12.2 Commercial Auto Liability and Physical Damage
Key Takeaways
- Commercial auto liability uses a Combined Single Limit (CSL) covering BI and PD together, unlike personal split limits.
- Supplementary payments (bail bonds to $2,000; lost earnings $250/day; defense costs) are paid ABOVE the limit.
- Cargo in the insured's own truck is excluded from liability (care, custody, or control) and from auto physical damage.
- Physical damage settles at the lesser of ACV or repair cost, minus the deductible; ACV = replacement cost - depreciation.
- Hitting an animal is comprehensive; swerving and hitting a fixed object is collision.
Covered Autos Liability (Section II)
The insurer pays all sums an insured legally must pay as damages for bodily injury (BI) or property damage (PD) caused by an accident and resulting from the ownership, maintenance, or use of a covered auto. The insurer has the right and duty to defend, and the duty ends only when the limit is exhausted by payment of judgments or settlements.
Coverage triggers
| Trigger | Example |
|---|---|
| Ownership | A defect in the insured's owned truck causes a crash |
| Maintenance | Neglected brakes fail and the truck rear-ends a car |
| Use | The driver runs a light and injures a pedestrian |
| Loading/Unloading | A driver drops freight on a customer's foot while unloading |
Combined Single Limit
Commercial auto liability is almost always a Combined Single Limit (CSL) — one dollar amount (e.g., $1,000,000) covering BI and PD in any combination from a single accident. This contrasts with split limits (e.g., 100/300/50) common on personal auto. The CSL is the most the insurer pays for all damages from any one accident, regardless of how many insureds, claims, or vehicles are involved.
Split-limit math reminder: 100/300/50 means $100,000 per person BI, $300,000 per accident BI, $50,000 per accident PD. Under a $300,000 CSL, a loss of $250,000 BI plus $40,000 PD ($290,000 total) is fully paid; under 100/300/50 the per-person cap could leave a single severely injured claimant short.
Supplementary Payments — Above the Limit
These are paid IN ADDITION to the liability limit, so they never erode claimant money:
| Payment | Amount |
|---|---|
| Defense costs / allocated expenses | No dollar cap until limit exhausted |
| Bail bonds | Up to $2,000 |
| Appeal / release-of-attachment bonds | Actual cost (no duty to apply) |
| Post-judgment interest | Until insurer pays/tenders the limit |
| Insured's loss of earnings to assist defense | Up to $250 per day |
Key Liability Exclusions
| Exclusion | What It Removes | Notable Exception |
|---|---|---|
| Expected/Intended Injury | Harm the insured intended | Reasonable force to protect persons/property |
| Contractual Liability | Liability assumed by contract | An 'insured contract' (e.g., lease of the auto) |
| Workers' Compensation | Obligations under WC law | None — buy WC separately |
| Fellow Employee | BI to a co-worker | Removable by endorsement |
| Care, Custody, or Control | Damage to cargo/property in the insured's care | Liability for a leased/rented covered auto |
| Pollution | Most pollutant releases | Limited fuel-system / in-transit situations |
High-yield trap: Damaged cargo inside the insured's own truck is NOT covered by liability (care, custody, or control). Cargo requires motor truck cargo or inland marine coverage. Employee injuries route to workers' compensation, not the auto form.
Physical Damage (Section III)
Three coverage options apply to the insured's OWN covered autos:
- Comprehensive — all direct loss EXCEPT collision/overturn (fire, theft, vandalism, glass, flood, hail, animal strikes).
- Specified Causes of Loss — a narrower, named-peril alternative (fire, lightning, explosion, theft, windstorm, hail, earthquake, flood, mischief, sinking/derailment) at lower premium.
- Collision — impact with another object or overturn.
Valuation and ACV
Loss is settled at the lesser of actual cash value (ACV) or the cost to repair/replace, minus the deductible. ACV = replacement cost minus depreciation.
Worked ACV example: A box truck has a replacement cost of $60,000 and is 40% depreciated, so ACV = $60,000 - $24,000 = $36,000. With a $1,000 collision deductible and a total loss, the insurer pays $36,000 - $1,000 = $35,000.
Deductible mechanics and glass
Comprehensive and collision carry separate deductibles. Many forms allow a full glass (no-deductible) option for windshield repair to encourage early fixes. Towing and labor is a small flat add-on (commonly $25 to $75 per disablement) available only when physical damage is carried.
Trap: Hitting a deer is comprehensive (animal contact), but swerving to miss the deer and striking a guardrail is collision.
Other-Than-Collision Coinsurance and Stated Amount
Most commercial auto physical damage is written on an actual cash value basis with no coinsurance, but specialty units can be insured on a stated amount basis — the insurer pays the LEAST of stated amount, ACV, or repair cost. This protects the insurer from over-insurance on customized rigs while letting the insured pre-agree a value.
Stated-amount example: A custom food truck is insured at a stated amount of $80,000. After a fire its ACV is determined to be $72,000 and repair would cost $95,000 (a constructive total loss). The insurer pays the LEAST figure that applies — $72,000 ACV, less the deductible — even though the stated amount was higher. Stated amount caps recovery; it does not guarantee it.
Out-of-State and Two-or-More-Policies Conditions
The Out of State liability provision automatically increases the policy limit or adds a coverage (such as no-fault) when a covered auto enters a state with higher minimums than the home state, so the insured never needs a second policy to drive interstate.
The Two or More Coverage Forms or Policies condition prevents stacking: if the same accident is covered by two of the insurer's policies, it pays no more than the highest single applicable limit. For hired and borrowed autos, the Business Auto coverage is typically excess over other collectible insurance (such as the rental company's own coverage); for the named insured's owned autos it is primary.
A covered truck with an ACV of $42,000 is totaled in a collision. The collision deductible is $2,000. How much does the insurer pay?
A delivery van's load of electronics is destroyed when the van overturns. The business carries Symbol 1 liability and Symbol 7 comprehensive/collision on the van. Are the damaged electronics (the cargo) covered?