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What Should Motorcyclists Know About Lane Splitting Laws in IL?

Published on: May 18, 2026
Michael Agruss

Written and Reviewed by Michael Agruss

  • Managing Partner and Personal Injury Lawyer at 844SeeMike Personal Injury Lawyers.
  • Over 20 years of experience in Personal Injury.
  • Graduated from the University of Illinois Chicago School of Law: Juris Doctor (2004).

What Illinois Motorcyclists Need to Know About Lane Splitting

Riding a motorcycle in Illinois comes with a unique set of rules every rider should understand before hitting the road. One commonly misunderstood topic is lane splitting, riding a motorcycle between two lanes of same-direction traffic. In Illinois, lane splitting is not authorized under the state’s Vehicle Code, meaning motorcyclists who ride between lanes risk traffic violations and serious complications if involved in a crash. Understanding these laws can protect both your safety and legal rights after an accident.

If you have been injured in a motorcycle crash and have questions about how Illinois traffic laws may affect your claim, 844SeeMike (PI) can help you understand your options. Call 312-786-4442 or reach out online to discuss your case today .

helmeted rider on classic cruiser motorcycle navigating curved open road

Why Lane Splitting Is Illegal in IL

Illinois does not have a statute that expressly authorizes motorcyclists to ride between lanes of same-direction traffic. The relevant law, 625 ILCS 5/11-703, governs how all vehicles, including motorcycles, must overtake and pass other vehicles. Under Section 11-703(a), a driver overtaking another vehicle proceeding in the same direction must pass to the left at a safe distance and may not return to the right lane until safely clear.

Section 11-703(c) adds a restriction applying only to two-wheeled vehicles. It states that the driver of a two-wheeled vehicle may not, while passing on the left of a same-direction vehicle, simultaneously pass on the right of another same-direction vehicle unless an unobstructed lane is available. Because lane splitting involves threading between vehicles occupying adjacent lanes, it falls outside what this statute permits.

This prohibition applies statewide, not just in urban areas. Whether you are on Lake Shore Drive, Interstate 55, or a rural two-lane road, the same Illinois Vehicle Code governs your conduct. Local municipalities cannot create motorcycle regulations that conflict with the state Vehicle Code, per Section 11-208(e).

💡 Pro Tip: Lane splitting and lane sharing are two different things. Lane sharing, where two motorcycles ride side by side in the same lane, is expressly permitted under Illinois law (625 ILCS 5/11-703); the Illinois Motorcycle Operator Manual nonetheless advises riders to use a full lane and not to “pair up” or operate directly alongside another rider as a safety recommendation. Do not confuse the two when evaluating your rights on the road.

Penalties and Legal Consequences for Lane Splitting in Illinois

Violating Illinois traffic laws, including the overtaking rules in Section 11-703, carries real consequences. While Section 11-202 of the Illinois Vehicle Code provides a general penalty for many Chapter 11 violations, Section 11-703 contains its own specific penalties only in subsection (e). The general overtaking and passing provisions in 625 ILCS 5/11-703(a)-(c), the provisions relevant to lane splitting, are not assigned a specific penalty within 11-703 and therefore fall under the general petty offense provision in Section 11-202. The Class A misdemeanor penalty referenced in 11-703(f) applies only to violations of subsection (e) concerning recklessly driving too close to vulnerable road users; if a violation of subsection (e) results in great bodily harm or permanent disability or disfigurement, that violation can escalate to a Class 3 felony. Illinois does not use a “Class C felony” classification.

Lane-splitting-related violations under Section 11-703(a)-(c) are treated as petty offenses under the general penalty provision in Section 11-202, not as Class A misdemeanors. Legal consequences can escalate in limited circumstances under subsection (e) of 11-703, but that subsection addresses recklessly driving too close to vulnerable road users, not ordinary overtaking/passing. If a subsection (e) violation results in great bodily harm or permanent disability or disfigurement, the offense can escalate to a Class 3 felony.

  • A conviction for a violation can appear on your record and affect insurance rates.

  • If lane splitting causes or contributes to a collision, you may face additional liability in a civil lawsuit.

  • Repeated violations may lead to license suspension or other administrative penalties.

💡 Pro Tip: Even a citation or criminal charge for lane splitting could be used as evidence against you in a personal injury claim. Preserve all documentation and consult with a motorcycle injury lawyer in IL before making statements to insurance adjusters.

How Lane Splitting Affects a Motorcycle Accident Claim in IL

If you were lane splitting at the time of a crash, the other driver’s insurance company will almost certainly use that fact against you. Illinois follows a modified comparative negligence system under 735 ILCS 5/2-1116, meaning a motorcyclist found partially at fault can still recover damages, but only if their fault is not more than 50%. If your fault exceeds that threshold, you may be barred from recovering compensation entirely.

This does not mean a lane-splitting motorcyclist automatically loses their claim. The at-fault driver may still bear significant responsibility. For instance, if a car driver made an unsafe lane change without signaling and struck a motorcyclist, the car driver’s negligence could outweigh the motorcyclist’s traffic violation. Courts examine the totality of circumstances, and fault allocation is often fact-intensive. You can review how comparative negligence laws work across the country.

Working with an experienced motorcycle accident attorney is critical. An attorney can investigate the crash, gather evidence of the other driver’s negligence, and present arguments to minimize any fault attributed to you. Insurers often try to shift blame onto the motorcyclist, so strong legal representation can make a meaningful difference.

