The truck accident statute of limitations in Wyoming appears to be 4 years from the date of the crash (Wyo. Stat. § 1-3-105(a)(iv)(C)). Wrongful death generally runs 2 years from the date of death. If a government vehicle or entity was involved, formal written notice is generally required first, on its own clock: 2 years. The evidence clock is shorter than all of them.
Before you rely on these numbers
The statutory figures on this page have not yet been verified against current statute text by a licensed attorney. They are published with their citations so they can be checked, and they should be treated as a starting point for a conversation with a Wyoming lawyer — not as a legal conclusion. Statutes change: Florida cut its personal injury period in half in 2023 and Louisiana doubled its own in 2024.
Your deadlines in Wyoming, calculated
Enter the date of your crash and the tool below will work out both clocks — the legal filing deadline and the much shorter window before the proof can be destroyed. Wyoming is already selected. Nothing you type is sent anywhere.
What makes Wyoming different
Wyoming's four-year personal injury deadline halves to two for wrongful death. Its Governmental Claims Act is also unusual in having a constitutional dimension: Wyoming courts require an itemised, signed claim and enforce that requirement strictly, and suit must then be filed within one year of presenting the claim. Wind-related blow-over crashes on I-80 frequently turn on ECM and weather data that disappear within weeks.
The four Wyoming deadlines that matter
| Deadline | Period | Runs from | Citation |
|---|---|---|---|
| Personal injury lawsuit | 4 years | the date of the crash | Wyo. Stat. § 1-3-105(a)(iv)(C) |
| Wrongful death claim | 2 years | the date of death | Wyo. Stat. § 1-38-102(d) |
| Notice — state entity | 2 years | the date of the crash | Wyo. Stat. § 1-39-113 |
| Notice — city, county or district | 2 years | the date of the crash | Wyo. Stat. § 1-39-113 |
On the wrongful death period: Half the personal injury period.
Claims against a government entity in Wyoming
The shortest government notice window found for Wyoming — 2 years (Wyo. Stat. § 1-39-113). This is the deadline that quietly ends claims: it comes due long before the ordinary filing deadline, it is a precondition to suing rather than a suggestion, and missing it usually bars the claim entirely no matter how strong the case is.
Governmental Claims Act notice within two years, plus a constitutional itemised-claim requirement that Wyoming courts enforce strictly. Same for counties, cities and school districts. Suit must then be filed within one year of filing the claim.
Public fleets you could realistically be hit by in Wyoming: WYDOT plow and maintenance trucks, county road and bridge equipment, municipal fleets in Cheyenne and Casper, and school district buses. If you are not certain whether the vehicle that hit you was one of these, work to the shorter deadline until somebody confirms otherwise. The downside is not symmetrical.
If the injured person was a minor
Tolled to age 18 in Wyoming under Wyo. Stat. § 1-3-114 — the clock generally does not start until the injured person turns 18.
That pause applies to the court deadline. It does not apply to the evidence. A carrier is entitled to destroy a driver's logs six months after the crash whether the injured person is 8 or 38, and in many states a government notice deadline is not tolled for a child either. A tolled filing deadline and an untouched evidence deadline is the most dangerous combination on this page.
When the Wyoming clock starts
Applies. Wyoming runs the clock from when the claimant knew or should have known of the alleged malpractice or injury.
Why the evidence clock in Wyoming is much shorter
Wyoming's filing deadline is 4 years. The federal retention rules that govern the trucking company are measured in weeks and months:
- Dashcam and telematics video — often 30 days or less. No federal retention requirement — vendor and carrier policy only.
- ECM / black box data — overwritten as the tractor keeps running, and routinely lost when it is repaired or resold.
- Driver logs and records of duty status — six months (49 CFR § 395.8(k)(1)).
- Maintenance and repair records — one year while the vehicle is in the carrier's control (49 CFR § 396.3(c)).
- Annual inspection report — 14 months (49 CFR § 396.21(b)(1)).
The way to stop those clocks is a preservation letter to the carrier — a written demand that specific evidence be kept. Until it arrives, destroying records at the end of a retention period is routine and lawful. Our FMCSA regulations and evidence guide explains what each of these records contains.
Truck traffic in Wyoming
I-80 across southern Wyoming is one of the highest-elevation and most weather-exposed freight corridors in the country, with regular closures for wind and blow-over risk. The Powder River Basin's coal and energy traffic adds heavy haulage on state routes.
The corridors where these crashes concentrate: I-80 (Cheyenne–Laramie–Rock Springs–Evanston), I-25 (Cheyenne–Casper–Sheridan), I-90 through the northeast, US-287 and US-26 and WY-59 through the Powder River Basin.
Neighbouring states have different clocks
A crash a few miles across a state line can be governed by a completely different deadline. If you are not certain which state your crash happened in — near a border, on a bridge, or on an interstate you were travelling at speed — check both.
| State | Injury deadline | Wrongful death |
|---|---|---|
| Montana | 3 years | 3 years |
| South Dakota | 3 years | 3 years |
| Nebraska | 4 years | 2 years |
| Colorado | 3 years (motor vehicle) | 2 years |
| Utah | 4 years | 2 years |
| Idaho | 2 years | 2 years |
Or use the filing deadline calculator to compare any state, and the full state index for all 50 states and D.C.
What to do next in Wyoming
- Get a preservation letter to the carrier. This is the most time-critical step and the one almost nobody hears about.
- Confirm whether a government entity was involved. That answer can replace your 4 years deadline with a far shorter notice window — 2 years.
- Do not give a recorded statement to the trucking company's insurer.
- Request the Wyoming crash report, which identifies the carrier, the DOT number and the insurer.
- Have a lawyer licensed in Wyoming confirm the dates above against the current statute.
Sources
- Hours of Service — records of duty status retention — 49 CFR § 395.8 (Federal Motor Carrier Safety Administration)
- Inspection, Repair, and Maintenance — record retention — 49 CFR Part 396 (Federal Motor Carrier Safety Administration)
- Accident register requirements — 49 CFR § 390.15 (Federal Motor Carrier Safety Administration)
- Large Truck and Bus Crash Facts — Federal Motor Carrier Safety Administration
Federal regulations and crash statistics are updated periodically. Figures cited on this page reflect the referenced publications at the time of writing; check the source for the current edition.