Montana is the only state in the country that doesn’t set a speed limit on some sections of its rural interstates during the day — and until relatively recently, the car seat law was similarly relaxed. The current statute requires a child restraint through age 6 and under 60 pounds, which is below the national standard of age 8. Montana also has no rear-facing mandate in the statute, no booster seat requirement, and one of the lowest fines in the country at $100. What makes Montana unique is the combination of high-speed, long-distance rural driving and a less prescriptive child safety law. I’ve worked with families in Billings, Missoula, and the ranching communities where the nearest hospital can be 90 minutes away.
Montana recorded 213 traffic fatalities in 2024, a decrease from 228 in 2023, but the state’s per-capita fatality rate remains among the highest in the nation due to its small population. Speed was the leading factor in fatal crashes, and unbelted occupants accounted for over 60% of vehicle occupant deaths. Montana’s vast distances and high-speed roads make proper child restraint use essential.
This guide breaks down every requirement in Montana’s current child passenger safety law, explains the fines and enforcement rules, covers special situations, and answers the most common questions parents ask.
View our lists of free car seat programs by type:
Montana car seat laws by age
Montana’s child restraint statute (MCA § 61-9-420) requires children under 6 and under 60 pounds to be in a child restraint:
Rear-facing (recommended through age 2+): Montana law does not specify a rear-facing age. The Montana Department of Transportation and AAP recommend rear-facing until at least age 2. Most modern convertible seats rear-face to 40–50 pounds.
Car seat (under age 6 and under 60 lbs): All children under 6 years old who weigh less than 60 pounds must be properly secured in a child restraint system approved by the U.S. Department of Transportation. Montana’s law doesn’t distinguish between car seats and boosters — any federally approved child restraint meets the requirement.
Seat belt (age 6+ or 60+ lbs): Children 6 and older or weighing 60+ pounds must wear a seat belt. All occupants in Montana must be belted.
Back seat recommendation: Montana recommends all children under 13 ride in the back seat. This is a safety recommendation, not a legal mandate.
Important note: Montana’s law is less detailed than most states. It doesn’t require a booster seat specifically, doesn’t mandate rear-facing, and uses age 6/60 pounds as the cutoff rather than the more common age 8/4’9″ standard. Parents should follow AAP recommendations, which extend far beyond Montana’s legal minimum.
If you’re not sure which seat fits your child’s current stage, our best-rated convertible car seats guide covers every transition from rear-facing infant through booster-ready child.
Fines and enforcement
Montana’s child restraint violation carries:
Fine: $100 per violation.
Montana’s child restraint law is a primary enforcement law — an officer can pull you over solely for observing an improperly restrained child.
No points are assessed on your driver’s license for a child restraint violation.
Special situations
Taxis: Montana does not explicitly exempt taxis from child restraint requirements.
Rideshares (Uber/Lyft): Child restraint laws apply. Bring a car seat when traveling with a child.
Vehicles without back seats: If the vehicle has no rear seat, a child may ride in the front with an appropriate restraint — but never in front of an active airbag in a rear-facing seat.
Leaving a child unattended in a vehicle: Montana does not have a specific statute, but general child endangerment laws apply. Montana’s extreme temperature range makes this particularly dangerous.
Smoking in a vehicle with children: Montana does not have a law prohibiting smoking in a vehicle with child passengers.
Car seat replacement after a crash: No state law requires it, but NHTSA and all major manufacturers recommend replacing any seat involved in a moderate-to-severe crash.
What to do if you get a ticket
1. Get the correct car seat. Even though Montana’s law only covers children under 6, use a booster until the seat belt fits properly (around 4’9″ tall).
2. Get it inspected. Safe Kids Montana coalitions in Billings, Missoula, and Great Falls offer car seat checks. Montana Highway Patrol and local fire departments also provide inspections in some areas. You can find a certified technician through the NHTSA technician locator.
3. Bring documentation to court. Proof of compliance can help at your hearing.
If you need a free or low-cost car seat, check our guide to free car seats in Montana for verified programs.
Frequently Asked Questions
When can my child sit in the front seat in Montana?
Montana does not set a legal age for front-seat riding. Safety experts recommend all children under 13 ride in the back seat.
What is the fine for a car seat violation in Montana?
$100 per violation. No points are added to your license.
Does Montana require rear-facing until age 2?
No — Montana’s statute doesn’t specify a rear-facing age. The AAP strongly recommends rear-facing until at least age 2. Our best-rated convertible car seats guide includes seats that rear-face to 40–50 pounds.
Does Montana require booster seats?
Not specifically. Montana requires a “child restraint system” for children under 6 and under 60 pounds but doesn’t mandate a booster seat by name. Safety experts strongly recommend a booster until the seat belt fits properly (around 4’9″ tall, typically age 8–12).
Can I use a secondhand car seat in Montana?
Montana doesn’t prohibit used car seats, but verify the seat hasn’t been in a crash, isn’t expired, isn’t recalled, and has all original parts. Check the NHTSA recall database. Our guide on what to do with old car seats covers safe disposal options.
Where can I get my car seat inspected in Montana?
Safe Kids Montana coalitions in Billings, Missoula, and Great Falls offer inspections. Montana Highway Patrol provides assistance in some areas. Find a certified CPS technician near you through NHTSA’s locator.
