Arizona Car Accident Laws Explained (2026)

Arizona Car Accident Laws: A Complete Guide for Injury Victims (2026)

Arizona car accident laws, explained in plain English. This guide is written and reviewed by Conduit Law's personal injury attorneys, who handle auto accident claims across Maricopa, Pima, and the rest of Arizona. For drivers, passengers, and pedestrians injured on roads like I-10, Loop 101, and the US-60 Superstition Freeway, understanding Arizona's auto accident laws can make a real difference in the outcome of a claim. Arizona's legal framework differs significantly from neighboring states like Colorado and California, particularly around fault allocation, insurance minimums, and government claim deadlines. This guide covers the major Arizona car accident statutes you need to know, from A.R.S. § 12-2505 (pure comparative fault) to A.R.S. § 12-542 (the two-year statute of limitations), with practical advice on protecting your rights after a crash.

Arizona's Pure Comparative Fault System

Arizona follows a pure comparative fault system under A.R.S. § 12-2505. Under pure comparative fault, an injured person can recover damages even if they are 99% responsible for the accident; the award is simply reduced by their percentage of fault. Arizona has also abolished joint and several liability in most cases, so each defendant generally pays only its own share of fault, and fault can be allocated to nonparties (A.R.S. § 12-2506), with exceptions such as parties acting in concert. By contrast, in modified comparative fault states like Colorado, claimants at 50% or more fault are barred from recovery.

How Fault Percentage Affects Your Recovery

The mechanics of pure comparative fault are straightforward but important to understand before entering settlement negotiations or trial. If a Maricopa County jury determines that your total damages equal $200,000 but you were 30% at fault for the collision (perhaps because you were traveling five miles per hour over the speed limit on the Loop 202 when another driver ran a red light), your recovery is reduced to $140,000. Fault percentages are often disputed, which is why documenting the accident scene thoroughly and obtaining the official DPS or local police report matters.

Your Fault %	Total Damages	Your Recovery	Notes
0%	$200,000	$200,000	Full recovery
25%	$200,000	$150,000	Reduced by your share
50%	$200,000	$100,000	Would be barred in CO
75%	$200,000	$50,000	Still recoverable in AZ
99%	$200,000	$2,000	Pure comparative allows this

Comparative Fault vs. Other States

Comparing Arizona's system to neighboring states shows why the pure comparative fault rule matters for injury victims. Colorado uses a modified comparative fault system with a 50% bar, meaning that if you are found 50% or more at fault, you recover nothing. California also follows pure comparative fault. Kansas uses a modified 50% bar system similar to Colorado's. Arizona is also distinctive in that its constitution forbids limiting damages for death or injury.

Statute of Limitations: The Two-Year Deadline

Under A.R.S. § 12-542, Arizona generally gives personal injury victims two years from the date of injury to file a lawsuit. Missing this deadline can bar the claim, regardless of how strong your evidence or how severe your injuries. This two-year window applies to car accident injuries, motorcycle crashes, pedestrian collisions, and bicycle accidents throughout Arizona, whether they occur on Phoenix's I-17 corridor, Tucson's Grant Road, or a rural highway in Cochise County.

Exceptions That Can Extend or Shorten the Deadline

Several exceptions can modify the standard two-year window. The deadline may be tolled (paused) for minors in some circumstances, and the discovery rule may affect the start date when injuries are not immediately apparent. However, the deadline is shortened dramatically for claims against government entities: under A.R.S. § 12-821.01, you must file a notice of claim within 180 days after the claim accrues, and the notice must include a specific amount for which the claim can be settled. A lawsuit against a public entity generally must be filed within one year (A.R.S. § 12-821). This applies to crashes involving city buses (Valley Metro), state vehicles, ADOT-maintained roads with defective signage, or any vehicle operated by a government employee.

Critical Warning: If your Arizona car accident involved a government vehicle or a dangerous road condition on a state-maintained highway, your effective deadline is not two years—it is 180 days. Failing to file the A.R.S. § 12-821.01 notice of claim within six months permanently bars your claim against the government entity, even if the two-year statute of limitations has not expired. Consult an attorney immediately if any government involvement is suspected.

Arizona Minimum Insurance Requirements

Arizona requires registered vehicles to carry minimum liability insurance under A.R.S. § 28-4009. For policies issued on or after July 1, 2020, the minimum is 25/50/15 coverage, meaning $25,000 per person for bodily injury, $50,000 per accident for bodily injury, and $15,000 per accident for property damage. A serious injury can quickly exceed the $25,000 per-person minimum once surgery, physical therapy, and lost wages are added up.

The Uninsured and Underinsured Driver Problem

Not every driver on Arizona roads carries insurance, and many carry only the minimum. When an uninsured driver causes your accident, your own uninsured/underinsured motorist (UM/UIM) coverage becomes your primary source of compensation. Arizona law does not require you to carry UM/UIM coverage, but insurers must offer it on a written form, and you may reject it (A.R.S. § 20-259.01). Carrying meaningful UM/UIM coverage is worth considering for any Arizona driver.

What Happens If You Drive Without Insurance

Driving without insurance in Arizona carries consequences that extend beyond a traffic ticket, including fines, license and registration suspension, and proof-of-insurance requirements. Beyond the administrative penalties, driving without insurance exposes you to personal liability for the damages you cause, meaning the other driver can sue you directly and pursue your personal assets.

