The insurance card is a clue—not a coverage map

A serious Arizona crash should produce an inventory of every policy, self-insurance arrangement and indemnity source that could respond to the loss.

Layer 1 The Vehicle

Identify its owner, VIN, registration, use and the policy describing or rating it as an owned automobile.

Layer 2 The Driver

Find the driver's personal, household, employer and nonowned-auto insurance relationships.

Layer 3 The Business

Investigate employer, commercial auto, hired/nonowned, fleet, umbrella and excess insurance.

Layer 4 The Injured Person

Search separately for UM/UIM, MedPay and other first-party protection available to the claimant.

Coverage investigation rule: do not ask only which policy insured the at-fault driver. Ask every reasonable question that can identify another policy, insured person, liable entity or layer of insurance.

Start with the crash report and scene information

Arizona's crash-report statute gives the investigation an initial factual foundation.

Vehicle ownership

A.R.S. §28-667 requires the investigating report to include identifying information concerning vehicle ownership and registration.

Proof of insurance

The report includes proof-of-insurance information obtained during the accident investigation.

Driver identity

Determine whether the driver and registered owner are the same person. If not, the coverage investigation expands immediately.

Purpose of the trip

Ask where the driver was going, where the driver had been and whether the trip involved employment, delivery, passengers or business activity.

The crash report does not prove that the listed policy is the only policy. It identifies an initial insurance source. Coverage still must be reconstructed from the actual policies and facts.

First investigate the policy attached to the crash vehicle

Arizona generally organizes the ordinary owner's liability policy around the described or rated vehicle.

Identify the registered and actual owner. Confirm title, registration, VIN and any business or leasing interest.

Identify the policy that describes the vehicle. Obtain the declarations page, policy number, carrier and limits.

Obtain the complete policy. The declarations page alone does not contain all insured definitions, exclusions, conditions or endorsements.

Identify every named insured. A vehicle can be associated with individuals, spouses, businesses, trusts or other entities.

Determine whether the driver had permission. Section 28-4009 generally protects qualifying express or implied permissive users of a covered vehicle.

Check for excluded drivers. Obtain any written named-driver exclusion rather than accepting a coverage adjuster's characterization.

Then investigate the driver's own insurance

A driver can have insurance separate from the policy covering the vehicle.

Driver owns another vehicle

Identify every automobile owned by the driver and every personal auto policy issued to that driver.

Nonowned-auto coverage

The driver's policy may provide liability protection when the driver uses a vehicle that the driver does not own, subject to the policy's definitions, exclusions and priority provisions.

Operator's policy

Section 28-4009(B) expressly recognizes an Arizona operator's liability policy covering the named insured's use of nonowned vehicles.

Other insured relationships

The driver may also qualify as an insured under a spouse's, parent's, household member's or employer's policy depending on the actual contract and facts.

A household can contain several separate automobile policies

Residence and family relationships can matter differently under liability, UM/UIM and MedPay provisions.

Spouse

Identify policies issued separately to a spouse even when the crash vehicle appears on another policy.

Resident relatives

Obtain policies of potentially relevant resident relatives rather than assuming insured status from the family relationship alone.

Other household vehicles

Identify every vehicle kept at the residence and every carrier insuring those vehicles.

Finding a household policy does not establish coverage. Guide 04 determines who qualifies as an insured. Guide 05 addresses UM/UIM. Guide 06 addresses multiple policies and stacking.

A work-related trip can expose an entirely different insurance tower

The driver may be operating a personal automobile while still acting for an employer or business.

Commercial auto

Determine whether the employer maintains a business auto or commercial automobile policy.

Hired and nonowned auto

Business policies may protect liability arising from vehicles the business does not own but that are used in its operations.

Fleet coverage

Larger employers may use scheduled fleet policies, self-insured retentions or statutory self-insurance.

Umbrella / excess

Commercial risks commonly carry additional layers above the primary automobile liability policy.

Questions that expose work-related coverage

Who employed the driver?
Was the driver being paid?
Was the trip made at an employer's request?
Was the driver traveling between work locations?
Was the driver transporting tools or equipment?
Was the driver making a delivery?
Was the driver transporting a customer or coworker?
Was mileage reimbursed?
Did the employer require use of a personal automobile?
Did the employer carry commercial auto insurance?
Did the employer carry hired/nonowned auto coverage?
Was there an umbrella or excess layer?

