Truck Accident Laws in Wyoming (2026): Deadlines & Liability

A wreck with a commercial truck is not just a larger car accident. The truck is governed by a layer of federal safety rules, the company behind the driver is almost always part of the case, and the insurance involved dwarfs a normal car policy. This guide explains the Wyoming rules that shape a truck-injury or wrongful-death claim, beginning with the filing deadlines and how fault is shared, then the uniform federal trucking rules that apply on every interstate route. It is general information, not legal advice.

This page is part of our Truck Accident Laws by State series. Deadlines are strict and every crash is different, so use the figures below as a starting point and confirm the current law before relying on it.

The Wyoming deadlines to sue (statute of limitations)

For a personal-injury claim, Wyoming gives an injured person four years from the date of injury to file suit under Wyoming Statutes 1-3-105, the catch-all limitation for an action for injury to the rights of the plaintiff not arising on contract. That four-year window is longer than the deadline in most states, but it is still a hard cutoff.

Wrongful death is much shorter. A wrongful-death action must be commenced within two years of the date of death under Wyoming Statutes 1-38-102(d). The two-year clock runs from the death, which can fall on a different date than the crash itself. Wyoming does toll that limit while a separate action to appoint the wrongful-death representative is pending, from the date that action is filed until thirty days after the order appointing the representative is entered (Wyo. Stat. 1-38-103(b)(ii)). Claims against governmental defendants also carry their own short notice deadlines under the Wyoming Governmental Claims Act. Because of the gap between the four-year injury deadline and the two-year death deadline, the safe approach is to treat the two-year clock as controlling whenever someone has died.

How Wyoming splits fault: modified comparative fault

Wyoming follows modified comparative fault with a 51% bar, set out in Wyoming Statutes 1-1-109. A jury determines the total damages and the percentage of fault attributable to each actor, including the plaintiff. The plaintiff's contributory fault does not bar recovery as long as it is not more than 50% of the total fault of all actors, but any damages are reduced in proportion to the plaintiff's share. If the plaintiff's fault is 51% or more, recovery is barred entirely. Wyoming has also largely abolished joint-and-several liability, so each defendant is generally responsible only for its own percentage of fault rather than for the whole award. The Wyoming Supreme Court has applied this framework in cases such as Anderson Highway Signs & Supply, Inc. v. Close, 6 P.3d 123 (Wyo. 2000).

This matters in truck cases because the defense will try to push fault onto the injured driver to cross the 51% line and to spread the rest among multiple parties. Evidence that the truck driver or carrier broke a federal safety rule, discussed below, is frequently what keeps the injured person's share of fault low.

No-fault and insurance in Wyoming

Wyoming is not a no-fault state. It uses a traditional at-fault, or tort, system, so the driver who caused the crash, that driver's insurer, and the trucking company are responsible for the harm. There is no PIP no-fault threshold an injured person must clear before bringing a claim.

Wyoming's minimum auto-liability limits are 25/50/20: $25,000 per person and $50,000 per accident for bodily injury, and $20,000 for property damage (Wyo. Stat. 31-9-405). Those amounts are small next to the harm a loaded tractor-trailer can cause, which is why the federal trucking insurance minimum below is so important.

Damage caps in Wyoming

Wyoming is unusually plaintiff-protective on this point. Article 10, Section 4 of the Wyoming Constitution provides that no law shall be enacted limiting the amount of damages to be recovered for causing the injury or death of any person. As a result, there is no statutory cap on compensatory damages (including pain and suffering) or on punitive damages in an ordinary private truck case. The one notable limit is for claims against governmental entities under the Wyoming Governmental Claims Act, which caps recovery against the government; that limit does not apply to a claim against a private trucking company or driver.

Federal trucking rules: the FMCSA layer

Interstate commercial trucks are regulated by the Federal Motor Carrier Safety Administration, and its rules in Title 49 of the Code of Federal Regulations apply on every interstate route, Wyoming included. The rules that matter most after a crash are:

• Hours of service (49 CFR Part 395): a property-carrying driver may drive at most 11 hours after 10 consecutive hours off duty, may not drive beyond the 14th hour after coming on duty, must take a 30-minute break after 8 hours of driving, and is capped at 60 hours in 7 days or 70 hours in 8 days. Fatigue-rule violations are a leading cause of serious truck crashes.
• Electronic logging devices (ELDs): most drivers must record their duty status with an ELD, which makes the hours-of-service data far harder to falsify and a key piece of evidence.
• Driver qualification and CDL (49 CFR Part 391): the carrier must confirm the driver is qualified, medically fit, and properly licensed.
• Drug and alcohol testing (49 CFR Part 382): pre-employment, random, and post-accident testing is required.
• Inspection and maintenance (49 CFR Part 396): the carrier must systematically inspect, repair, and maintain its vehicles and keep records.

A documented violation of any of these rules can be powerful evidence of negligence, which is why the Federal Motor Carrier Safety Administration regulations are central to a truck case.

Who can be held liable after a truck crash

A truck case routinely has more than one defendant, and several of them are companies. Potential defendants include the driver; the motor carrier, which is usually responsible for its driver's on-the-job conduct and can also be sued directly for negligent hiring, training, supervision, or maintenance; a freight broker or shipper; the company that loaded or secured the cargo if a load shift caused the crash; and a manufacturer if a defective brake, tire, or other part failed. Sorting out which entities are responsible, and how their fault compares to the plaintiff's under the 51% bar, is one of the main reasons truck cases are more complex than car cases, and it matters even more in Wyoming because each defendant is generally liable only for its own share of fault.

Federal minimum insurance: $750,000 and up

Federal law requires far more coverage from interstate trucking companies than states require from ordinary drivers. Under 49 CFR 387.9, a for-hire carrier of general freight in interstate commerce must maintain at least $750,000 in public-liability coverage, and carriers hauling hazardous materials must carry up to $5,000,000. That is the financial reality behind why truck-crash claims are valued and defended so differently from the 25/50/20 minimum that applies to a typical Wyoming car.

Preserving the evidence before it disappears

Much of the best evidence in a truck case lives inside the truck and the carrier's files, and a lot of it can be overwritten or routinely discarded. ELD and logbook data, the engine control module (the truck's onboard "black box," which can record speed, braking, and throttle), dashcam footage, dispatch records, and maintenance files can all be lost within weeks. Because of that, a written preservation or spoliation letter sent to the carrier early, demanding that it keep this data, can make a decisive difference. The police crash report, photographs, and your medical records should be preserved on your side as well.

How injury cases are typically handled

Most personal-injury and wrongful-death lawyers in Wyoming work on a contingency fee, meaning the fee is a percentage of any recovery and there is usually no upfront charge, and most offer a free initial consultation. No lawyer can promise a particular result or dollar amount, because the outcome turns on liability, the available insurance, the comparative-fault split, and the harm actually proven. The practical takeaways are simple: a clock is running (four years for injury, two for wrongful death), the evidence inside the truck is perishable, and the sooner the facts are pinned down, the stronger the record will be.