Truckers / Motor Carrier Coverage Form
Also known as: Motor carrier coverage form, CA 00 20, CA 00 12, Truckers form, Motor carrier form
The truckers coverage form (ISO form CA 00 12) and the newer motor carrier coverage form (ISO form CA 00 20) are the auto liability and physical-damage policy forms built specifically for businesses that haul property for hire. Where a general contractor or restaurant buys a plain business auto policy on the CA 00 01 form, a licensed motor carrier operating under FMCSA authority needs the trucking form because it addresses exposures the standard form ignores: hauling other people's freight, pulling interchanged trailers, and the reality that trucks are frequently hired, leased, or operated by owner-operators. The motor carrier form (CA 00 20) largely replaced the older truckers form and is broader — it more easily covers autos the insured hires, borrows, or uses under lease, which matters when carriers run mixed owned-and-leased fleets.
For a small-business buyer, choosing the right form is not academic — it drives whether a claim is paid. Both forms use covered-auto symbols to define exactly which vehicles are insured (the trucking forms use symbols 61–68 rather than the 1–9 range on the business auto form), and both integrate the MCS-90 endorsement and the truckers public-liability filing that federal law requires for interstate for-hire carriers. A key distinction: the trucking forms contain a private-passenger-type exclusion and are underwritten around freight radius, commodity, and gross vehicle weight rather than the light-vehicle assumptions baked into a standard commercial auto quote. If a for-hire carrier is written on the wrong form, gaps around hired units, trailer interchange, and filing compliance can leave the insured personally exposed.
A frequent point of confusion is how these primary trucking forms relate to the specialty coverages an owner-operator buys when leased to a motor carrier. The truckers/motor carrier form is the carrier's own liability policy while the truck is dispatched under load; by contrast, bobtail and non-trucking liability cover an owner-operator's tractor only when it is used outside the motor carrier's business (personal use or deadheading without a dispatch). Cargo damage is handled separately by motor truck cargo insurance, not by the auto form. Understanding which form governs — and when it responds — is the difference between a smooth freight claim and an uncovered loss.
Real-world scenario
Cascade Freight Lines, LLC, a for-hire motor carrier based in Salem, Oregon, runs six tractors hauling dry-van freight across the Pacific Northwest. When the company applied its commercial auto program, the agent placed it on the Truckers / Motor Carrier Coverage Form rather than a standard business auto policy, because the trucking form is built for fleets that haul property for others and carry federally mandated filings. Cascade bought a combined single limit of $1,000,000 for liability, added the MCS-90 endorsement required by the FMCSA, and scheduled physical damage on each unit with a $2,500 deductible. Annual premium came to $28,500, roughly $4,750 per power unit, with a $7,125 (25%) down payment.
Cascade also scheduled motor truck cargo at a $100,000 limit. Its newest tractor was valued at $145,000 and each 53-foot trailer at $45,000. Ten months in, a driver jackknifed on black ice on I-84, striking a passenger car. The bodily-injury claim settled at $325,000, third-party property damage ran $60,000, and the cargo of packaged food was ruined for a $38,000 loss.
The insurer paid a combined $423,000 under the liability and cargo sections, absorbed $22,000 in legal defense costs, and covered Cascade's own tractor repair of $18,400 after the $2,500 deductible. Because the loss stayed under the $1,000,000 limit, no personal assets were exposed. The trucking form did in one event what would have cost Cascade far more than its annual premium out of pocket.
How it affects your premium
Premiums on the Truckers / Motor Carrier Coverage Form are driven far more by operations and exposure than by a flat per-truck rate. Underwriters weigh the following:
- Radius of operation — a local delivery fleet costs much less than a long-haul carrier; see radius of operation for how local, intermediate, and long-haul tiers are priced.
- Commodity hauled — hazardous materials, refrigerated food, and high-value electronics carry higher liability and cargo rates than general dry freight.
- Covered auto symbols — the business auto symbols selected (owned, hired, non-owned, trailers) determine which vehicles trigger coverage and directly shift premium.
- Driver quality and MVRs — CDL experience, age, and motor-vehicle records; a fleet with clean records earns credits, while accidents and violations surcharge the rate.
- Limits and deductibles — moving from a $750,000 to a $1,000,000 limit or lowering the physical-damage deductible raises cost; higher deductibles lower it.
- Loss history and safety scores — prior claims and FMCSA CSA/BASIC scores tied to the fleet's USDOT number are heavily weighted in renewal pricing.
- Vehicle values and count — newer, higher-value tractors and trailers increase the physical-damage portion of the premium.
Common misconceptions
Myth: A regular business auto policy is the same thing as the truckers form, so any commercial auto policy will satisfy my authority.
Reality: The Truckers / Motor Carrier Coverage Form is a distinct ISO form written for carriers hauling property for others, and only it readily accommodates the federal filings and cargo endorsements a for-hire fleet needs. A standard business auto policy usually will not support your operating authority.
Myth: My truckers form covers my truck no matter what I am doing with it, including personal or non-dispatched use.
Reality: When a truck is operated without a load and off dispatch, the liability section may not respond, which is why carriers add non-trucking liability (often called bobtail coverage). Cargo you are hauling for a fee is also not automatically covered under liability.
Myth: Cargo I am carrying is automatically insured under the truckers form's liability coverage.
Reality: Liability pays for injury or damage you cause to others, not for the freight itself. Damage to cargo requires separate motor truck cargo insurance, and property in your care at a terminal may need on-hook coverage.
Frequently asked questions
Who needs the Truckers / Motor Carrier Coverage Form instead of a business auto policy?
Does the truckers form include cargo coverage?
How does bobtail or non-trucking use affect my coverage?
What happens if I pull a trailer that belongs to another carrier?
How is my physical-damage deductible applied on the truckers form?
Sources cited
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