If you have already read general advice about car accident claims, most of it still applies: get treatment, document the scene, be careful with the adjuster. What that advice does not prepare you for is that a commercial truck claim runs on federal rules, usually involves more than one defendant, and depends on evidence that is legally required to exist for only a few months.
Here is what actually changes.
You May Be Suing More Than One Party
In a car crash there is usually one defendant. In a truck case there are often three or four. A motor carrier employing a driver is generally liable for that driver’s negligence within the scope of employment which is a meaningful contrast with a rideshare claim, where the platform argues its drivers are independent contractors and the employment question has to be fought.
Beyond that, the carrier faces claims based on its own conduct rather than the driver’s:
- Negligent hiring or retention, where the driver qualification file shows a record the carrier should have acted on
- Negligent training and supervision, including how hours-of-service compliance was actually monitored
- Negligent maintenance, where inspection records show a known defect
- Negligent entrustment, where the driver should not have been in the vehicle
Then the parties further up the chain: a freight broker that selected an unsafe carrier, a shipper whose loading or securement contributed, a trailer owner separate from the tractor owner, or a component manufacturer. Our guides to Arizona’s state and federal trucking laws and how a truck crash is investigated go further.
A Federal Rulebook That Does Not Apply to Car Drivers
Every one of these creates a document trail, and a violation helps establish the standard of care.
- Hours of service (Part 395). An 11-hour driving limit within a 14-hour on-duty window for property-carrying drivers, with weekly limits. Electronic logging devices connect to the engine control module and record driving time automatically, plus GPS position at duty-status changes.
- Inspection, repair and maintenance (Part 396). Annual inspections, daily driver vehicle inspection reports, and systematic maintenance records.
- Driver qualification (Part 391). An application showing three years of employment history, motor vehicle records from every state where the driver held a license in the past three years, and a current medical certificate.
- Drug and alcohol testing (Part 382). Post-accident testing is required after qualifying crashes and must be conducted within tightly defined windows measured in hours, not days.
None of this exists in an ordinary car claim. All of it is discoverable.
The Evidence Expires on a Federal Schedule, Not Arizona’s
This is the single most important difference, and the numbers are uncomfortable. Arizona gives you two years to file suit. Federal regulations require carriers to keep the records that prove what happened for far less time than that:
| Record | Required retention |
| Records of duty status, ELD data and supporting documents | 6 months § 395.8(k) |
| Driver vehicle inspection reports (DVIRs) | 3 months § 396.11 |
| Roadside inspection reports | 12 months § 396.9 |
| Annual periodic inspection report | 14 months § 396.21 |
| Maintenance files | 1 year, plus 6 months after the vehicle leaves the carrier’s control § 396.3 |
| Driver qualification file | 3 years after termination § 391.51 |
| Accident register and files | 3 years § 390.15 |
| Positive drug tests and alcohol results at or above .02 | 5 years § 382.401 |
Read the top two rows again. The daily inspection report that would show a known brake defect is required to survive three months. The logging data that would show a driver in hour thirteen is required to survive six. A claimant who waits a year before hiring anyone may find both lawfully destroyed, with no remedy because destroying a record after its retention period is not spoliation.
The counter is a preservation demand sent immediately, identifying each category by regulation and converting a retention schedule into a legal obligation. It should also cover the engine control module download before the tractor is repaired or released, dispatch messaging, and any onboard camera footage.
Because trucking companies often send their own investigators within hours, a Phoenix truck accident lawyer should be contacted immediately to preserve critical evidence.
One row is worth a second look for a different reason. The accident register under § 390.15 is a list of every crash the carrier has had, kept for three years which is where a pattern of similar incidents becomes provable rather than asserted.
Thirty Times the Insurance, and a Faster Defense
Federal financial responsibility rules set the minimum for a for-hire interstate carrier hauling general freight over 10,001 pounds at $750,000, rising to $1 million or $5 million for hazardous materials. Arizona’s minimum for an ordinary vehicle is $25,000 per person under A.R.S. § 28-4009.
Most for-hire policies also carry an MCS-90 endorsement, a federally mandated backstop obliging the insurer to pay a judgment for public protection even where a coverage defense might otherwise apply.
