Under the Indiana motorcycle helmet law, only two groups must wear a helmet: riders under 18 and anyone riding on a motorcycle learner’s permit. Adults 18 or older who hold a full motorcycle endorsement can legally ride bareheaded. The two requirements come from separate statutes, and the consequences of ignoring them reach beyond the traffic fine itself.
Who Has to Wear One
The first rule covers age. Anyone under 18 operating or riding as a passenger on a motorcycle on public roads must wear a DOT-approved helmet along with protective eyewear.1Indiana General Assembly. Indiana Code 9-19-7-1 – Minors; Protective Headgear and Face Shields; Exception for Autocycles
The second rule covers licensing status. Anyone riding on a motorcycle learner’s permit must wear a DOT-approved helmet, no matter their age.2Indiana General Assembly. Indiana Code Title 9 Motor Vehicles 9-24-8-3 A 30-year-old with a permit needs a helmet; that same rider, once endorsed, does not.
Every other adult rider — someone 18 or older holding a full motorcycle endorsement — has no legal helmet obligation in Indiana.3State of Indiana. Does Indiana Require Motorcycle Riders to Use a Helmet?
What Counts as a Legal Helmet
Both statutes require a helmet that meets the federal motorcycle helmet standard, FMVSS 218, found at 49 CFR 571.218. A helmet passes that standard by clearing three tests: impact absorption (the liner keeps peak acceleration below 400g), penetration resistance (a pointed striker cannot punch through the shell), and retention strength (the chin strap holds under load).4eCFR. 49 CFR 571.218 – Standard No. 218; Motorcycle Helmets
You can check compliance by looking for the certification label. Manufacturers must permanently mark each helmet with the “DOT” symbol, the manufacturer’s name, the helmet size, and the month and year of manufacture.4eCFR. 49 CFR 571.218 – Standard No. 218; Motorcycle Helmets Novelty helmets sold at rallies often skip the protective liner entirely, and they either lack the label or carry a fake one. If the helmet on your head doesn’t bear the required markings, it doesn’t satisfy the law even though you’re technically wearing something.
Eyewear for Riders Under 18
Minors owe more than a helmet. Riders under 18 must also wear protective glasses, goggles, or a transparent face shield.1Indiana General Assembly. Indiana Code 9-19-7-1 – Minors; Protective Headgear and Face Shields; Exception for Autocycles The statute does not exempt bikes with windshields. A full-face helmet with a built-in shield covers both the helmet rule and the eyewear rule.
Indiana imposes no statewide eyewear mandate on adult riders with a full endorsement.
Autocycles Are Not Covered
The under-18 helmet statute carves out an exception for autocycles: three-wheeled enclosed vehicles with a steering wheel, roof, windshield, and seat belts.1Indiana General Assembly. Indiana Code 9-19-7-1 – Minors; Protective Headgear and Face Shields; Exception for Autocycles Neither helmet nor eyewear rules apply to an autocycle occupant, regardless of age.
What a Violation Costs
A helmet violation is a Class C infraction. The maximum judgment is $500, but Indiana’s infraction statute steps that number down for early resolution and a clean record.5Indiana General Assembly. Indiana Code Title 34 Civil Law and Procedure 34-28-5-4
- Admit the violation before the court date, or admit or plead no contest at the hearing: the judgment cannot exceed $35.50 plus court costs.
- Contest and lose with no other moving violations in the same county in the past five years: $35.50.
- Contest and lose with one prior moving violation in that window: $250.50.
- Contest and lose with two or more prior moving violations in that window: up to the full $500.5Indiana General Assembly. Indiana Code Title 34 Civil Law and Procedure 34-28-5-4
A moving violation on your record can also raise insurance premiums, since insurers price rates off driving history.
The Insurance and Injury Claim Angle
The bigger financial risk of riding without a required helmet shows up after a crash. Indiana uses a modified comparative fault system: any share of fault assigned to you as the injured party cuts your recovery by that percentage, and a fault share above 50 percent bars recovery entirely.6Indiana General Assembly. Indiana Code 34-51-2-5 – Effect of Contributory Fault7Indiana General Assembly. Indiana Code 34-51-2-6 – Barring of Recovery; Degree of Fault
If another driver caused the crash but your head injuries were worsened by riding bareheaded, defense counsel will almost certainly argue that choice contributed to the severity of the harm. A jury that finds you 20 percent responsible for your own injuries reduces your award by 20 percent. This argument can surface even when the law didn’t require you to wear a helmet, because the comparative fault analysis looks at all conduct contributing to the injury, not only statutory violations. Wearing a helmet takes the argument off the table.
Fighting a Helmet Citation
Most helmet stops are simple observations, but a few defenses can work.
The most direct is proving the helmet was compliant. If an officer wrote the ticket because the helmet looked like a novelty shell, bring it to court with the DOT label, manufacturer marking, and size and manufacture-date stamp visible.
The second is challenging the basis for the stop. An officer needs reasonable suspicion of a violation to pull you over. Age is hard to judge from a passing motorcycle, so if you’re plainly an adult with a full endorsement and the officer’s stated reason for the stop was the missing helmet alone, the stop’s legal footing is worth examining. If the officer had any other lawful reason — a broken taillight, an expired plate, speeding — anything observed during that stop remains fair game.