12.3 Motor Carrier / Trucking and MCS-90
Key Takeaways
- For-hire trucking is written on the Motor Carrier Coverage Form (CA 00 20), which replaced most uses of the Truckers Form (CA 00 12).
- Trailer interchange coverage protects non-owned trailers in the insured's possession under a written interchange agreement.
- FMCSA financial-responsibility minimums are $750,000 (non-haz freight), $1,000,000 (oil/some hazmat), and $5,000,000 (hazardous materials/explosives).
- The MCS-90 protects the public, pays judgments even for excluded losses up to the federal minimum, and gives the insurer reimbursement rights against the insured.
Motor Carrier and Truckers Coverage Forms
Trucking risks that haul property for others (for-hire carriers) are written on the Motor Carrier Coverage Form (CA 00 20), which in 2010 largely replaced the older Truckers Coverage Form (CA 00 12). Both resemble the Business Auto form but add trucking-specific definitions and a different symbol set, including coverage features for the unique exposures of leased and trailer-interchange equipment.
Key trucking definitions:
- Trailer interchange — the practice of exchanging trailers between carriers under an interchange agreement; the carrier in possession may be contractually liable for damage to a trailer it does not own.
- Private carrier — hauls its own goods; for-hire carrier — hauls others' goods for compensation.
The Motor Carrier form uses Trailer Interchange coverage (a physical-damage-style coverage on non-owned trailers in the insured's possession under a written interchange agreement), and provides liability and physical damage on power units and owned trailers.
Federal financial responsibility and Form MCS-90
Motor carriers operating in interstate commerce must meet Federal Motor Carrier Safety Administration (FMCSA) financial-responsibility minimums under the Motor Carrier Act of 1980. Compliance is evidenced by the MCS-90 endorsement (Endorsement for Motor Carrier Policies of Insurance for Public Liability).
Minimum public liability limits for for-hire interstate carriers:
| Cargo type | Minimum financial responsibility |
|---|---|
| Non-hazardous freight (GVWR 10,001+ lbs) | $750,000 |
| Oil / certain hazardous substances | $1,000,000 |
| Hazardous materials, explosives, poison gas | $5,000,000 |
These are public-protection minimums, not the actual policy limit, which is usually higher.
How the MCS-90 actually works
The MCS-90 is a suretyship-style endorsement that protects the public, not the insured. It obligates the insurer to pay a judgment for public liability (BI, PD, and environmental restoration) caused by the insured's negligence, even if the loss would otherwise be excluded by the policy or the auto involved is not a scheduled covered auto.
Critical exam points:
- It is not true coverage for the insured — the insurer that pays under the MCS-90 has a right of reimbursement from the insured for any amount it would not have had to pay under the policy terms.
- It applies only when the underlying policy does not respond and only up to the federal minimum (e.g., $750,000), regardless of the policy limit.
- It is trumped by the policy when the policy does cover the loss; the MCS-90 is a financial-responsibility backstop, a guarantee to injured members of the public.
Think of it as a guarantee filing: the public gets paid, then the insurer collects back from a non-complying insured.
Motor Carrier Coverage and the MCS-90 Endorsement
Trucking risks use the Motor Carrier Coverage Form (CA 00 12) or Truckers Coverage Form, designed for businesses that haul goods for others. These forms address exposures the standard BACF does not, including trailer interchange (liability for trailers of others in the insured's possession under a written interchange agreement).
The federally mandated MCS-90 endorsement is the most tested trucking concept:
| MCS-90 feature | Detail |
|---|---|
| Purpose | Satisfies federal financial-responsibility law (FMCSA) for interstate motor carriers |
| What it does | Guarantees payment to injured members of the public for BI/PD/environmental damage, even if the underlying policy would not cover the loss |
| Minimum limits | $750,000 general freight; $1,000,000-$5,000,000 for oil/hazardous materials |
| Recovery from insured | The insurer may seek reimbursement from the insured for any payment it would not otherwise have owed |
Exam trap: The MCS-90 is a public-protection surety-like guarantee, NOT first-party coverage - it pays third parties when the policy itself wouldn't, then the insurer recovers from the insured. It exists to satisfy federal financial-responsibility requirements for interstate trucking, with a $750,000 minimum for general freight rising to $5,000,000 for the most hazardous cargo. Trailer interchange and non-trucking ("bobtail") use are related trucking add-ons.
Trailer Interchange and Non-Trucking Use
Two more trucking concepts round out this topic. Trailer Interchange coverage insures the motor carrier's legal liability for loss to trailers of others in its possession under a written interchange agreement - common when carriers swap trailers in intermodal operations. Non-Trucking Liability (NTL, "bobtail") covers an owner-operator's truck while used NOT in the business of the motor carrier to whom the truck is leased - for example, driving home after dropping a load.
Exam tip: Bobtail/non-trucking liability answers the classic question of who covers the leased owner-operator when the rig is used for personal purposes rather than under dispatch - the motor carrier's policy excludes that use, so NTL fills it. Trailer interchange covers damage to others' trailers in the insured's care under interchange agreements. Keep these separate from the MCS-90, which is a federal public-protection guarantee with reimbursement rights against the insured, not first-party trailer or bobtail coverage.
Federal Filings and Proof of Financial Responsibility
Interstate motor carriers must file proof of financial responsibility with the FMCSA. The Form MCS-90 is the endorsement attached to the auto policy that evidences this; a companion BMC-91/BMC-91X filing is the certificate the insurer files with the federal regulator. Intrastate-only Mississippi carriers face state filing requirements instead, but the federal minimums govern any carrier crossing state lines.
Exam tip: The chain to remember is: federal law requires financial responsibility -> the insurer files a BMC-91/91X certificate and attaches the MCS-90 endorsement -> the MCS-90 guarantees payment to the injured public even if the policy excludes the loss -> the insurer then recovers from the insured any amount it would not otherwise have owed. Minimum limits scale with cargo hazard: $750,000 general freight, $1,000,000 for some petroleum, and up to $5,000,000 for the most hazardous materials.
An insurer pays an injured third party $400,000 under the MCS-90 endorsement, even though the truck involved was not a scheduled auto and the loss would otherwise be excluded. What right does the insurer have afterward?
A for-hire interstate carrier hauls non-hazardous freight in a truck with a GVWR over 10,001 lbs. What is the federal minimum public liability financial responsibility?