Is Lane Splitting Legal in Illinois? What the Vehicle Code Says

Last reviewed: October 18, 2026. This article is general information, not legal advice. Illinois traffic rules can be amended; check the current Illinois Compiled Statutes before you ride.

Stuck on the Kennedy or the Dan Ryan in July, with the engine heat rising, every rider has looked at that gap between the lanes. Before you take it, here is what Illinois law actually says, and what it doesn't. For other states, see our guide to what states lane splitting is legal in.

Short answer: Is lane splitting legal in Illinois? No. Illinois does not use the words "lane splitting," but 625 ILCS 5/11-703(c) says a 2-wheeled vehicle may not pass another vehicle on the right unless there is an unobstructed lane available. Riding between two rows of cars, moving or stopped, does not meet that test. Lane filtering at red lights is not allowed either. A ticket is normally a petty offense with a fine, not the misdemeanor some websites claim.

How 11-703(c) works

Section 11-703 is Illinois's general passing rule. Subsection (c) is aimed at motorcycles, scooters and other 2-wheeled vehicles. Picture yourself riding between two lines of cars: you are passing the car on your right on its left, and passing the car on your left on its right, at the same time. Subsection (c) says you can't do that unless there is "an unobstructed lane of traffic available." The gap between two occupied lanes is not an unobstructed lane.

Section 11-709(a) backs this up. On any road divided into two or more marked lanes, every vehicle must stay "as nearly as practicable entirely within a single lane." Riding on the lane line is, by definition, not within a single lane.

Splitting, filtering and lane sharing in Illinois

The Illinois Motorcycle Operator Manual, published by the Secretary of State, explains why: "Automobiles and motorcycles need a full lane to operate safely. Lane sharing is usually prohibited. Riding between rows of stopped or moving cars in the same lane can leave you vulnerable to the unexpected. A hand could come out of a window; a door could open; a car could turn suddenly."

The penalty: correcting a common myth

Many websites say lane splitting in Illinois is a Class A misdemeanor, or even a felony. That is a misreading of the statute.

Section 11-703(f) reads: "Every person convicted of paragraph (e) of this Section shall be guilty of a Class A misdemeanor..." Subsection (e) is about driving "in a reckless manner" unnecessarily close to a bicyclist, pedestrian or horse rider. It is not the motorcycle passing rule in subsection (c).

For a violation of subsection (c), no specific penalty is written into 11-703, so the Vehicle Code's catch-all applies. 625 ILCS 5/16-104 says a person convicted of a violation "for which another penalty is not provided shall, for a first or second conviction thereof, be guilty of a petty offense and, for a third or subsequent conviction within one year after the first conviction, be guilty of a Class C misdemeanor."

What that means in practice:

• First or second ticket: a petty offense. Under 730 ILCS 5/5-4.5-75, the minimum fine is $75 and the maximum is $1,000 per offense, unless another law sets a different amount. Court costs are added and vary by county.
• Third conviction within a year: a Class C misdemeanor, which is a criminal offense.
• Dangerous riding: if the way you weave through traffic endangers people, police can charge other, more serious offenses, such as reckless driving.

After a crash, riding between lanes can hurt you more than the fine. The other side can argue you broke the passing rules, which can reduce what you recover. If you have been injured, see our guide to choosing a motorcycle injury lawyer.

Is Illinois changing the law?

In our searches of news reports and public bill trackers, we found no pending Illinois bill in 2025 or 2026 that would legalize lane splitting or filtering. We could not open the Illinois General Assembly's site to confirm directly, so check the Illinois General Assembly website (ilga.gov) for any new bill before relying on this. Until a bill passes both houses, is signed and takes effect, the current rules apply.

Riding Illinois traffic safely and legally

The Secretary of State's manual recommends using lane position to keep yourself visible and to stop others crowding you:

• Ride in the part of the lane that keeps you seen. The manual notes that the center portion of the lane is usually the best place to be seen by drivers ahead and to prevent lane sharing by others.
• Discourage drivers from squeezing past you. The manual lists the times drivers are most tempted: heavy bumper-to-bumper traffic, when they want to pass you, when you are preparing to turn, and when you are moving into an exit lane.
• Pass only in an open lane, as a car would.
• In stopped traffic, leave room ahead and keep an eye on your mirrors for vehicles approaching too fast.

How Illinois compares

Illinois is one of the many states that do not allow riding between lanes. Neighboring Missouri has no express ban but reaches a similar result through its lane and passing rules, and Michigan bans passing between lines of traffic outright. California is the one state that expressly allows lane splitting. Our state-by-state lane splitting guide has the full picture.

Sources

• 625 ILCS 5/11-703, Overtaking a vehicle on the left (FindLaw copy, current as of January 1, 2025)
• 625 ILCS 5/11-709, Driving on roadways laned for traffic (FindLaw copy, current as of January 1, 2025)
• 625 ILCS 5/16-104, Penalties (FindLaw copy, current as of January 1, 2025)
• 730 ILCS 5/5-4.5-75, Petty offenses; sentence (FindLaw copy, current as of January 1, 2025)
• Illinois Motorcycle Operator Manual (Illinois Secretary of State, archived copy, July 2025)