What is Uninsured Motorist?
Uninsured Motorist (UM) coverage helps protect you if you're injured or your vehicle is damaged by a driver who has no liability insurance or by a hit-and-run driver. It fills gaps left by another driver's missing coverage and often includes underinsured motorist (UIM) options that apply when the at-fault driver’s limits are too low for your losses. For a broader discussion of related topics, see Insurance topics: uninsured motorists, personal property gaps, and rising hospital costs.
Who needs it
Most drivers should consider UM/UIM coverage, especially if you rely on your vehicle for work or family transport. It’s commonly purchased by private drivers, renters who drive, and small organizations that operate vehicles. People in areas with higher rates of uninsured drivers or in states with no-fault systems often find it particularly valuable. If you already have a personal auto policy, reviewing your limits alongside your policy type can clarify gaps; see Personal Auto Insurance for typical auto coverage considerations.
What it typically covers
UM/UIM coverage usually helps pay for:
- Medical expenses for you and passengers after a crash with an uninsured or underinsured driver
- Lost wages and certain rehabilitation costs
- Property damage in some states or under specific policy forms
Some specialty exposures—like boating incidents—may require separate uninsured boater coverage; policies and limits differ, so compare options or consult resources such as Uninsured Boater Coverage.
Common exclusions or limitations
Typical exclusions can include intentional acts, incidents while using a vehicle for commercial activities, claims by someone not listed on the policy, or crashes outside covered geographic areas. Policy terms define who counts as an insured and which losses are eligible. Underwriting factors and specific exclusions vary by insurer and state.
Factors that influence cost
Premiums depend on limits you select, your driving record, vehicle type, typical use (commuting vs. pleasure), and the insurer’s underwriting rules. Local risk factors—such as transportation risks, rates of uninsured drivers, and traffic density—also affect pricing. Choosing higher UM/UIM limits increases protection but will raise premiums.
Proof of insurance & compliance
States set their own proof-of-insurance and minimum liability requirements; UM/UIM availability and rules vary accordingly. Your declaration page will show your selected UM limits. Keep a copy of your card or digital proof accessible when driving, and review how UM interacts with other coverages like medical payments or health insurance.
How to get a quote
Compare limits and endorsements, and ask about how UM integrates with your medical coverage and rental or commercial use. If you want help estimating appropriate limits, talk to your agent about the tradeoffs between protection and premium. Good agents will explain underwriting factors, typical exclusions, and options for added protection.
Frequently Asked Questions
Does UM cover property damage?
Some policies or states include uninsured motorist property damage (UMPD), but it’s not universal. Check your policy declarations to confirm whether property damage is included.
Will UM pay if the at-fault driver is unknown (hit-and-run)?
Many UM/UIM policies provide coverage for hit-and-run incidents, though rules and proof requirements vary by carrier and state.
Can UM limits be higher than my liability limits?
Yes. You can often select UM/UIM limits independently of your liability limits, but higher limits mean higher premiums. Discuss options with your agent to match your risk tolerance.
Still have questions? Talk to a local insurance expert.