Understanding Arizona’s Uninsured and Underinsured Motorist Coverage

by | Jun 30, 2026 | Attorney

Recent Articles

Categories

Archives

Many drivers assume that every motorist on Arizona roads carries adequate insurance coverage. Unfortunately, that is not always the case. Some drivers operate vehicles without insurance, while others carry only the minimum coverage required by law, which may not be enough to cover serious injuries or significant damages after a collision.

For drivers in Glendale, AZ, understanding uninsured motorist (UM) and underinsured motorist (UIM) coverage is an important part of protecting themselves financially. These optional coverages can provide additional protection when the at-fault driver lacks sufficient insurance. Whether someone later consults an Auto Accident Attorney, Car Accident Attorney, or one of many Automobile Accident Attorneys, knowing how UM and UIM coverage works can help them better understand their options after an accident.

What Is Uninsured Motorist Coverage?

Uninsured motorist coverage, commonly referred to as UM coverage, is designed to help pay for damages when a driver is injured by someone who does not have auto insurance.

This type of coverage may apply when:

  • The at-fault driver has no insurance policy.
  • The driver cannot be identified after a hit-and-run accident.
  • The at-fault vehicle is uninsured.

Without UM coverage, injured individuals may face challenges recovering compensation when the responsible driver lacks the resources to pay for damages.

Arizona insurance companies are required to offer uninsured motorist coverage, although drivers may choose whether to purchase it.

What Is Underinsured Motorist Coverage?

Underinsured motorist coverage, or UIM coverage, applies when the at-fault driver’s insurance policy limits are insufficient to cover the damages resulting from an accident.

For example, a driver may carry the minimum liability coverage required by Arizona law, but the injured person’s medical expenses and other losses may exceed those limits.

In these situations, underinsured motorist coverage may help bridge the gap between:

  • The at-fault driver’s policy limits
  • The actual value of damages

UIM coverage can be particularly important in accidents involving severe injuries, extended medical treatment, or long-term recovery.

Why Are UM and UIM Coverage Important in Arizona?

Arizona roads see thousands of vehicle collisions each year, and not every driver carries adequate insurance protection.

Even responsible drivers who maintain insurance coverage can face financial risks when another motorist fails to do the same.

UM and UIM coverage can help address situations involving:

  • Serious injuries
  • High medical expenses
  • Long-term rehabilitation
  • Lost income
  • Permanent disabilities

Because these costs can quickly exceed minimum policy limits, additional coverage may provide an important financial safety net.

What Damages Can UM and UIM Coverage Help Cover?

Coverage details vary by policy, but UM and UIM benefits may help with damages such as:

Medical Expenses

These may include:

  • Emergency treatment
  • Hospitalization
  • Surgeries
  • Rehabilitation
  • Physical therapy

Lost Income

Injuries may prevent someone from returning to work for an extended period.

Future Medical Costs

Serious injuries sometimes require ongoing treatment long after the initial accident.

Pain and Suffering

Depending on the policy and circumstances, non-economic damages may also be considered.

Drivers should review their specific insurance policies to understand what protections are available.

Does Arizona Require Drivers to Carry UM or UIM Coverage?

Arizona law does not require motorists to purchase UM or UIM coverage.

However, insurance companies must generally offer these coverages when a policy is issued.

Drivers may accept or reject the coverage after reviewing their options.

While some individuals choose to decline additional coverage to reduce premiums, doing so may leave them with fewer financial protections following a serious accident involving an uninsured or underinsured driver.

How Do Hit-and-Run Accidents Affect UM Coverage?

Hit-and-run accidents present unique challenges because the at-fault driver cannot always be identified.

When a responsible driver leaves the scene, injured individuals may have difficulty pursuing compensation through the at-fault party’s insurance policy.

In many cases, uninsured motorist coverage may apply if the incident qualifies under the terms of the policy.

Evidence that may be helpful in these situations includes:

  • Police reports
  • Witness statements
  • Surveillance footage
  • Dash camera recordings
  • Accident scene photographs

Proper documentation can be important when pursuing a UM claim following a hit-and-run collision.

How Is Fault Determined in UM and UIM Claims?

Although UM and UIM claims involve a driver’s own insurance company, fault still matters.

Insurance companies typically investigate:

  • Police reports
  • Witness accounts
  • Vehicle damage
  • Medical records
  • Accident reconstruction evidence

The insurer must generally determine whether another driver caused the accident before benefits become available.

Because liability disputes can arise, documentation remains an important part of the claims process.

Can UM and UIM Coverage Apply to Passengers?

In many situations, passengers may also benefit from UM or UIM coverage.

Coverage eligibility depends on factors such as:

  • Policy language
  • Vehicle ownership
  • Occupancy status
  • Household relationships

Passengers injured in accidents involving uninsured or underinsured drivers may have access to coverage through one or more applicable insurance policies.

Understanding available coverage often requires reviewing the specific policy terms involved.

What Should Drivers Do After an Accident With an Uninsured Driver?

After any collision, safety and medical care should remain the first priorities.

Drivers should also consider:

  • Contacting law enforcement
  • Gathering witness information
  • Photographing the scene
  • Preserving vehicle damage evidence
  • Reporting the accident to their insurer

These steps can help create documentation that may become important when pursuing a UM or UIM claim.

Drivers in Glendale seeking additional information about accident-related legal matters can learn more from an Auto Accident Attorney who provides educational resources regarding vehicle collisions and injury claims.

Folger Law Firm offers information about car accident claims, insurance issues, and injury-related legal matters throughout Arizona, helping individuals better understand their rights and responsibilities following a crash.

Why Should Arizona Drivers Review Their Coverage?

Many drivers do not think about uninsured or underinsured motorist coverage until after an accident occurs. By then, coverage decisions have already been made.

Reviewing UM and UIM coverage before an accident happens can help individuals better understand:

  • Their policy limits
  • Available protections
  • Potential financial risks
  • Coverage options for family members

For Glendale residents, these coverages may provide valuable protection when accidents involve uninsured or underinsured drivers. Understanding how they work can help motorists make informed decisions and prepare for situations that may otherwise create significant financial hardship after a collision.

Related Articles