Indiana’s seat belt law requires every person in a moving motor vehicle to wear a properly fastened seat belt, and an officer can stop you for that reason alone. The rule applies to drivers, front-seat passengers, and back-seat passengers. A violation is a $25 infraction, but since July 1, 2024, going unbuckled carries a second consequence that matters far more in dollars: if you’re hurt in a crash, the other side can now use your unbuckled status to reduce what a jury awards you.
Who Has to Wear a Seat Belt
Under Indiana Code 9-19-10-2, every occupant of a motor vehicle must have a seat belt properly fastened whenever the vehicle is in forward motion.1Indiana General Assembly. Indiana Code 9-19-10-2 – Use of Safety Belt by Motor Vehicle Occupants; Safety Belt Standards The statute makes no distinction between the front seat and the back. If you’re riding, you’re buckling.
The requirement applies only to vehicles that came from the factory with seat belts meeting Federal Motor Vehicle Safety Standard Number 208. Vehicles that were never manufactured with seat belts fall outside the law. That’s why many older and antique cars are effectively excluded, though not because the statute lists them. Aftermarket belts installed later in a classic car do not pull that vehicle back under the requirement, because the belts were not manufacturer-installed to federal standard.
Who Is Exempt
Indiana Code 9-19-10-1 lists fifteen situations in which an occupant does not need to wear a seat belt.2Indiana General Assembly. Indiana Code Title 9 Motor Vehicles 9-19-10-1 – Exemption From Safety Belt Requirement The ones most likely to matter to an everyday driver:
- Medical exemption: if a physician provides written documentation that you should not wear a seat belt for a medical reason, you’re exempt. Keep the letter in the vehicle so you can show it during a stop.
- Children under eight: covered by Indiana’s separate child restraint law rather than the adult seat belt statute.
- Delivery work: occupants of commercial vehicles or U.S. Postal Service vehicles making frequent pickup or delivery stops are exempt while doing that work. Rural postal carriers on a route and newspaper carriers making deliveries also qualify.
- Farm trucks: occupants of a farm truck being used on a farm for normal agricultural work.
- Recreational vehicles: occupants in the living quarters section of an RV, though the driver still has to buckle up.
- Construction sites: passengers, but not the driver, in a truck on a construction site.
- Tow truck cabs: a person riding in the cab of a recovery vehicle because their own vehicle is being towed.
The list also covers parade participants, occupants in the treatment area of an ambulance, occupants in the sleeping berth of a tractor cab, passengers in a utility vehicle during an emergency, and Bureau-designated driver examiners conducting a road test. There is no blanket exemption for antique or off-road vehicles by name.
Rules for Kids
Children under eight ride under a different statute. Indiana Code 9-19-11-2 requires every child younger than eight to be secured in a federally approved child restraint system according to the manufacturer’s instructions, and a violation is a Class D infraction.3Indiana General Assembly. Indiana Code 9-19-11-2 – Child Less Than Eight Years of Age
From age eight through fifteen, a child must be restrained by either a child safety seat or a seat belt in any seating position.4Indiana Criminal Justice Institute. CJI Traffic Safety – Children At sixteen, the standard adult rule takes over.
The Indiana State Police recommends more than the statute requires: rear-facing seats until the child outgrows the seat’s rear-facing limits, forward-facing harness seats after that (troopers encourage keeping children harnessed to at least 65 pounds), and belt-positioning boosters for children at least four years old and 40 pounds.5Indiana State Police. Child Passenger Safety A booster must be used with both a lap and shoulder belt; a booster with a lap-only belt is prohibited.
The Ticket, the Fine, and Your Driving Record
A seat belt violation is a Class D infraction with a $25 fine. There is no jail exposure; the consequence is financial.
Indiana is a primary enforcement state, so an officer can pull you over solely because someone in the vehicle appears unbuckled. No separate traffic offense is required. One counterweight in the law: police cannot set up seat belt checkpoints. Enforcement has to happen through ordinary patrol activity and traffic stops.
Indiana’s driver point system assigns values from zero to ten for moving violation convictions.6Bureau of Motor Vehicles. Driver Record Points A seat belt violation is a non-moving infraction, so it should not add points to your driving record. Insurers can still see infraction records, and some treat any traffic violation as a reason to look at your premium.
The 2024 Change: Seat Belts in Injury Lawsuits
This is where the stakes climb well past the fine. Before July 1, 2024, if you were hurt in a crash while unbuckled, the other driver’s lawyer generally could not tell the jury about it. The only exception involved product liability claims about the restraint system itself.
That door is now open. For any cause of action arising after June 30, 2024, a defendant can introduce evidence that you were not wearing a seat belt in a civil suit for injury damages.7Indiana General Assembly. Indiana Code 9-19-10-7 – Failure to Comply; Fault; Liability of Insurer The rule applies to plaintiffs who were at least fifteen years old at the time of the accident.
There are limits. Not wearing a seat belt still does not count as fault under Indiana’s comparative fault system. The statute says failure to comply with the seat belt law “does not constitute fault under IC 34-51-2 and does not limit the liability of an insurer.”7Indiana General Assembly. Indiana Code 9-19-10-7 – Failure to Comply; Fault; Liability of Insurer A jury cannot assign you a percentage of fault for the crash because you were unbuckled. But the jury can reduce your damages if the defendant proves two things: you were not wearing your seat belt, and wearing it would have reduced your injuries.
In a serious injury case, a successful seat belt defense can trim a damages award substantially, even though the defendant remains fully at fault for causing the collision. Anyone who habitually drives unbuckled is carrying a financial risk that has nothing to do with the $25 ticket.
Commercial Drivers
Commercial motor vehicle drivers work under a federal rule as well as the state law. 49 CFR 392.16 prohibits operating a commercial vehicle without being properly restrained, and it puts the obligation on both the driver and the carrier. A motor carrier cannot require or allow a driver to operate a belted commercial vehicle unless the driver is buckled in, and the rule reaches passengers in property-carrying commercial vehicles too.8eCFR. 49 CFR 392.16 – Use of Seat Belts
Because the duty runs to the employer as well, an unbuckled driver can bring consequences to the carrier: federal scrutiny, safety-rating fallout, and, in litigation after a crash, added exposure for negligent safety practices.
Indiana’s state-law exemption for delivery drivers making frequent stops does not carry over into federal regulation. A driver operating under federal jurisdiction has to comply with 49 CFR 392.16 even when Indiana law alone would have excused them.
If You Want to Contest the Ticket
Because a seat belt citation is an infraction, the stakes of fighting it are modest. A few defenses still work.
The cleanest is a qualifying exemption. Physician documentation of a medical condition that prevents seat belt use, or any of the other categories in IC 9-19-10-1, should get the citation dismissed once you present the evidence.2Indiana General Assembly. Indiana Code Title 9 Motor Vehicles 9-19-10-1 – Exemption From Safety Belt Requirement The medical proof does not have to be a prescription. A written statement from a licensed physician explaining the condition is enough.
If the vehicle was never originally equipped with manufacturer-installed seat belts meeting federal standards, the law doesn’t apply to it in the first place. Bringing the title and specifications showing the manufacture date and original equipment can resolve the citation quickly.1Indiana General Assembly. Indiana Code 9-19-10-2 – Use of Safety Belt by Motor Vehicle Occupants; Safety Belt Standards