Liability and insurance are separate maps. The existence of employer insurance does not itself prove employer liability, and employer liability does not identify every insurance layer. Guide 14 addresses both systems in detail.

Special vehicle use can trigger specialized coverage

Rental vehicle

Obtain the rental agreement, renter's personal policy, rental-company coverage information and any purchased protection.

Dealership or repair vehicle

Arizona §28-4010 contains specific primary/excess rules when a policy associated with a motor-vehicle business applies.

Rideshare / TNC

Determine precise app status and identify both the driver's personal insurance and insurance maintained for the TNC activity.

Taxi, livery or limousine

Arizona separately regulates these transportation services and imposes specialized financial-responsibility requirements.

Government vehicle

Identify the public employer, applicable self-insurance or risk pool, and immediately preserve Arizona's short public-entity deadlines.

Large commercial fleet

Determine whether the entity is conventionally insured, self-insured, partially self-insured or protected through multiple layers.

Arizona TNC claims produce useful digital coverage evidence. Section 28-4038 requires the TNC and applicable insurers, during a coverage investigation, to cooperate regarding precise log-on and log-off times and descriptions of their coverage, exclusions and limits.

Always ask whether another layer sits above the primary auto policy

Layer 1

Primary liability

The policy that responds first under the applicable policy terms and Arizona priority rules.

Layer 2

Umbrella

A separate policy may provide liability protection above specified underlying insurance and sometimes broader coverage subject to its own terms.

Layer 3+

Excess

Commercial defendants can have one or more excess layers attaching above stated underlying limits or retentions.

Do not infer the absence of excess insurance from §20-259.01. That statute says Arizona's mandatory UM/UIM offer need not be made with certain umbrella and excess policies. It does not mean those policies cannot provide additional liability coverage for the defendant.

The injured person's insurance is a separate investigation

The liability policy protects the person alleged to have caused the crash. UM/UIM and MedPay protect qualifying insureds under their own first-party contracts.

UM/UIM on the occupied vehicle

Obtain the policy covering the vehicle occupied by the injured person and determine its UM/UIM limits and insured definitions.

Claimant's own policy

An injured person may have a separate policy even when riding in another person's vehicle.

Household UM/UIM

Identify policies issued to a spouse or resident household member where the claimant might qualify as an insured.

Multiple Arizona coverages

Once all applicable policies are identified, Guide 06 applies §20-259.01(H), Franklin and Balzan to determine whether and how multiple UM/UIM coverages can be used.

Never sign a liability release before identifying possible UIM consequences. Settlement with the tortfeasor and preservation of first-party rights should be analyzed together before final release.

Finding multiple policies is only step one—the next question is priority

A.R.S. §28-4010 supplies statutory presumptions when multiple valid and collectible motor-vehicle liability policies apply to the same vehicle and loss.

Situation	Arizona starting rule
Ordinary overlapping liability policies	The policy describing or rating the involved vehicle as an owned automobile is generally conclusively presumed primary, with other applicable insurance excess.
Vehicle being operated by motor-vehicle business	If the vehicle is operated by a person engaged in selling, repairing, servicing, delivering, testing, parking or storing vehicles—or that person's employee or agent—the business policy is generally primary under §28-4010.
Customer operating vehicle associated with motor-vehicle business	The motor-vehicle-business policy is generally excess over other insurance available to the operator as a named insured or otherwise.
Umbrella or true excess policy	Read the actual attachment point, retained limit, underlying insurance requirements and other-insurance provisions.
UM/UIM	Do not mechanically apply liability priority. Arizona UM/UIM has its own statutory system under §20-259.01.

First find every policy. Then decide order. A coverage investigation can fail if an investigator asks which carrier is primary before discovering the policies that could participate at all.

Before suit, build the policy inventory from every available source

Formal civil disclosure does not replace a careful pre-suit investigation. The investigation should begin long before a complaint is filed.

Crash report

Use ownership, registration and proof-of-insurance information as the initial lead.

Driver and owner

Ask for carrier, policy number, limits, all applicable policies and umbrella or excess coverage.

Insurers

Open claims with potentially applicable carriers and request confirmation of coverage, insured status and policy information.

