
• Personal errands in the truck (varies by policy)

Non-Trucking Liability (NTL)

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.

Occupational Accident Insurance

Owner-operators are independent contractors and typically not covered by workers' comp. Occupational accident (OCC/ACC) insurance provides:

• Accidental death and dismemberment
• Medical expense coverage for on-the-job injuries
• Disability income if injured and unable to work

Many carriers require OCC/ACC in their lease agreements to limit their own liability exposure for injured owner-operators.

Commercial Auto Liability — Fleet Policies

A fleet liability policy covers all scheduled vehicles under one policy. Understanding the structure helps you manage costs and avoid gaps.

Policy Structure

Declarations page: Lists named insured, policy period, covered vehicles (or "Any Auto"), premium breakdown, and liability limits.

Coverage parts:

• Part I — Liability: Bodily injury and property damage to third parties; includes defense costs
• Part II — Physical Damage: Comprehensive and collision for your own vehicles (not required by FMCSA)
• Part III — Cargo: Loss/damage to freight in your custody
• Part IV — Medical Payments / PIP: Covers driver medical expenses regardless of fault

Named Insured vs. Additional Insured

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 and Non-Owned Auto (HNOA)

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.

Umbrella and Excess Liability

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.

Reading a Certificate of Insurance

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.

ACORD 25 Section by Section

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.

Common COI Red Flags

• Expired policy — check effective and expiration dates against today
• Limits below contract requirements — e.g., contract requires $1M but COI shows $750K
• Wrong named insured — DBA vs. legal entity discrepancy
• Missing endorsements — additional insured not listed in description
• Admitted vs. surplus lines carrier — know your state's rules
• "Claims made" vs. "occurrence" policy — matters if claim is filed after policy expires

Cancellation and Lapse Procedures

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:

• FMCSA suspends your operating authority within days
• Any loads moved during the lapse are uninsured
• Reinstatement requires re-filing proof of insurance and may require a new application