What to Do After a Car Accident in Arizona

The steps you take in the first days after an Arizona car accident can affect the value of your claim and your ability to recover compensation. Delays in medical treatment, for example, can lead to disputes about whether the crash caused your injuries. From the moment a collision occurs on a Phoenix freeway, a Tempe intersection, or a Mesa parking lot, you should follow a specific sequence of actions designed to protect both your health and your legal rights. Our detailed step-by-step guide covers the full process, but here is the essential framework.

Reporting the Accident

Arizona law sets requirements for stopping, exchanging information, and reporting crashes, particularly when someone is injured or killed. In Phoenix, Tucson, and other incorporated cities, you call the local police department; on state highways and unincorporated areas, you contact the Arizona Department of Public Safety (DPS). The police report becomes a foundational document for your insurance claim and any lawsuit, as it typically contains the responding officer's observations, witness contact information, and a diagram of the accident scene.

Arizona's No-PIP Insurance System

Unlike states that use a Personal Injury Protection (PIP) or no-fault insurance system, Arizona operates under a traditional tort-based (at-fault) system. There is no PIP coverage that pays your medical bills regardless of fault; instead, the at-fault driver's liability insurance is responsible for your damages. In a PIP state like Florida, your own insurance pays your initial medical bills up to a coverage limit, but in Arizona, you pursue the at-fault driver's insurer. There is no PIP threshold to meet before filing a lawsuit, and the Arizona Constitution forbids limiting damages for injury or death. It also means that establishing fault quickly and clearly is key to getting your bills paid.

• Call 911 if anyone is injured, and request both police and EMS response
• Move to safety if the vehicle is operable and you are blocking traffic on a highway
• Exchange information with all involved drivers: name, license, insurance, phone number
• Document the scene with photos and video of all vehicles, road conditions, traffic signals, and injuries
• Seek medical attention within 24–48 hours, even if you feel fine—adrenaline masks serious injuries like concussions and internal bleeding
• Notify your insurance company of the accident, but do not give a recorded statement to the other driver's insurer without consulting an attorney
• Contact a personal injury lawyer before accepting any settlement offer

Common Causes of Arizona Car Accidents

Distracted driving, impaired driving, speeding, and failure to yield are among the common contributing factors in Arizona collisions. Many crashes happen in Maricopa County, home to Phoenix, Scottsdale, Mesa, Chandler, and Gilbert, and along busy corridors like the I-10 between Phoenix and Tucson, the Loop 101 through Scottsdale and Tempe, and the I-17 from central Phoenix to Anthem. Understanding the common causes of Arizona crashes helps injury victims identify potential defendants and build stronger negligence claims under the state's pure comparative fault framework.

Distracted Driving and Arizona's Cell Phone Law

Arizona enacted a statewide hands-free law in January 2021 under A.R.S. § 28-914, prohibiting drivers from holding or manually using a portable wireless device while operating a vehicle, with limited exceptions. A violation can be strong evidence of negligence in a civil lawsuit. If the other driver was using their phone at the time of your crash, phone records obtained through discovery can be important evidence. Combined with Arizona's pure comparative fault system, even a partially distracted claimant can recover damages.

Impaired Driving and DUI Crashes

Arizona has strict DUI laws, including mandatory jail time even for first offenses under A.R.S. § 28-1381. When a DUI driver causes your accident, a criminal conviction or plea can significantly strengthen your civil case and may support a claim for punitive damages.

Frequently Asked Questions

How long do I have to file a car accident lawsuit in Arizona?

Under A.R.S. § 12-542, you have two years from the date of injury to file a personal injury lawsuit in Arizona. If a government entity is involved, you must file a notice of claim within 180 days under A.R.S. § 12-821.01.

What is Arizona's minimum car insurance requirement?

Arizona requires 25/50/15 liability coverage: $25,000 per person for bodily injury, $50,000 per accident for bodily injury, and $15,000 for property damage. Uninsured/underinsured motorist coverage is offered but not mandatory.

Can I still recover compensation if I was partially at fault?

Yes. Arizona's pure comparative fault rule under A.R.S. § 12-2505 allows you to recover damages even if you are up to 99% at fault. Your award is reduced by your percentage of responsibility.

Does Arizona have no-fault car insurance?

No. Arizona uses a traditional tort-based (at-fault) system. There is no Personal Injury Protection (PIP) coverage. The at-fault driver's insurance pays for the injured party's damages.

What should I do if the other driver doesn't have insurance?

If you are hit by an uninsured driver, your own uninsured motorist (UM) coverage is your primary remedy. You can also sue the at-fault driver personally, but collecting a judgment from an uninsured individual is often difficult.

Do Arizona's auto accident laws apply to motorcycles, trucks, and rideshare crashes?

Yes. Arizona's auto accident laws, including pure comparative fault under A.R.S. § 12-2505 and the two-year statute of limitations under A.R.S. § 12-542, apply to motor vehicle collisions generally, including motorcycle, commercial truck, and rideshare (Uber and Lyft) crashes. Rideshare and commercial crashes may involve additional insurance coverage, depending on the circumstances.

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Disclaimer: This article provides general information about Arizona car accident laws and does not constitute legal advice. Laws change, and every case involves unique facts. Consult a qualified Arizona personal injury attorney for advice specific to your situation. Conduit Law does not guarantee any particular legal outcome.

If you were injured in a car accident in Arizona, Conduit Law offers free consultations with experienced personal injury attorneys who handle cases across Maricopa County, Pima County, and statewide. We work on contingency—you pay nothing unless we recover compensation for you. Contact our Arizona personal injury team today to discuss your case and learn what your claim may be worth.