12.3 Motor Carrier / Trucking and MCS-90

Trucking and Motor Carrier Coverage Forms

Businesses that haul goods for hire need more than the basic Business Auto form. ISO offers two specialized forms:

• Truckers Coverage Form (CA 00 12) — the older form for businesses hauling goods for others.
• Motor Carrier Coverage Form (CA 00 20) — the modern form, broader than Truckers, covering any business that transports property by auto in commerce, whether for hire or in furtherance of a commercial enterprise.

Both address a problem the basic BACF does not: trailer interchange and the complex liability that arises when carriers borrow trailers, use owner-operators, or operate under leasing arrangements. The Motor Carrier form is now the predominant form on exams.

A recurring exam distinction: the Motor Carrier form applies whether the business hauls for hire OR for itself (a manufacturer running its own trucks), while the older Truckers form was aimed at for-hire haulers. When a question describes a private fleet hauling its own goods over the road, the Motor Carrier form is the better answer than the Truckers form.

Trailer Interchange and Owner-Operators

Trailer Interchange Coverage insures the insured's legal liability for damage to a non-owned trailer in its possession under a written interchange agreement (the trailer-swap practice common in trucking). It is physical-damage coverage on someone else's trailer.

Owner-operator issues arise when an independent driver leases a truck to a motor carrier. The federal leasing rules and the Public Liability requirement make the carrier responsible for the public's safety while the equipment is under lease. Endorsements allocate coverage between carrier and owner-operator.

Common Carrier vs. Private Carrier

Motor Truck Cargo — A Separate Coverage

Liability forms protect against injury to others; they do NOT protect the freight the carrier is hauling. That exposure requires Motor Truck Cargo insurance (an inland-marine coverage), which pays for direct physical loss to the goods of others in the insured's care during transit. A carrier can be fully liability-insured yet still bankrupt by an uninsured cargo loss, so producers must address cargo separately. Exam questions contrast cargo (the property hauled) with the trucker's auto liability (injury caused to the public) — they are distinct policies.

The MCS-90 Endorsement

The MCS-90 (Motor Carrier Endorsement) is a federally mandated endorsement required of interstate motor carriers under the Motor Carrier Act of 1980 and enforced by the FMCSA. It is NOT insurance for the carrier — it is a financial-responsibility surety that guarantees an injured member of the public will be paid up to the federal minimum even if the policy would otherwise exclude the loss.

Federal Minimum Limits

Critical trap: If the insurer pays a claim under the MCS-90 that it would not otherwise owe (e.g., an excluded auto), the carrier must reimburse the insurer. The MCS-90 protects the public, not the insured — it is a public-protection guarantee with a reimbursement right back against the motor carrier.

Filings: BMC-91 / Form E

Proof of the MCS-90 / financial responsibility is made to regulators through filings. The BMC-91 or BMC-91X (now Form MCS-90B / electronic filings) evidences public-liability coverage to the FMCSA for interstate motor carriers; intrastate carriers typically file a Form E with the state. A producer who writes trucking must confirm the proper filing is on record, because operating authority can be suspended without it. The endorsement reaches losses on any auto the carrier operates — not just scheduled autos — which is what makes it a true public guarantee rather than ordinary coverage.

Remember the hierarchy on the exam: the underlying policy pays first if the loss is covered; the MCS-90 is the safety net that pays the public when the policy would not, then recovers from the carrier.

The Motor Carrier Coverage Form

Trucking and for-hire transport risks are written on the Motor Carrier Coverage Form (CA 00 20) (or the older Truckers form), which adapts the business auto form to fleets that haul goods for others. It addresses exposures unique to trucking: trailer interchange, autos operated under owner-operator lease agreements, and the assignment of liability when one carrier's trailer is pulled by another carrier's tractor.

Trailer Interchange and Owner-Operators

The exam tests that trailer-interchange coverage is physical-damage (bailee) coverage on trailers the carrier does not own, separate from liability for the cargo or for bodily injury.

The MCS-90 Endorsement

The MCS-90 (Motor Carrier Act endorsement) is a federally mandated financial-responsibility endorsement for interstate for-hire carriers. It is not coverage in the ordinary sense - it is a surety-like guarantee to the public: the insurer agrees to pay a judgment for public bodily injury and property damage (and, at higher limits, environmental restoration) up to the federal minimum even if the policy would otherwise not cover the loss, and then may seek reimbursement from the insured.

Federal Minimum Limits and Reimbursement

Federal minimums vary by cargo: commonly $750,000 for general freight, $1,000,000 for certain oil/hazardous substances, and $5,000,000 for the most dangerous hazardous materials. Because the MCS-90 pays the public first and recovers from the insured later, it functions as a safety net for injured third parties, not a broadening of the insured's own coverage. Recognizing the MCS-90 as a public guarantee with a reimbursement right against the insured is the central exam point for trucking risks.