12.3 Motor Carrier / Trucking and MCS-90

The Motor Carrier Coverage Form

Businesses that haul property by auto for hire are insured on the Motor Carrier Coverage Form (ISO CA 00 20), which largely replaced the older Truckers Coverage Form (CA 00 12). It is built like the Business Auto Coverage Form - same liability and physical-damage structure and the same symbol mechanic - but adds provisions for the trucking realities of leased and interchanged trailers.

A motor carrier is anyone providing transportation of property by auto in the furtherance of a commercial enterprise. The form distinguishes a private carrier (hauls its own goods) from a for-hire carrier (hauls others' goods for a fee). For-hire interstate carriers fall under federal regulation.

Federal Financial-Responsibility Minimums

Interstate for-hire motor carriers must meet Federal Motor Carrier Safety Administration (FMCSA) minimum liability limits, set under the Motor Carrier Act of 1980. These are heavily tested:

These are MINIMUMS for the protection of the public; most carriers buy $1,000,000 CSL or more regardless of cargo class.

The MCS-90 Endorsement

The MCS-90 (Motor Carrier Endorsement, formally the Endorsement for Motor Carrier Policies of Insurance for Public Liability) is required to demonstrate federal financial responsibility. The single most-tested point:

The MCS-90 is NOT coverage - it is a surety-like guarantee to the public. It ensures an injured member of the public is paid for BI or PD up to the federal minimum even if a policy exclusion (e.g., the auto was not a covered auto, or cargo class was misdescribed) would otherwise deny the claim.

The reimbursement mechanism: when the insurer pays a claim only because the MCS-90 forced payment - a loss the policy itself excluded - the motor carrier must reimburse the insurer for that payment plus defense costs. The endorsement therefore protects the public, not the carrier.

MCS-90 Worked Scenario

A carrier's policy lists Symbol 7 (scheduled autos) for liability. The carrier operates a truck it forgot to schedule, and that truck injures a motorist, who recovers a $400,000 judgment.

• Under the policy alone: the unscheduled truck is not a covered auto, so liability would be denied.
• Under the MCS-90: because federal law guarantees the public's recovery, the insurer must pay the motorist up to the federal minimum ($750,000 here).
• Aftermath: the carrier is legally obligated to reimburse the insurer the full $400,000 (plus costs), because the MCS-90 paid a loss the policy excluded.

Exam takeaways:

• MCS-90 pays the public, never the insured's own property or cargo.
• It applies only to BI/PD to others, up to the federal financial-responsibility limit.
• It triggers carrier reimbursement when the underlying policy would not have paid.

Motor Truck Cargo Coverage

Auto liability excludes property in the carrier's care, custody, or control - so the freight a trucker hauls is never covered by the auto policy. Motor truck cargo insurance fills this gap, insuring the carrier's legal liability for loss or damage to the cargo of others while in transit.

A related distinction: a common carrier is liable for cargo as a near-insurer (limited defenses such as acts of God), while a contract carrier is liable only per the terms of its contract. This affects how much cargo coverage a carrier should buy.

Trailer Interchange

Trailer interchange coverage insures the carrier's legal liability for physical damage to trailers of others in its possession under a written interchange agreement. The Motor Carrier Form addresses this exposure that arises when carriers swap trailers - a coverage the plain Business Auto Form does not contemplate.

Primary vs. Non-Trucking Use (Bobtail) Coverage

Owner-operators who lease their trucks to a motor carrier raise a coverage-timing question the exam loves. While under dispatch for the carrier, the carrier's policy responds. When the trucker drives the rig without a load and not in the carrier's business (deadheading home, running a personal errand), that is non-trucking use, commonly called bobtail coverage.

The Truckers / Motor Carrier liability automatically excludes a covered auto while used in the business of anyone other than the named insured, which is exactly why owner-operators carry bobtail coverage for the gap periods.

Worked Cargo Limit Example

A contract carrier hauls electronics worth $120,000 in a single trailer but buys a motor truck cargo limit of only $75,000 per vehicle with a $1,000 deductible. A covered fire destroys the load.

• Loss to cargo: $120,000
• Policy pays: $75,000 limit - $1,000 deductible = $74,000
• Carrier's uninsured exposure to the shipper: $45,000 plus the deductible.

The lesson: cargo limits are per-vehicle and must reflect the maximum value any one truck carries, not the average. Because a common carrier is liable almost as an insurer of the goods, under-buying the cargo limit leaves a large legal-liability gap that neither the auto policy nor the MCS-90 (which protects only the public) will fill.