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A commercial truck crash is not a car accident with bigger metal. The rules are different, the defendants are different, the insurance is different, and the evidence starts disappearing within days. If you’re looking for Phoenix truck accident lawyers because an 18-wheeler hit you on I-10 or a delivery rig rear-ended you in Deer Valley, the most useful thing you can do today is understand why your case isn’t a routine fender-bender claim.
Here’s what most people don’t realize: trucking is a federally regulated industry. The driver, the carrier, the broker, the shipper, and the maintenance contractor all sit under a stack of Federal Motor Carrier Safety Administration (FMCSA) rules that don’t apply to your neighbor in a Honda. Those rules shape who can be sued, what evidence exists, and how much insurance is on the table. This article walks through it. For more on how we approach these cases, see our truck accident practice overview.
A passenger car crash usually involves two drivers, two insurance policies, and one set of state traffic laws. A commercial truck crash usually involves:
That stack matters because each entity may carry its own insurance, and each one may share fault. In Arizona, that changes the math in a specific way we’ll get to below.
The injuries are also categorically different. A loaded tractor-trailer can weigh up to 80,000 pounds. A passenger car weighs around 4,000. When the two collide, the people in the car get the physics. We see traumatic brain injuries, spinal cord injuries, multiple orthopedic fractures, and long-term medical cost projections that don’t show up in typical car-on-car cases.
Identifying every potentially liable party is a important early-case decisions. Miss a defendant, and you can cap your own recovery before you’ve even filed.
The driver. Obvious, but often the least valuable defendant. Drivers carry minimal personal coverage.
The motor carrier (trucking company). Under the doctrine of respondeat superior, an employer is generally liable for the actions of an employee acting within the scope of employment. In Arizona, that means the trucking company is on the hook for the driver’s negligence on the job. Even when carriers try to label drivers as independent contractors, FMCSA rules treat the carrier as responsible for safety compliance, which often pulls them back into the case.
The broker. Freight brokers arrange loads between shippers and carriers. If a broker hired an unsafe carrier with a known bad safety record, the broker may face a negligent-selection claim.
The shipper. If cargo was loaded improperly, shifted, and caused the crash, the shipper or loading company may share fault.
The maintenance contractor. Brake failure, tire blowout, lighting failure. If a third-party shop did the work, that shop’s negligence can be the proximate cause.
A separate truck owner. Tractors and trailers are often owned by different entities. The leasing relationship matters.
When we identify five potentially liable parties in a Phoenix case, we’re not being aggressive for the sake of it. We’re protecting your recovery against Arizona’s several-liability framework, which we’ll cover in a moment.
The FMCSA publishes the rules commercial drivers and carriers have to follow. A few sets matter most for liability:
Hours of service. Under 49 CFR § 395.3, a property-carrying commercial driver may drive a maximum of 11 hours after 10 consecutive hours off duty, and may not drive beyond the 14th hour after coming on duty. Sleep-deprived driving is one of the leading causes of catastrophic truck crashes, and hours of service violations show up regularly in the ELD data when we pull it.
Drug and alcohol testing, medical qualification, vehicle inspection. FMCSA mandates pre-employment drug testing, regular vehicle inspections, and medical certification of drivers. Each one is a paper trail. Each one is a place where carriers can cut corners.
Insurance minimums. This one changes settlement strategy on its own.
Under 49 CFR § 387.9, motor carriers operating commercial vehicles over 10,001 pounds in interstate commerce must maintain a minimum of $750,000 in liability coverage. Carriers hauling hazardous materials must carry more depending on the cargo. Many large fleets carry $1 million per accident as a matter of course, with excess policies layered on top.
Compare that to a typical Arizona passenger policy. Arizona’s minimum is 25/50/15: $25,000 per person, $50,000 per accident, $15,000 property damage. Most drivers carry slightly more, but not by much.
Why does this matter? Because in a serious passenger-car case, the fight is often finding enough insurance to cover the damages. In a truck case, the insurance is usually there. The fight is over how much of it the carrier’s insurer will release, and how hard they’ll push back on liability and damages to keep that number down.
Trucking insurers know they’re sitting on a seven-figure policy. They hire defense firms early, send rapid-response investigators to the scene within hours, and build a defense file before you’ve even left the hospital. That’s the asymmetry. Your job, and ours, is to close that gap fast.
This is the single biggest reason a routine PI approach can fail in trucking cases.
Electronic logging devices. Under 49 CFR § 395.8, commercial trucks must use ELDs to record driving time, engine hours, vehicle movement, location, and miles driven. The data can show whether the driver was over hours, how fast the truck was moving in the seconds before impact, and when the brakes were applied. Carriers are required to retain certain ELD records under FMCSA rules. In practice, data can be overwritten or lost much sooner if no one demands preservation.
Dashcam and forward-facing video. Many fleets run inward and outward camera systems. Video is often stored on a rolling loop and overwritten within days unless flagged.
Driver qualification file. Application, medical card, drug test results, prior employer checks. Required to be maintained under FMCSA rules.
Maintenance and inspection records. Daily vehicle inspection reports (DVIRs), service history, brake inspection logs.
Bills of lading, dispatch records, GPS data. Establish where the truck was, when, and under what schedule pressure.
The mechanism that protects this evidence is a spoliation letter (also called a preservation letter) sent to the carrier and its insurer within days of the crash. Once they’re on notice, destruction of evidence becomes its own legal problem for them. We typically send these within 24 to 72 hours of being retained. Cases where the trucking black box evidence gets preserved early are categorically stronger than cases where it doesn’t.
Commercial truck traffic in the Phoenix metro concentrates on a few corridors, and ADOT crash data shows the same patterns year after year.