Higher exposure changes behavior. Carriers and their insurers commonly have investigators at the scene the same day, photographing, measuring, and interviewing while you are still in an emergency department. That asymmetry in the first seventy-two hours is the practical argument for acting quickly not urgency for its own sake.
Why Arizona’s Apportionment Rule Raises the Stakes
Identifying every defendant is not thoroughness, it is arithmetic. A.R.S. § 12-2506 abolished joint and several liability in Arizona, so each defendant is generally responsible only for its own percentage of fault.
If a jury assigns the driver 40%, the carrier 40%, and a broker 20%, you collect those shares separately. A party never identified or a nonparty at fault designated by a defendant is a share nobody pays. In a case with a carrier, a broker, a shipper, and a trailer owner, leaving one out is not a missed opportunity; it is a permanent reduction.
Your own fault matters too. Arizona applies pure comparative negligence under A.R.S. § 12-2505, so an award drops by your assigned share with no cutoff barring recovery.
Deadlines
Generally two years under A.R.S. § 12-542, running from the date of injury or, in a wrongful death action, the date of death. Where a public entity may share responsibility for a roadway or signal defect, a government vehicle notice of claim is generally due within 180 days under A.R.S. § 12-821.01, then one year to file. And if you were working when the collision happened, a third-party claim brought while receiving workers’ compensation generally must be instituted within one year under A.R.S. § 23-1023 or it is deemed assigned to the compensation carrier.
Four different clocks, and negotiation pauses none of them which is why the deadlines that apply to your claim are worth confirming in the first week.
Frequently Asked Questions
Why is a truck accident claim different from a car accident claim? Three reasons: a federal rulebook governs the driver and carrier and creates discoverable records that do not exist in a car case; there are usually multiple defendants including the carrier, a broker, or a shipper; and federal minimum insurance for a for-hire interstate carrier hauling general freight is $750,000 rather than Arizona’s $25,000 per person.
How long does a trucking company have to keep the driver’s logs? Six months. Records of duty status, electronic logging device data, and supporting documents must be retained for six months under 49 C.F.R. § 395.8(k). Daily driver vehicle inspection reports are required to be kept for only three months under § 396.11 both far shorter than Arizona’s two-year filing deadline.
Can I sue the trucking company or only the driver? Usually both. A carrier is generally liable for its employee driver’s negligence within the scope of employment, and it also faces independent claims for negligent hiring, retention, training, supervision, maintenance, or entrustment. A freight broker or shipper may be liable as well.
What is a preservation letter and why does it matter? A written demand that the carrier preserve specific categories of evidence ELD and duty-status records, engine control module data, dispatch communications, the driver qualification file, inspection and maintenance records, and camera footage. Sent early it creates a legal obligation to retain material that would otherwise be lawfully destroyed on schedule.
If several parties are at fault, can I recover everything from the carrier? No. A.R.S. § 12-2506 abolished joint and several liability in Arizona, so each defendant is generally responsible only for its own percentage. A party never identified, or one designated as a nonparty at fault, represents a share nobody pays which is why identifying every responsible party early affects what is actually collectable.
How much insurance does a commercial truck carry? Federal rules set the minimum for a for-hire interstate carrier hauling general freight in a vehicle over 10,001 pounds at $750,000, rising to $1 million or $5 million for hazardous materials. Most policies also carry an MCS-90 endorsement obliging the insurer to pay a judgment for public protection even where a coverage defense might otherwise apply.
The Practical Takeaway
The complexity is not academic. It comes down to a race between a two-year filing deadline and retention periods of three and six months, run against a defendant whose investigators arrived the same day.
Harris Injury Law, PLLC 1136 E Campbell Ave, Phoenix, AZ 85014 (480) 800-4878
Consultations are free and cases run on a contingency fee, meaning no attorney fee unless compensation is recovered. Request a consultation or meet our attorneys. Severe collisions often become brain injury claims, and we also handle 18-wheeler and tractor-trailer matters. Every case depends on its own facts; no outcome can be promised or predicted.
This article provides general information about Arizona and federal law and is not legal advice. Reading it creates no attorney-client relationship. Federal motor carrier regulations and Arizona statutes change. Consult a licensed Arizona attorney about your situation.
Reviewed by Jason A. Harris, Harris Injury Law, PLLC.





