12.5 Commercial Auto Endorsements

Why Endorsements Matter

The Business Auto Coverage Form is a starting point. Real risks need adjustments: an executive who drives only company cars, a firm that rents trucks during peak season, or a hauler with pollution exposure. Endorsements modify the base form to close gaps or add coverage, and the exam tests which endorsement solves which problem.

Drive Other Car (DOC)

Drive Other Car (DOC) extends liability, medical payments, uninsured/underinsured motorist (UM/UIM), and sometimes physical damage to named individuals while using non-owned autos they do not own. It exists because a person who drives only a company vehicle has no personal auto policy - and the BAP normally protects the business, not the individual driving someone else's car personally.

Worked example: A company president drives a corporate car and owns no personal vehicle. On vacation she rents a car and causes an accident. The corporate BAP would not protect her personally for the rental's use. A DOC endorsement naming her supplies that personal protection, behaving like the personal auto coverage she lacks.

Hired and Non-Owned Auto Endorsements

A policy written on owned-only Symbols 2/3/4 has no rental or employee-car protection until these are added; on Symbol 1 (Any Auto) the liability is already built in.

Pollution and Mobile Equipment

• Pollution Liability - Broadened Coverage for Covered Autos (CA 99 48) expands the form's narrow built-in pollution grant. The base form covers pollutants that are fuel, lubricants, or fluids needed to operate the auto; CA 99 48 adds limited coverage for pollutants being transported as cargo or otherwise in the auto.
• Mobile Equipment endorsements clarify the boundary where a self-propelled machine flips between mobile equipment (CGL) and an auto (BAP) - for example, a crane that is mobile equipment on a job site but an auto when driven on a public road.

Rating, Audit, and Other Endorsements

Commercial auto premium is frequently a deposit premium subject to a year-end audit because fleets change mid-term. Other commonly tested endorsements:

Experience Modification - A Rating Concept

Larger commercial auto accounts may be experience rated, where an experience modification factor (mod) multiplies the manual premium based on prior loss history.

Worked example: A fleet's manual premium is $40,000. Favorable loss history yields an experience mod of 0.85. Modified premium = $40,000 x 0.85 = $34,000. A poor-loss-history fleet with a mod of 1.20 would pay $40,000 x 1.20 = $48,000. A mod below 1.00 is a credit (debit if above 1.00).

Exam Trap

Do not confuse Hired Auto (Symbol 8 - the business pays to use it) with Non-Owned Auto (Symbol 9 - employee's own car). And remember DOC protects the named individual personally, while non-owned auto protects the business's vicarious liability only.

Matching the Endorsement to the Gap

The practical skill is diagnosing a fact pattern and naming the fix:

Additional Insured vs. Loss Payee

These are routinely confused. An additional insured receives liability protection under the policy - it can be sued and defended. A loss payee receives only the right to physical damage loss proceeds to protect its financial interest in the vehicle. CA 20 01 can do both for a lessor.

Worked example: A leasing bank is named as additional insured and loss payee on a leased box truck. If the lessee negligently injures a pedestrian, the bank as additional insured is defended for any vicarious claim. If the truck is totaled, the bank as loss payee receives the physical damage proceeds up to its remaining loan balance.

Rental Reimbursement and Transportation Expense

Rental reimbursement (transportation expenses) pays a daily and aggregate amount for a substitute vehicle while a covered auto is being repaired after a covered physical damage loss. A typical schedule is $50 per day up to $1,500. It does NOT apply if the vehicle is down for a non-covered reason such as routine maintenance or a mechanical breakdown that is not a covered peril.

Coordinating With Experience Rating

Endorsements that materially change exposure - adding hired-auto or a large fleet of new units - feed back into rating and the year-end audit. A clean loss history lowers the experience modification factor over time, while frequent claims push it above 1.00, compounding premium cost across the whole fleet.