Business defendant

Identify commercial insurance, risk management, self-insurance, third-party administrators and excess layers.

TNC or transportation company

Preserve electronic platform information and invoke the statutory coverage-investigation process where applicable.

Claimant's own records

Review declarations pages, household policies, umbrella policies and prior insurance communications for first-party protection.

Once suit is filed, Arizona Rule 26.1 substantially changes the visibility of insurance

Arizona's civil disclosure rule requires affirmative disclosure of qualifying insurance and indemnity arrangements that may satisfy or reimburse payment of a judgment.

Rule 26.1(a)(10)(A)

The agreement

A copy of the insurance policy, indemnity agreement or suretyship agreement—or its existence and substance if no copy is available.

Rule 26.1(a)(10)(B)

Coverage disputes

A copy—or the existence and basis—of any disclaimer, limitation, coverage denial or reservation of rights.

Rule 26.1(a)(10)(C)

Remaining limits

Disclosure includes the remaining dollar limits under the applicable insurance, indemnity or suretyship agreement.

The rule reaches more than an insurance declarations page. Its definition of insurance policy includes the contract or certificate and all clauses, riders, endorsements and papers attached to or forming part of the policy.

Updated remaining limits

Rule 26.1 also addresses supplementation of remaining dollar limits. A party may make the specified written request within the rule's time window before a settlement conference, mediation or trial, and the disclosure must then be supplemented within the period stated by the rule.

Discovery and admissibility are different. Insurance information does not become admissible at trial merely because Rule 26.1 requires its disclosure.

Build a policy ledger before valuing settlement

The coverage file should make every potential source of payment visible on one page.

Insured / Entity	Carrier	Policy	Coverage	Limits	Vehicle / Risk	Priority	Coverage Issue
Vehicle owner	________	________	Liability	________	Crash vehicle	Primary?	________
Driver	________	________	Nonowned liability	________	Driver policy	Excess?	________
Employer / business	________	________	Commercial / HNOA	________	Business use	________	________
Umbrella / excess	________	________	Excess liability	________	Underlying risk	Excess	________
Claimant	________	________	UM/UIM	________	First party	________	Stacking?
Claimant / vehicle	________	________	MedPay	________	First party	________	Lien?

Do not settle from memory. Before release, reconcile the policy ledger against the parties, vehicles, employers, household members, coverage letters, Rule 26.1 disclosures and reimbursement claims.

Coverage-investigation document checklist

crash report
vehicle registration
VIN
insurance identification card
owner's declarations page
owner's complete policy
all endorsements
excluded-driver agreement
driver's declarations pages
driver's complete policies
household policies
umbrella declarations
umbrella policy
excess policy
employer information
commercial auto policy
hired/nonowned auto policy
fleet schedule
self-insurance certificate
risk-management information
rental agreement
TNC app records
TNC coverage confirmation
UM/UIM declarations
UM/UIM policy
MedPay declarations
reservation-of-rights letter
coverage denial
coverage limitation letter
Rule 26.1 disclosures after suit

Common coverage-investigation mistakes

Stopping with the crash-report carrier

The report identifies a starting point, not every policy applicable to the loss.

Searching only the vehicle owner

The driver may carry separate personal, household or business coverage.

Ignoring the purpose of the trip

A work, delivery or rideshare trip can expose commercial or platform insurance not visible from the personal insurance card.

Ignoring umbrella insurance

Higher-value claims should include a deliberate umbrella and excess inquiry.

Looking only at defendant insurance

The injured person's UM/UIM and MedPay coverage require a separate first-party policy search.

Assuming multiple policies can all be added together

Finding coverage and determining priority or stacking are different legal questions.

Arizona authority map

Primary Law · A.R.S. §28-667 Arizona crash reports

Requires specified identifying information in the investigated crash report, including vehicle ownership, registration and proof of insurance.

Primary Law · A.R.S. §28-4009 Owner's and operator's motor vehicle liability policies

Provides the starting statutory framework for identifying covered vehicles, named insureds, permissive users and operator's liability coverage.

Primary Law · A.R.S. §28-4010 Primary and excess automobile liability coverage

Establishes Arizona's statutory presumptions when multiple valid and collectible liability policies apply to the same motor vehicle.

