Idaho Truck Accident Settlements: Statute, Negligence Rule & Settlement Guide
Since 2016, Idaho has allowed trucks up to 129,000 pounds on its interstates, up from 105,500, after a decade-long pilot on state routes, putting some of the heaviest legal loads in the country onto mountain highways like I-84 and I-15. The state logged 62 large-truck fatalities in 2023. Idaho caps non-economic damages under §6-1603, a $250,000 base adjusted annually for wages and recently near $490,000, while economic damages stay uncapped. Idaho Code §5-219 sets a two-year filing deadline, and a modified comparative rule bars recovery once an injured person is 50 percent or more at fault.
Fast Facts: Idaho
- Statute of Limitations (PI)
- 2 years from the accident
- Statute of Limitations (Wrongful Death)
- 2 years
- Negligence Rule
- Modified Comparative (50% bar)
- Settlement Multiplier vs National
- 0.9×
- Major Truck Routes
- I-84, I-15, I-90, I-86
- FMCSA Jurisdiction
- Western Service Center
Truck Accident Deaths in Idaho
In 2023, 62 people were killed in crashes involving large trucks in Idaho, according to NHTSA's Large Trucks: 2023 Data. Nationally, about 70% of those killed in large-truck crashes are occupants of the other vehicle — not the truck — because a loaded tractor-trailer can weigh 20–30 times as much as a passenger car.
Since 2016 Idaho has allowed trucks up to 129,000 pounds on its interstate highways — up from 105,500 — after a decade-long pilot program on state routes. High truck volume is one reason Idaho sees the crash numbers it does.
Statute of Limitations: 2 Years
Idaho requires personal injury claims to be filed within 2 years of the accident date — see Idaho Code §5-219.
Wrongful death claims arising from Idaho truck accidents have a separate 2-year deadline, measured from the date of death (not date of accident, when these differ).
Missing the statute of limitations ends the case entirely — even a strong liability case with massive damages cannot be filed after the deadline. See our complete post-accident guide for the actions to take in the first weeks.
Idaho's Negligence Rule: Modified Comparative (50% bar)
Modified comparative — 50% or more fault bars recovery.
Practical impact: If you're 50% or more at fault, you recover nothing. At 49% or less, recovery is reduced proportionally.
Damage Caps in Idaho
Idaho caps non-economic damages (a $250,000 base adjusted annually for wages — recently around $490,000; §6-1603). Economic damages are uncapped; punitive damages are capped at the greater of $250,000 or 3× compensatory.
Estimating Settlement Value in Idaho
Idaho's state multiplier of 0.9× reflects how its jury awards trend close to the national average. This factor multiplies against your base damages in the multiplier method.
Sample calculation for a moderate Idaho truck accident claim:
Medical bills: $25,000
Lost wages: $10,000
Future medical: $15,000
Pain & suffering: $25,000 × 2.5 multiplier = $62,500
─────────────
Subtotal: $112,500
Idaho state factor (0.9×): $101,250
For a personalized estimate using your numbers, use our free settlement calculator — it applies Idaho's state factor automatically.
Major Freight Routes Through Idaho
Truck accident liability cases in Idaho concentrate on the state's major interstate and federal highway corridors:
- I-84
- I-15
- I-90
- I-86
Conservative jury patterns. Mountain interstate traffic on I-84, I-15, I-90.
Federal Rules Also Apply in Idaho
Idaho law sets the statute of limitations (2 years), the modified comparative (50% bar) rule, and the damage-cap rules above. On top of that, commercial trucks are governed by federal FMCSA rules — hours-of-service limits, the $750,000 minimum insurance floor, electronic logging, and post-crash drug testing — that apply in every state. Those violations are often where a Idaho truck case is won. See our guides on FMCSA violations in truck accidents, what to do after a crash, and how long a lawsuit takes.
Frequently Asked Questions: Idaho Truck Accidents
How long do I have to file a truck accident claim in Idaho?
2 years from the date of the accident for personal injury. 2 years for wrongful death.
What is Idaho's comparative negligence rule?
Idaho follows the Modified Comparative (50% bar) rule. Modified comparative — 50% or more fault bars recovery.
Are there caps on damages in Idaho truck accident cases?
Idaho caps non-economic damages (a $250,000 base adjusted annually for wages — recently around $490,000; §6-1603). Economic damages are uncapped; punitive damages are capped at the greater of $250,000 or 3× compensatory.
How many people are killed in truck crashes in Idaho?
62 people were killed in crashes involving large trucks in Idaho in 2023, according to NHTSA. Most were occupants of other vehicles, not the trucks involved.
How long does a Idaho truck accident lawsuit typically take?
Median time to settlement runs about 12–18 months for moderate cases and 24–36 months when injuries are severe or liability is disputed. See how long a truck accident lawsuit takes for the full timeline.