Under the Illinois motorcycle helmet law, you do not have to wear a helmet, but you do have to protect your eyes. If you are hurt while riding without one, Illinois courts have generally refused to let the other side use that to blame you for the crash.
But this is the tricky part: an insurance adjuster can still bring up your helmet. Knowing what the law says, and what the courts have said, helps you respond when it comes up.
Does Illinois Require Motorcycle Helmets? No, but Eye Protection Is Mandatory
Illinois does not require any rider or passenger to wear a helmet. The Insurance Institute for Highway Safety lists Illinois as one of only three states with no motorcycle helmet law, alongside Iowa and New Hampshire.
The state once tried. In 1969, the Illinois Supreme Court struck down a headgear requirement in People v. Fries, ruling that the law went beyond the state's authority. No statewide helmet mandate has taken its place. The Illinois motorcycle helmet law remains one of the least restrictive in the country.
Eye protection is a different story, though.
Under 625 ILCS 5/11-1404, you and every passenger must have one of the following:
| Acceptable eye protection | Notes |
|---|---|
| Glasses | Ordinary or protective eyewear |
| Goggles | Must protect the eyes |
| Transparent face shield | Often part of a helmet |
| Windshield | Must extend above the rider's eyes |
Contact lenses do not count. If your windshield sits below eye level, you still need glasses or goggles.
Motorcycle Accident Claim Without a Helmet: Can It Hurt Your Case?
In an Illinois courtroom, generally no. The Illinois motorcycle helmet law makes riding without a helmet legal, and courts have been reluctant to treat a legal choice as your fault.
That does not mean a discussion on wearing helmets never comes up. A motorcycle accident claim without a helmet can still draw questions from insurers in Oak Lawn, Cook County, and across the state.
The most common instance is an adjuster using it to push for a lower offer, and a defense lawyer may try to raise it at trial. The Illinois cases below speak to both.
Can an Insurer Use It Against You? What Illinois Courts Have Said About the "Helmet Defense"
These Illinois decisions are older, but they point the same way. The table below lists the three cases that have made the biggest impact:
| Case | What it means |
|---|---|
| Clarkson v. Wright (Ill. 1985) | A jury could not be told that the injured person skipped a seat belt, either to decide who was at fault or to reduce the payout. |
| Hukill v. DiGregorio (Ill. App.) | The court upheld keeping out evidence that a motorcyclist wore no helmet, and rejected the "helmet defense." |
| Moore v. Swoboda (Ill. App. 1991) | Not wearing a helmet could not be used to argue the rider was partly to blame. |
The reasoning is simple. In Clarkson, the Supreme Court said a person has no duty to plan ahead for another driver's mistakes. Illinois appellate courts then applied the same logic to helmets.
Moore adds a useful point. When an injury is not to the head, the helmet is irrelevant. A broken leg has nothing to do with whether you wore one.
Why is this important? Because courts can revisit old rulings, and no guide can tell you how a particular judge will rule your case today.
How Fault Is Split After a Crash: Comparative Negligence and Motorcycle Helmets in Illinois
After a crash, Illinois splits the blame in percentages. That is called comparative negligence, and it is where a motorcycle helmet dispute in Illinois plays out.
Under 735 ILCS 5/2-1116, you cannot recover anything if you are found more than 50% at fault. If you are 50% or less at fault, your payout is reduced by your percentage. For example, a jury that finds you 20% at fault would reduce a $100,000 claim to $80,000.
This is where the helmet question comes in. Fault is based on how you rode: speed, lane position, signaling, and following distance are all fair game. A legal choice about headgear is not.
This is where claims are often won or lost. The other driver's insurer wants to push your percentage up, because every point of fault comes off what you recover. Our firm's overview of how motorcycle claims differ from car claims in Illinois explains why riders face this pressure more often than drivers do.
Helmet Use and Injury Claims in Illinois: What Your Claim Mostly Depends On
A claim is built on evidence, not on headgear. The strongest cases in Chicago and Cook County rest on four things:
Proof of lost income and ongoing care costs.
Witness statements and any available video.
Medical records that link each injury to the crash.
Police and crash reports that describe how the collision happened.
A head injury is the one place where a helmet argument stands to have a more reasonable argument.
Even there, Illinois courts have kept the evidence out. If you hurt your arms, legs, back, or ribs, your helmet has no bearing on the facts.
Why Insurers Still Bring Up Your Helmet (And How to Respond)
An adjuster does not need a court ruling to make a helmet argument sound convincing. A lower offer costs the insurer nothing to propose.
There is also an honest point in the insurer's favor. The National Highway Traffic Safety Administration estimates that helmets are 37 percent effective in preventing rider deaths.
Wearing one is the safer choice, ultimately.
Safety, however, is not the same as legal fault. When an insurer cites your helmet, three steps generally help:
Document your injuries and treatment from day one.
Ask which Illinois statute or court decision supports the reduction.
Keep the focus on how the crash happened, not on what you wore.
Hiring a motorcycle accident lawyer can also help with cases like these. From gathering documents to filing accident claims and fighting against insurers that propose lowball offers.
For a fuller picture of what a claim can include, see our guide to compensation after a motorcycle accident in Illinois). If the crash has just happened, our post on what to do after a motorcycle accident in Chicagoland lays out the first steps.
Helmet Law and Motorcycle Claim FAQs
How long do I have to file a motorcycle accident claim in Illinois?
Most personal injury lawsuits must be filed within two years of the date you were injured. Exceptions exist, so confirm your own deadline with an attorney.
What if my helmet failed in the crash?
If your helmet failed in the crash, you may have a separate product claim against the manufacturer, in addition to your claim against the other driver.
Talk to an Illinois Motorcycle Accident Lawyer in Oak Lawn
If you were hurt in a crash anywhere in Cook County or the Chicago area, riding without a helmet should not keep you from getting help. Our Illinois motorcycle accident lawyers at the Oak Lawn office can review your case, explain how Illinois law applies, and handle the insurer for you. Our personal injury practice also covers related claims, and our case results show the outcomes we have secured.
Call (708) 424-2121 or contact us online for a consultation today.