State Guide Montana

Montana Car Accidents: the filing discipline that keeps leverage intact, claim narrative pressure, and without hiding where the record really turns

Focused car accidents guidance for Montana on where early mistakes cost the most, claim narrative pressure, and the early order that prevents drift.

Reviewed January 2026 2 min read Official-source grounded Ver en Espanol En Español
Key Takeaways
  • Montana modified comparative fault: Mont. Code Ann. sec. 27-1-702; 51% bar (plaintiff at 51%+ fault = zero recovery; at 50% or less = proportional recovery). SOL: Mont. Code Ann. sec. 27-2-204 = 3 years from date of injury; tolled for minors (until 18 + 3 years from 18) + mental incapacity. Speed limits: Montana rural interstate 80 mph (enacted 2015; highest in US; formerly 75 mph after 1999; effectively no daytime speed limit until 1999 "reasonable and prudent" standard struck down in State v. Stanko, 1998 MT 323). Mandatory minimums: Mont. Code Ann. sec. 61-6-103; $25K/person + $50K/accident BI + $20K PD. UM/UIM: Mont. Code Ann. sec. 33-23-201; must offer at same limits as liability; automatic unless written rejection; stacking allowed in some circumstances (Transamerica Ins. Co. v. Royle, 202 Mont. 173 (1983) and subsequent decisions). WILDLIFE COLLISIONS: ~150,000 MT elk + white-tailed/mule deer + pronghorn (eastern MT plains) + bears (grizzly in NW MT/Glacier Country/greater Yellowstone ecosystem); elk collisions at US-93/MT-200/I-90 Missoula-Deer Lodge/Paradise Valley US-89 particularly dangerous (adult bull elk 700-1,100 lbs; windshield-height center of mass); wildlife collisions = comprehensive coverage (not collision; no at-fault party).
  • Glacier National Park (Flathead/Glacier counties; 1,013,000 acres; ~3M visitors/year; peak July-August): Going-to-the-Sun Road (50-mile transmountain road; Logan Pass at 6,646 ft; October to late June snow closure; vehicles exceeding 21 ft or 8 ft width prohibited above Avalanche Creek to St. Mary; extremely narrow); NPS federal land = FTCA (28 U.S.C. sec. 1346(b)) for NPS negligence claims. I-90 commercial trucking: 552 miles Idaho border (Lookout Pass/Mineral County) to Wyoming/Montana border (near Sheridan); through Missoula + Butte (Silver Bow County) + Bozeman (Gallatin County) + Billings (Yellowstone County); FMCSA hours of service + CDL + 49 CFR Part 395 + HazMat placard requirements apply. Mountain passes: Marias Pass (US-2; 5,213 ft; October-May snow/ice; lowest Continental Divide crossing in MT) + Lolo Pass (US-12; 5,233 ft; Lewis and Clark route; avalanche closures) + MacDonald Pass (US-12; Lewis and Clark County; west Helena). US-93 motorcycle accidents: Missoula to Canadian border (Roosville/Lincoln County); elk/deer crossings at dawn/dusk; loose gravel/sand on Salish Mountains + Clark Fork River canyon curves; tourist traffic in Flathead Lake resort area (Polson/Bigfork/Lakeside).
  • Montana bad faith: Jacobsen v. Allstate Ins. Co., 2009 MT 248 (MT Supreme Court); duty of good faith to first-party claimants; bad faith tort = (a) denial/delay was unreasonable + (b) insurer knew/recklessly disregarded unreasonableness; compensatory + PUNITIVE damages available (Mont. Code Ann. sec. 27-1-221; required showing: oppressive + fraudulent + malicious conduct). Amtrak Empire Builder train-vehicle collisions: Chicago-Seattle/Portland route; northern MT via Havre + Shelby + Cut Bank + Glacier NP on BNSF Railway Marias Pass line; unprotected at-grade crossings in remote MT ranch/agricultural land; federal preemption (Federal Railroad Safety Act preempts some state crossing signal tort claims); BNSF duty to maintain crossing warnings + driver comparative negligence analysis. MT NOT a no-fault state: traditional tort state; no mandatory PIP; injured parties must sue at-fault driver's liability coverage or own UM coverage. Eastern MT agriculture on highways: Yellowstone County + Custer County + Prairie County + Dawson County; combines/tractors/grain wagons/swathers on state highways during planting/harvest = accident exposure for passing vehicles; Miles City/Glendive/Sidney agricultural communities.
Key Numbers — Montana All 50 states →
Filing Deadline 3 years
Fault Rule Modified Comparative
Insurance System At-Fault
Key Statute Mont. Code Ann. § 27-2-204
Car Accidents guide for Montana
Photo by jordan besson on Pexels

Montana car accident law operates in a state defined by extremes: the fourth-largest US state by area (147,040 square miles) with a population of only approximately 1.1 million people, the highest posted speed limits in the contiguous United States (Montana had no daytime speed limit for many years until a 1999 law established 75 mph on rural interlane highways), and a landscape where wildlife-vehicle collisions, single-vehicle accidents on unlit rural highways, and extreme winter weather conditions on mountain passes dominate the accident pattern. Montana has the highest traffic fatality rate per vehicle mile traveled of any US state in most years -- a distinction driven not by reckless drivers but by the geometry of the state: long distances between destinations, high speeds, wildlife, and winter conditions on two-lane highways like US-2 (the "Hi-Line" across northern Montana from Havre to Whitefish), US-93 (the corridor from Missoula through the Flathead Valley), and US-191 (the east Yellowstone corridor through the Paradise Valley). Montana personal injury law: Montana uses a modified comparative fault system with a 51% bar (Mont. Code Ann. sec. 27-1-702) -- a plaintiff who is found 51% or more at fault is completely barred from recovery.

Montana's statute of limitations for personal injury claims is three years (Mont. Code Ann. sec. 27-2-204), and the mandatory liability insurance minimum is $25,000 per person/$50,000 per accident for bodily injury and $20,000 per accident for property damage (Mont. Code Ann. sec. 61-6-103). Montana has adopted the Uninsured Motorist statute (Mont. Code Ann. sec. 33-23-201) requiring UM coverage to be offered at the same limits as liability coverage unless the insured rejects UM coverage in writing. The Montana Supreme Court's decision in Jacobsen v. Allstate Ins. Co., 2009 MT 248, established the framework for bad faith insurance claims in Montana -- the Court held that insurers have a duty of good faith and fair dealing that runs to first-party claimants, and that breach of this duty supports a tort claim for extra-contractual damages.

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