Primary Law · A.R.S. §20-259.01 UM/UIM and first-party policy search

Requires a separate investigation of the claimant's available uninsured and underinsured motorist protection and provides Arizona's multiple-coverage framework.

Primary Law · A.R.S. §28-4038 TNC coverage investigation

Requires cooperation between TNCs and insurers during coverage investigations, including exchange of app-status timing and descriptions of coverage, exclusions and limits.

Primary Law · A.R.S. §28-4039 Taxi, livery and limousine coverage

Establishes specialized financial-responsibility rules and coverage-information cooperation for regulated transportation services.

Arizona Civil Procedure · Rule 26.1(a)(10) Mandatory insurance disclosure after litigation begins

Requires disclosure of qualifying policies and indemnity agreements, coverage denials or reservations and remaining dollar limits that may satisfy or reimburse payment of a judgment.

Source-control rule: an insurer's statement that “these are the limits” should be tested against the ownership facts, driver and household relationships, business use, the actual contracts and—after litigation begins—the insurance disclosures required by Arizona Rule 26.1.

Frequently asked questions

Is the policy listed on the Arizona crash report necessarily the only policy?

No. It is an important starting point, but the owner, driver, household, employer, business, umbrella carrier or injured person may have other applicable insurance.

Should I investigate the driver's own policy if the driver borrowed the car?

Yes. The driver's policy may contain nonowned-auto or other liability coverage. Arizona also recognizes operator's motor vehicle liability policies under §28-4009(B).

Which policy is usually primary when two policies cover the same Arizona vehicle?

Subject to §28-4010's special motor-vehicle-business rules, the policy describing or rating the involved vehicle as an owned automobile is generally presumed primary, with other applicable insurance excess.

Should I look for insurance through the driver's employer?

Yes whenever the facts reasonably suggest employment or business use. Commercial auto, hired/nonowned auto, fleet, umbrella and excess insurance may become relevant.

How do I investigate an Uber or Lyft crash?

Reconstruct the driver's exact app status and obtain both personal and TNC-related insurance information. Arizona §28-4038 requires important cooperation and information exchange during the coverage investigation.

Does an umbrella policy have to contain Arizona UM/UIM?

Not merely because it is an umbrella. Section 20-259.01(L) states that Arizona's statutory UM/UIM offer requirement does not apply to certain umbrella, excess and other policies that do not provide primary motor vehicle liability insurance for a specifically insured vehicle.

When does Arizona require formal disclosure of liability insurance?

Once civil litigation is underway, Arizona Rule of Civil Procedure 26.1(a)(10) requires disclosure of qualifying insurance and indemnity agreements, applicable coverage disclaimers or reservations, and remaining dollar limits.

Does Rule 26.1 disclose only the declarations page?

No. The rule reaches the qualifying policy or agreement and defines an insurance policy broadly to include its clauses, riders, endorsements and papers attached to or forming part of it.

If Rule 26.1 reveals insurance, can the jury automatically hear about it?

No. The rule expressly provides that insurance information is not admissible merely because it was disclosed.

Why investigate UM/UIM before settling the liability claim?

Because UIM can become a major source of recovery when liability insurance is inadequate. The first-party policy and any conditions affecting settlement should be identified before executing a release.

What is the final product of the coverage investigation?

A written policy ledger identifying every potentially applicable policy, insured, limit, vehicle or risk, priority position, reservation or denial, and unresolved coverage issue.

← Guide 02 Required Auto Insurance & Minimum Limits Arizona Library Return to the 23-guide Arizona index. Guide 04 → Who Is an Insured?

Do not let the first insurance card define the available recovery.

Begin with the crash vehicle. Identify its owner and policy. Investigate the driver and household. Determine whether the trip involved employment or commercial activity. Search for umbrella and excess insurance. Then separately identify every UM/UIM and first-party policy available to the injured person. Put every policy into one coverage ledger before evaluating settlement.

Public legal education only. VictimsGuide.com provides public-interest legal education. It does not provide individualized legal advice, does not offer or accept legal representation, and does not create an attorney-client relationship. Arizona insurance coverage depends on actual policies, endorsements, insured status, ownership, permission, household relationships, business use, priority rules and current Arizona law. Verify controlling primary authority before legal reliance.