Hurt in an Arizona crash and the other driver is blaming you? Call us now or request a free case review before you speak with their insurer.
Short answer
To prove negligence after an Arizona car crash, you must show four things by a preponderance of the evidence (more likely than not): the other driver owed you a duty of care, breached that duty, caused your injuries, and you suffered damages. Evidence such as photos, the crash report, witness statements, video, vehicle data, and medical records proves each element. A traffic violation, such as running a red light, can strongly support breach. [negligence per se under Arizona law] The sooner you collect and preserve evidence, the stronger your claim, because video and vehicle data can be lost within days.
Key facts
- Burden of proof: the injured person must prove negligence, by showing it is more likely than not. This is a lower standard than “beyond a reasonable doubt” in criminal cases.
- Four elements: duty, breach, causation, and damages. All four are required.
- Shared fault: Arizona uses pure comparative fault, so you can recover even if partly at fault, reduced by your percentage. [A.R.S. 12-2505]
- Deadline: generally 2 years from the crash for most personal injury claims. Claims against government entities have much shorter notice deadlines. [A.R.S. 12-542; A.R.S. 12-821.01]
- Evidence that disappears fast: business and traffic camera video, dashcam footage, vehicle event data recorders, and physical evidence at the scene.
- Do first: call 911, get medical care, photograph the scene, and avoid admitting fault.
What are the four elements of negligence in Arizona?
- Duty: every driver must use reasonable care, such as obeying traffic laws, controlling speed, and watching for others.
- Breach: the driver failed that duty, for example by speeding, running a signal, texting, following too closely, or driving impaired.
- Causation: the breach caused the crash, and the crash caused your injuries. Medical records usually prove the second link.
- Damages: you suffered real losses, such as medical bills, lost income, property damage, and pain and suffering.
What evidence proves the other driver was at fault?
| Evidence | What it can prove | Time sensitivity |
|---|---|---|
| Scene photos and video | Vehicle positions, damage, skid marks, signals, road conditions | Scene changes within hours |
| Police crash report | Officer observations, citations, witness names, diagram | Request promptly |
| Traffic and business cameras | The crash itself, signal phase, speed | Often overwritten within days |
| Dashcam video | Driver conduct before impact | Save and back up immediately |
| Vehicle event data recorder (black box) | Speed, braking, throttle, seat belt use | Can be overwritten or lost if the car is repaired or sold |
| Witness statements | Independent account of what happened | Memory fades quickly |
| Phone records | Texting or calling at the time of the crash | Requires legal process, so send a preservation letter early |
| Medical records | Link between the crash and your injuries | Start treatment promptly |
| Commercial vehicle logs and inspection records | Hours of service violations, maintenance failures | Requires a preservation letter to the carrier |
| Expert reconstruction | Speed, angles, sight lines, avoidability | Most useful in serious or disputed cases |
What should I do at the scene to protect my claim?
If you are able and it is safe:
- Call 911 and ask for police and medical help. [Arizona crash reporting requirements, A.R.S. 28-667]
- Move to safety, but take photos first if you can.
- Photograph all vehicles, license plates, damage, skid marks, traffic signals, signs, road conditions, and your injuries.
- Get the other driver’s name, phone number, license, plate, and insurance information.
- Get names and phone numbers of witnesses.
- Note the weather, lighting, and time.
- Say little. Do not apologize or guess about fault.
- Get medical care the same day, even if you feel fine, because some injuries appear later.
What should I do in the days after the crash?
- Get the police report and the report number.
- Follow your doctor’s treatment plan and keep every appointment.
- Write down your own account while your memory is fresh.
- Keep repair estimates, bills, pay stubs, and receipts.
- Do not post about the crash or your activities on social media.
- Do not repair or dispose of your vehicle before it is documented.
- Ask a lawyer to send preservation letters for video, vehicle data, and phone records before they are lost.
How do traffic violations help prove negligence?
A traffic citation or a clear violation of a traffic law can support the breach element, because drivers must follow the rules of the road. Common examples include speeding, running a red light or stop sign, failing to yield, following too closely, unsafe lane changes, and distracted or impaired driving. [Arizona traffic statutes and negligence per se rules] A citation helps, but you do not need one to win a civil claim, and a driver can be negligent without breaking a specific traffic law.
How reliable is the police report?
A crash report is a useful starting point, but the officer’s opinion on fault is not final in a civil case. Reports can contain errors, miss witnesses, or rely on one driver’s account. In some cases, a report may not be allowed as evidence in court. Your own photos, video, witnesses, and medical records fill the gaps.
What if there were no witnesses or no video?
You can still prove negligence. Physical evidence such as skid marks, debris, and vehicle damage patterns, the vehicles’ event data recorders, the crash report, 911 audio, and expert reconstruction can show how the crash happened. Circumstantial evidence can be enough when it makes your version more likely than not.
