Indiana requires motorcycle helmets only for riders and passengers under 18 and for anyone operating on a motorcycle learner’s permit. Fully endorsed riders 18 and older may legally ride without a helmet in Indiana. Riders under 18 must also wear protective eyewear — glasses, goggles, or a face shield.
That’s the law in two sentences. The more interesting questions are what the law means in practice — for your safety, and for your injury claim if a driver takes you down.
What the Law Actually Requires
Indiana’s requirement, found in Indiana Code § 9-19-10.5, comes down to three groups:
- Under 18 (operator or passenger): helmet and protective eyewear required.
- Learner’s permit holders (any age): helmet required while operating on the permit.
- Endorsed riders 18+: no helmet requirement.
There is no requirement that adult riders carry extra insurance or sign anything to ride helmet-free, and there is no separate eyewear rule for endorsed adults.
The Safety Math Hasn’t Changed
Whatever the law allows, the physics are settled: helmets reduce the risk of traumatic brain injury in a crash by as much as 69%, and they save lives. We represent riders — we’re not going to lecture anyone about a freedom Indiana law explicitly grants. But the gap between what’s legal and what’s survivable is worth knowing before you leave the driveway.
Helmets and Your Injury Claim: The Part Insurers Don’t Explain
Here’s where the helmet law meets personal injury law. Indiana applies modified comparative fault: your compensation is reduced by any share of fault assigned to you. After a crash, some insurers argue that an unhelmeted rider is partly responsible for their own head injuries — even though riding without a helmet is perfectly legal for adults.
That argument is beatable, and the counterpoints matter:
- Legal conduct isn’t automatic negligence. Indiana chose not to require adult helmet use; exercising that choice is not carelessness in itself.
- The helmet has nothing to do with most injuries. Road rash, fractures, spinal damage, internal injuries — a helmet wouldn’t have changed them, so it can’t discount them.
- Causation is the insurer’s burden to prove, not assert. Vague “it would have been less severe” claims don’t survive scrutiny without expert support.
If an adjuster raises your helmet before discussing the driver who caused the crash, that tells you how they intend to value your claim. Our Indiana motorcycle accident lawyers deal with that playbook regularly.
Related Rules Riders Ask About
- Full lane use: Indiana law entitles motorcycles to the entire width of a traffic lane. Drivers who crowd or share a rider’s lane are in the wrong.
- Lane splitting: not permitted in Indiana.
- Two abreast: two motorcycles may share a lane side-by-side by mutual choice — a car may not join them.
This page is general information about Indiana law, not legal advice. If a driver injured you while riding, our motorcycle accident attorneys offer free consultations at 219-762-9538. (See our full disclaimer.)
Frequently Asked Questions
Does Indiana require motorcycle helmets?
Only for some riders. Indiana law requires riders and passengers under 18 to wear a helmet (with protective eyewear), and helmet use is also required while operating on a motorcycle learner's permit. Riders 18 and older with a full motorcycle endorsement are not legally required to wear a helmet in Indiana.
Do motorcycle passengers have to wear helmets in Indiana?
The same age rule applies to passengers: anyone under 18 riding as a passenger must wear a helmet and protective eyewear. Adult passengers are not required to wear one - though the safety case for doing so is the same as for operators.
Can not wearing a helmet reduce my injury settlement?
It should not - riding without a helmet is legal for adults in Indiana and is not negligence by itself. In practice, insurers sometimes argue an unhelmeted rider's head injuries would have been less severe, trying to shave the claim under comparative fault. That argument has real weaknesses (it has no bearing on injuries to the rest of your body, for one), and an experienced motorcycle attorney knows how to push back on it.
Does Indiana require eye protection for riders?
Riders under 18 and learner's-permit holders must wear protective glasses, goggles, or a transparent face shield. For fully endorsed adult riders Indiana law does not mandate eye protection, though windshield-less riding without it is a bad idea for obvious reasons.
Is lane splitting legal in Indiana?
No. Riding between lanes of slow or stopped traffic is not permitted in Indiana. At the same time, the law entitles a motorcycle to the full use of its traffic lane - a driver who crowds a rider out of a lane or shares it uninvited is the one violating the rules of the road.
What helmet standard should I look for?
A DOT-compliant helmet (FMVSS 218 standard) is the baseline - look for the DOT symbol on the back. Helmets meeting Snell or ECE standards exceed it. Fit matters as much as certification: a loose helmet performs poorly in exactly the crash it was bought for.