6.4 Part C Uninsured/Underinsured Motorists

Part C - Uninsured and Underinsured Motorists

Part C pays the insured's own bodily injury damages when an at-fault driver is uninsured or underinsured. It is a first-party coverage that effectively steps into the shoes of the negligent driver's missing liability insurance.

Because the insured must be legally entitled to recover from the other driver, fault still matters - Part C is not a no-fault coverage. Most states require insurers to offer uninsured motorist coverage, and many mandate it unless the insured rejects it in writing. UM limits are usually written to match the insured's Part A liability limits, though the insured may sometimes select lower amounts where state law allows.

Three Categories of Uninsured Motorist

1. No insurance: the at-fault vehicle carries no liability coverage at all.
2. Hit-and-run: an unidentified driver causes injury and flees the scene; many states require physical contact between the vehicles for the claim to qualify.
3. Insolvent insurer: the at-fault driver's insurer becomes insolvent or denies coverage on the claim.

Underinsured Motorist (UIM) applies in a different situation: the at-fault driver HAS liability insurance, but the limit is less than the insured's damages (or, in some states, less than the insured's own UM limit). UIM is therefore excess over the at-fault driver's liability limit.

UM/UIM Coverage Types

In no-fault states, UMPD is frequently unavailable because physical damage is handled under Part D or PIP. The covered persons under Part C mirror Part B: you and family members in any auto or as pedestrians, plus other persons while occupying your covered auto. As with Med Pay, you cannot bring a UM claim using a vehicle you own but did not insure on the policy.

UM and UIM are sometimes written as a single combined coverage and sometimes split apart, and a few states fold them into one limit. Regardless of structure, the analysis is the same: identify whether the at-fault driver had no coverage (UM) or insufficient coverage (UIM), confirm the insured is legally entitled to recover, and then apply the limit and the state's offset rule.

Worked UIM Example

The insured suffers $120,000 in bodily-injury damages. The at-fault driver carries $50,000 liability limits. The insured's own UIM limit is $100,000.

Two offset methods determine the UIM payment, and the result differs by state:

• Difference-in-limits (excess) method: UIM pays its limit minus the other driver's limit = $100,000 - $50,000 = $50,000. Combined with the $50,000 collected from the at-fault driver, the insured recovers $100,000 total - still $20,000 short of the $120,000 loss.
• Damages-minus-recovery method (used in some states): UIM pays the damages minus amounts already recovered, capped at the UIM limit = $120,000 - $50,000 = $70,000, which is below the $100,000 cap, so UIM pays $70,000.

Trap: always apply your state's offset rule - the same facts produce different answers under each method.

Key Part C Rules and Exclusions

Several conditions narrow Part C and appear repeatedly on the exam. The first three define when a claim is even valid:

• The insured must be legally entitled to recover from the uninsured or underinsured driver, so fault is required.
• A vehicle owned by the named insured or a family member but not insured under this PAP is NOT an uninsured motor vehicle - you cannot make a UM claim against your own uninsured car.
• Settling with the at-fault party without the insurer's consent can void UM rights if it prejudices the insurer's subrogation against the responsible driver.

The remaining rules address what is not an uninsured vehicle and how limits combine:

• Part C does not apply to a vehicle owned by or furnished for the regular use of the insured.
• Government-owned or properly self-insured vehicles are generally not considered 'uninsured.'
• UM/UIM may be stacked or non-stacked depending on state law and policy wording; stacking lets the insured add limits across multiple covered autos to increase available coverage.

UM vs. UIM and the Stacking Question

Uninsured motorists (UM) pays when the at-fault driver has no liability insurance, is a hit-and-run, or whose insurer is insolvent. Underinsured motorists (UIM) pays when the at-fault driver has some liability coverage but less than the insured's damages — UIM fills the gap up to the insured's UIM limit. Many states allow stacking (combining UM/UIM limits across multiple owned vehicles or policies); others prohibit it by anti-stacking language. UM generally covers bodily injury, while UMPD (property damage) is optional and often subject to a deductible.

Required Offer, Rejection, and Limits Relationship

Most states require insurers to offer UM/UIM at limits equal to the policy's liability limits; the insured may reject or reduce it only in writing. The exam tests that UIM is typically excess of the negligent driver's liability limit and that the insured generally cannot collect UIM until the other driver's liability limit is exhausted. Settling with the at-fault driver without the insurer's consent can void UIM by destroying subrogation rights, so a consent-to-settle provision is standard.