What if the other driver blames me?
Insurers often argue you share the blame so they can reduce what they pay. Under Arizona’s pure comparative fault rule, you can still recover even if you were partly at fault, but your compensation is reduced by your percentage. [A.R.S. 12-2505] Strong evidence, such as video, reconstruction, or witness testimony, can reduce the fault assigned to you. Speak with a lawyer before giving a recorded statement to the other driver’s insurer.
Common insurer arguments and how evidence answers them
| What the insurer may say | Evidence that can answer it |
|---|---|
| “You were speeding.” | Event data recorder, video, and skid mark analysis |
| “You stopped suddenly.” | Dashcam video, witnesses, and the other driver’s following distance |
| “The light was yellow or you ran it.” | Traffic signal timing records and camera footage |
| “You were not hurt that badly.” | Prompt medical records, imaging, and doctor opinions |
| “You had a prior injury.” | Medical history showing the crash made a prior condition worse |
| “You waited too long to see a doctor.” | A clear timeline of symptoms and a doctor’s explanation |
When do experts help prove negligence?
Accident reconstruction, medical, human factors, and trucking safety experts can explain how the crash happened, whether it could have been avoided, and how it caused your injuries. They are most useful in serious injury cases, fault disputes, and crashes involving commercial vehicles.
What if the driver was working or driving a commercial vehicle?
If the driver was working, the employer may also be responsible for the driver’s negligence. Trucking companies must keep records such as driver logs and maintenance files, so early preservation letters matter. These claims often have higher insurance limits and more complex evidence.
What mistakes can hurt your negligence claim?
- Admitting fault or guessing about what happened
- Giving a recorded statement to the other insurer without advice
- Waiting to get medical care or skipping follow-up appointments
- Posting about the crash or your activities online
- Repairing or selling the vehicle before the data and damage are documented
- Waiting too long to request video, which is often overwritten within days
- Missing the filing deadline
When should I hire an Arizona personal injury lawyer?
Consider calling a lawyer if you were injured, fault is disputed, the other driver or insurer blames you, a commercial vehicle was involved, the insurer asks for a recorded statement, or you receive a low settlement offer. A lawyer can send preservation letters, collect and organize evidence, work with experts, and negotiate or file suit if needed.
FAQ
How do you prove negligence in an Arizona car accident?
You must show that the other driver owed you a duty of care, breached it, caused your injuries, and that you suffered damages. Photos, video, the crash report, witness statements, vehicle data, and medical records are the main evidence.
What are the four elements of negligence?
Duty, breach, causation, and damages.
What is the burden of proof in a civil injury case in Arizona?
The injured person must show negligence is more likely than not, which is called a preponderance of the evidence.
Do I need the other driver to be ticketed to prove negligence?
No. A citation helps but is not required in a civil claim.
What if there were no witnesses?
Physical evidence, video, vehicle data, 911 audio, and the crash report can still support your claim.
Is the police report enough to prove fault?
Not by itself. It is useful, but the officer’s fault opinion is not final in a civil case, so your own evidence matters.
What evidence disappears the fastest?
Business and traffic camera video, dashcam footage, and vehicle event data can be overwritten or lost in days. Send preservation requests early.
Can I still recover if I was partly at fault?
Yes, reduced by your percentage of fault. [A.R.S. 12-2505]
Does texting while driving prove negligence?
It can support a claim when phone records and witnesses show the driver was distracted. A lawyer may need legal process to obtain the records.
How long do I have to file a claim in Arizona?
Generally 2 years for most personal injury claims. Government claims have shorter notice deadlines. [A.R.S. 12-542; A.R.S. 12-821.01]
Should I talk to the other driver’s insurance company?
You can report the crash, but speak with an attorney before giving a recorded statement.
How much does a lawyer cost?
We work on contingency, so you owe no fee unless we recover compensation for you.
How Kash Legal helps prove negligence
Evidence preservation is the first step in our process. We send preservation requests, collect records and footage, investigate the scene, and work with experts when the case calls for it. Then we value your full damages and negotiate with the insurer, and if an adequate offer is not made, we prepare the case for court.
Get a free evaluation of your Arizona crash claim
Not sure the other driver’s fault can be proven? Let us review the evidence. Our team will look at what you have, tell you what is missing, and explain your options in plain English or Spanish.
- Free and confidential: your case evaluation costs nothing, and what you share stays private.
- No fee unless we recover: we work on a contingency fee, so you owe no fee unless we recover compensation for you.
- Spanish-language service: hablamos español. Servicio en español disponible.
- Act quickly: video and vehicle data can be overwritten in days, and injury claims have filing deadlines.
Call us now or request your free case review here.