The Stack Interchange (I-10 / I-17). Northwest of downtown, this is one of the busiest interchanges in the state and a chokepoint for east-west freight moving between Tucson and California. High merge angles, heavy lane changes, and dense commercial traffic make it a frequent crash zone.
The Mini-Stack (I-10 / SR-202 / SR-51). South-central Phoenix, near Sky Harbor. Constant truck traffic to and from the airport’s cargo facilities and warehouse districts.
I-17 corridor (Black Canyon Freeway). The primary north-south truck route. Sustained grades, weather variability heading north, and high speeds.
I-10 west toward Buckeye and Goodyear. Warehouse and logistics growth in the West Valley has dramatically increased truck volume on this stretch over the last several years.
Loop 202 (South Mountain Freeway). Designed in part to route truck traffic around downtown. Now carries heavy commercial volume.
If your crash happened on one of these corridors, expect that the carrier’s investigators know the area well, and may have a defense narrative ready before you’ve finished the police report.
This is where the legal mechanics get specific, and where trucking cases diverge sharply from passenger cases.
Comparative negligence. Arizona reduces your recovery by your percentage of fault. If a jury finds you 20% at fault and your damages are $1,000,000, you recover $800,000. There’s no bar at 50%, unlike many states. You can be largely at fault and still recover a proportional share of your damages. The mechanics of Arizona’s comparative negligence rule reward careful liability work.
Several liability. This is the one that matters most in multi-defendant truck cases. Arizona generally uses several liability, not joint liability. Each defendant pays only their assigned share of fault. No defendant is on the hook for another defendant’s share. (There are narrow statutory exceptions, but the general rule controls most truck cases.)
What that means in practice: if the driver is found 40% at fault, the carrier 30%, the maintenance shop 20%, and you 10%, each defendant writes a check for their portion only. If the maintenance shop is bankrupt or uninsured, that 20% can be gone. The other defendants don’t typically pick it up.
That’s why naming every viable defendant early matters. Arizona also allows defendants to designate “non-parties at fault,” meaning they can point at people who aren’t even in the case to shift blame onto an empty chair. Defense attorneys in truck cases use this tactic regularly. Good plaintiff’s work counters it by building each defendant into the case properly and investigating non-party designations as they come in.
In Arizona, you generally have two years from the date of the injury to file a personal injury lawsuit under A.R.S. § 12-542. That’s Arizona’s two-year statute of limitations. Miss it, and the claim can be gone regardless of how strong the liability evidence is.
Two wrinkles specific to trucking:
Specific deadlines depend on the facts, so confirm yours with an attorney before relying on a general rule.
If you’re reading this and the crash was recent, here’s the practical sequence:
The post on what to do after being hit by a semi-truck in Phoenix covers the first-72-hours sequence in more depth.
Damages in a serious truck case generally fall into two categories:
Economic damages. Quantifiable financial losses: emergency room and hospital bills, surgery costs, follow-up care, physical therapy, prescription costs, lost wages, lost earning capacity, future medical costs, and property damage. Under Arizona jury instructions, these are proven with bills, pay records, and expert testimony.
Future medical costs specifically require expert medical testimony projecting what treatment the injury will require over a lifetime. In severe truck-crash injuries (spinal fusion, traumatic brain injury, amputations), future-care projections can run high on their own. That’s why life-care planners and medical economists are often part of how we build these cases.
Non-economic damages. Pain, suffering, loss of enjoyment of life, disfigurement, emotional distress. There’s no formula. Juries assign value based on evidence of how the injury changed your life.
In rare cases involving egregious conduct (a carrier ignoring known safety violations, a driver under the influence), punitive damages may be available. Most cases don’t qualify.
Practically, yes. Truck cases involve federal regulations, ELD evidence, multi-defendant fault analysis, and policy structures that don’t come up in a typical passenger-car case. A firm that handles car cases but treats trucking as a sub-category can miss preservation deadlines and undervalue the case. Ask any attorney you’re considering how many commercial-truck cases they’ve handled in the last two years and what they did to preserve ELD evidence.
Generally two years from the date of injury under A.R.S. § 12-542 for personal injury claims. That’s a hard deadline. If a government-owned commercial vehicle was involved, you also have a 180-day notice-of-claim deadline under A.R.S. § 12-821.01. Confirm your specific deadline with an attorney.
You can still recover. Arizona uses comparative negligence, which reduces your recovery by your percentage of fault but doesn’t bar it outright the way some states do. Even at a high fault percentage, you can recover a proportional share of your damages.
Federal law (49 CFR § 387.9) requires a minimum of $750,000 in liability coverage for trucks over 10,001 pounds in interstate commerce. Hazmat carriers carry more. Many large fleets carry $1 million primary policies with excess coverage stacked above that. Insurance availability is rarely the limiting factor in truck cases.
Not before getting legal guidance. You are generally not required to give a recorded statement to the other party’s insurer, and what you say can be used to reduce or deny your claim. Cooperation duties to your own insurer depend on your policy.
ELD (electronic logging device) data, dashcam video, driver qualification files, maintenance records, the driver’s hours-of-service logs, and the police report. Most of this evidence is controlled by the carrier and can be lost or overwritten within days if a preservation letter doesn’t go out fast.
One of the most expensive mistakes in a commercial truck case is waiting. Insurers move fast. ELD data can overwrite. Dashcam loops cycle. The preservation letter that protects your claim needs to go out in days, not weeks.
Free case review with Jared J. Pehrson: (602) 345-1818. We answer 24/7. Talk to us before talking to the trucking company’s insurer.
By Jared J. Pehrson | Impact Legal Car Accident Attorneys
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