6.4 Part C Uninsured/Underinsured Motorists

Part C: Uninsured and Underinsured Motorists Coverage

Part C - Uninsured/Underinsured Motorists (UM/UIM) protects the insured against drivers who are at fault but cannot pay because they carry no insurance or not enough. It is first-party coverage that steps into the shoes of the missing liability insurer. UM/UIM is a major Mississippi exam topic because Mississippi requires insurers to offer UM coverage and applies specific stacking and offset rules.

Uninsured vs. Underinsured Motorist

UM coverage typically includes UM bodily injury and, where available, UM property damage. The exam stresses that UM pays the insured the damages he would have collected from the at-fault uninsured driver - so the insured must be legally entitled to recover (the other driver must be at fault).

Mississippi UM Requirements

Mississippi law requires every auto liability policy to include UM coverage equal to the policy's liability limits unless the insured rejects it in writing. The minimum offered tracks the 25/50/25 financial-responsibility limits. A written rejection is required to buy lower UM limits or waive the coverage - a detail the exam tests as a Mississippi-specific rule.

Underinsured Motorist Offset Example

UIM pays the gap between the insured's damages (up to the UIM limit) and what the at-fault driver's liability insurer pays. Mississippi follows a structure where UIM coverage is determined after accounting for the at-fault driver's available limits.

Assume the insured carries $100,000 UM/UIM and suffers $90,000 in proven bodily-injury damages. The at-fault driver carries Mississippi-minimum $25,000 BI.

The insured is made whole: $25,000 from the other driver plus $65,000 UIM. Had damages exceeded the $100,000 UIM limit, UIM would cap at $100,000 (less any required offset).

Exam trap: UIM does not simply add the full UM limit on top of the other driver's payment; it fills the shortfall up to the UIM limit. Know whether your exam jurisdiction uses a "limits" or "damages" trigger - Mississippi compares the insured's damages to amounts recovered.

Stacking and Conditions

Stacking lets an insured combine UM limits across multiple insured vehicles or policies. Mississippi has historically permitted stacking of UM coverage in certain circumstances, increasing the dollars available - a frequent point of contrast with anti-stacking states. Always answer based on the rule stated in the question.

Key Part C Conditions and Exclusions

• The insured must notify police promptly in hit-and-run claims and provide proof of contact (or, in some jurisdictions, corroboration of a phantom vehicle).
• UM does not apply while the insured occupies a vehicle owned by but not insured under the policy (the "owned but not scheduled" exclusion that prevents free coverage on uninsured household cars).
• Disputes over the amount the insured is legally entitled to recover are commonly resolved by arbitration under the policy.
• Payments under Part A or Part B for the same damages are not duplicated; the policy prevents double recovery.

Why UM/UIM Matters in Mississippi

With many minimum-limit and uninsured drivers on the road, UM/UIM is one of the most valuable coverages an agent can recommend. Because Mississippi mandates the offer of UM at liability-equal limits and requires a written rejection to reduce or waive it, producer documentation of that offer is both a professional duty and an errors-and-omissions safeguard.

Hit-and-Run and Phantom-Vehicle Claims

A common UM scenario is the hit-and-run or phantom vehicle. Because there is no identified at-fault carrier, the insured's own UM coverage responds. The PAP requires prompt police notification and, in many jurisdictions, independent corroboration that an unidentified vehicle caused the loss - testimony of the insured alone is often insufficient for a phantom-vehicle claim. The exam tests that physical contact is not always required for UM, but procedural proof is.

UM Property Damage and the Mini-Tort

Some states, including Mississippi where offered, allow UM property damage to repair the insured's vehicle when struck by an uninsured driver, sometimes subject to a small deductible. This can overlap with Part D collision; an insured carrying collision may simply use Part D and let the insurer subrogate. Comparing UMPD (no collision deductible logic but limited availability) against Part D collision (broad, deductible applies) is a frequent recommendation question.

Exam tip: Three triggers define an uninsured motorist - no insurance, a hit-and-run/phantom vehicle, or an insolvent insurer. An underinsured motorist has insurance, but too little to cover the insured's damages. UM/UIM is first-party coverage requiring the other driver to be legally at fault, and Mississippi mandates the offer at liability-equal limits with a written rejection to reduce or waive.