💡 Pro Tip: After any motorcycle crash, document everything you can at the scene. Photographs of road conditions, vehicle positions, traffic signals, and visible injuries can all support your case, especially if the insurance company argues that lane splitting caused the accident.

Understanding Fault Allocation in Motorcycle Cases

Illinois courts consider multiple factors when dividing fault between parties in a motorcycle collision. These factors may include each driver’s speed, lane position, use of turn signals, sobriety, and compliance with traffic laws. A motorcyclist’s decision to lane split is one factor, but does not automatically make the rider majority at-fault.

Factor

How It May Affect Fault

Lane splitting by motorcyclist

May increase rider’s percentage of fault

Failure to signal by car driver

May increase car driver’s fault

Speeding by either party

Can shift fault toward the speeding party

Distracted driving (e.g., phone use)

Strong evidence of negligence by that driver

Road conditions or visibility

Courts may consider environmental factors

The Real Safety Risks Behind Lane Splitting Laws

Lane splitting restrictions exist for a reason: motorcyclists face significantly higher crash risks than other motorists. According to NHTSA’s motorcycle safety data, motorcyclists are overrepresented in fatal traffic crashes. In 2023, there were 6,335 motorcyclists killed in the United States, representing 15% of all traffic fatalities and marking the highest number since at least 1975.

Per mile traveled, motorcyclist deaths in the U.S. are nearly 28 times the number of deaths among car occupants. Lane splitting places riders in close proximity to vehicles that may not see them, and even a minor miscalculation can result in catastrophic injuries.

Why Other Drivers May Not See You

Motorcycles occupy a smaller visual profile than cars and trucks, making them easier to overlook in mirrors and blind spots. When a rider is moving between lanes, the risk of a driver failing to notice them increases substantially. Drivers changing lanes, merging, or drifting may not anticipate a motorcycle passing alongside.

💡 Pro Tip: Even in states where lane splitting is legal, safety organizations recommend doing so only in slow-moving traffic and at speeds no more than 10 mph faster than surrounding vehicles. In Illinois, because the practice is not authorized, the safest approach is to avoid it altogether.

How a Motorcycle Accident Attorney Can Protect Your Rights

After a motorcycle crash in Illinois, the steps you take in the first days and weeks can shape the entire trajectory of your case. An experienced motorcycle accident attorney in IL can help you navigate the claims process, deal with insurance adjusters, and build a strong case for compensation. This includes gathering police reports, medical records, witness statements, and traffic camera footage.

Insurance companies frequently argue that motorcyclists assumed the risk of riding or contributed to the crash. If lane splitting is part of the narrative, the insurer may push hard to attribute a large share of fault to you. A knowledgeable attorney can counter these arguments by demonstrating the other driver’s negligence.

What Compensation May Be Available

Injured motorcyclists may be entitled to recover damages for a range of losses. These can include:

  • Medical expenses, including emergency care, surgeries, rehabilitation, and ongoing treatment

  • Lost wages and diminished earning capacity

  • Pain, suffering, and emotional distress

  • Property damage to the motorcycle and riding gear

💡 Pro Tip: Keep detailed records of every medical appointment, prescription, and out-of-pocket expense. Thorough documentation strengthens your motorcycle accident claim in IL and helps your attorney calculate the full value of your damages.

Frequently Asked Questions

1. Is lane splitting legal anywhere in Illinois?

No, lane splitting is not authorized anywhere in Illinois. The prohibition under 625 ILCS 5/11-703 applies statewide. No local government can enact ordinances that conflict with the state Vehicle Code on this issue. You can learn more about lane splitting in Illinois and how it may impact your situation.

2. Can I still file an injury claim if I was lane splitting when the accident happened?

You may still recover compensation, but your potential recovery could be reduced. Under Illinois’s modified comparative negligence system, you can pursue a claim as long as your fault does not exceed 50%. The court would weigh your lane splitting against the other driver’s negligent conduct.

3. What is the difference between lane splitting and lane sharing?

Lane splitting involves riding between two lanes of traffic, while lane sharing means two motorcycles ride side by side in the same lane. Lane sharing is expressly permitted in Illinois (625 ILCS 5/11-703); the Illinois Motorcycle Operator Manual advises riders to use a full lane and not to ride directly alongside another rider as a safety recommendation.

4. What should I do immediately after a motorcycle accident in Illinois?

Seek medical attention first, even if your injuries seem minor. Then, if possible, document the scene with photos, exchange information with the other driver, and obtain witness contact details. Avoid giving recorded statements to the other driver’s insurance company before speaking with an attorney.

5. How does Illinois’s comparative negligence rule work in motorcycle cases?

Illinois applies a modified comparative negligence standard under 735 ILCS 5/2-1116. You can recover damages as long as you are not more than 50% at fault. If you are found 30% at fault, your total compensation would be reduced by 30%. If your fault exceeds 50%, you are barred from recovering anything.

Protect Your Rights After a Motorcycle Crash in Illinois

Lane splitting laws in Illinois are clear: the practice is not authorized, and engaging in it creates significant legal and safety risks. However, even if you were lane splitting at the time of a crash, you may still have a viable injury claim if another driver’s negligence contributed to the collision. Understanding how Illinois traffic laws and comparative negligence rules interact is essential for protecting your rights.

Do not let an insurance company take advantage of the situation. Contact 844SeeMike (PI) to speak with a trusted motorcycle accident attorney who can evaluate your case and fight for full compensation. Call 312-786-4442 or get in touch online to get started today.

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