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On this page
  1. The statute
  2. What 3 feet means on a real street
  3. Passing in a no-passing zone
  4. Reckless close driving
  5. Chicago’s version and fines
  6. Related rules

Illinois 3-Foot Passing Law for Bicycles: The Rule, Fines and Exceptions

Illinois drivers must leave at least 3 feet when passing a bicycle. The statute, Chicago's $150 and $500 fines, and the no-passing-zone exception.

Checked 2026-10-19 against Illinois General Assembly (ilga.gov)Sources: 7By Chicago Bike Station editors
Short answer

Illinois drivers must leave a safe distance of not less than 3 feet when passing a bicycle and hold it until they are safely past1. Chicago's code repeats the rule and fines a violation $150, or $500 if it causes a collision with a bicycle2,3. Reckless close driving near a bicyclist is a Class A misdemeanor, or a Class 3 felony if it causes great bodily harm1.

At a glance
Minimum gap
Not less than 3 feet, held until safely past1
State law
625 ILCS 5/11-703(d)1
Chicago law
Municipal Code 9-36-010(c)2
Chicago fine
$150; $500 if it causes a collision with a bicycle3
No-passing zone
Allowed only on three conditions, including a bicycle under half the posted limit1
Reckless close driving
Class A misdemeanor; Class 3 felony with great bodily harm1
On this page
  1. The statute
  2. What 3 feet means on a real street
  3. Passing in a no-passing zone
  4. Reckless close driving
  5. Chicago’s version and fines
  6. Related rules
A CDOT notice on a pole telling drivers to leave at least 3 feet when overtaking people on bikes
City notice for the Milwaukee Avenue dashed bike lane pilot.

Three feet is the number every Illinois driver should know. It sits in the state’s passing statute and again in Chicago’s municipal code, and the city attaches fines that rise when a crash follows.

The statute

Section 11-703(d) of the Illinois Vehicle Code governs passing a bicycle. The operator of a motor vehicle overtaking a bicycle or individual proceeding in the same direction on a highway shall, among other duties1:

leave a safe distance, but not less than 3 feet, when passing the bicycle or individual and shall maintain that distance until safely past the overtaken bicycle or individual1

The same paragraph tells drivers to change lanes first when another lane going the same way is available, if that is practicable, safe and legal1. The state last amended section 11-703 through Public Act 104-260, effective August 15, 20251.

What 3 feet means on a real street

The Secretary of State’s guide does the arithmetic. Most lanes are under 14 feet wide, too narrow to pass a bicycle legally within the same lane. Drivers usually have to merge at least partly into the next lane, and the guide says to wait until it is safe5. More space is better, especially at higher speeds5.

Riders sometimes leave the curb for a reason. State law lets a rider leave the right edge to avoid hazards and “substandard width” lanes, which are lanes too narrow for a bicycle and a vehicle to travel side by side6. Chicago’s rule is the same7.

Passing in a no-passing zone

A no-passing zone does not always bar passing a bicycle. A driver may pass a bicycle in a no-passing zone, still subject to the 3-foot rule, only when all three conditions are met1,5:

  • The bicycle is traveling at less than half of the posted speed limit1.
  • The driver can pass without exceeding the posted speed limit1.
  • There is sufficient distance ahead on the left to pass safely5.

Reckless close driving

Separate from the 3-foot rule, the statute bars driving a motor vehicle in a reckless manner unnecessarily close to, toward or near a bicyclist, a pedestrian, or a person riding a horse1. The penalty depends on the harm. It is a Class A misdemeanor if the violation does not result in great bodily harm or permanent disability or disfigurement. If it does, it is a Class 3 felony1.

Chicago’s version and fines

Chicago’s Municipal Code section 9-36-010(c) repeats the 3-foot rule in the same words, held until safely past2. The fines come from the code’s bicycle safety penalty section3:

Violation Fine per offense
Passing a bicycle closer than 3 feet $1503
Same violation, if it causes a collision with a bicycle $5003

The City’s tip sheet for drivers puts it plainly: leave at least three feet of space when passing a cyclist4. The sheet cites 9-36-010(c) for the rule4.

Doors are a separate rule with their own fines. Read the dooring law. The full rider side is on the Chicago bike laws page, and the rules and safety hub links the rest, including riding two abreast.

laws

Chicago Bike Laws: What Every Rider Must Know

Chicago and Illinois bike laws in one page: where to ride, lights, hand signals, phones, passing distance, e-bikes and the fines that apply.

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Chicago Dooring Law: The Rule, the Fines and How to Avoid It

Opening a car door into a cyclist is illegal in Chicago and Illinois. The ordinance, the $300 and $1,000 fines, the 4-foot door zone and the Dutch Reach.

laws

Riding Two Abreast in Illinois and Chicago: The Rule

Illinois allows two cyclists abreast if they do not impede traffic; Chicago makes single file the default. The statute, the ordinance and the exceptions.

Questions people ask

What is the minimum passing distance when passing a bicycle in Illinois?

Not less than 3 feet. The statute says a motorist overtaking a bicycle must leave a safe distance, but not less than 3 feet, and maintain it until safely past the bicycle1. Chicago's ordinance uses the same wording2.

What is the fine for passing a bicycle too closely in Chicago?

$150 for each offense, rising to $500 when the violation causes a collision between a motor vehicle and a bicycle3. A city tip sheet for drivers says passing cyclists too closely is dangerous and illegal and can bring a fine4.

Can a driver cross into a no-passing zone to pass a bicycle?

Sometimes. Illinois allows it only when the bicycle is traveling at less than half the posted speed limit, the driver can pass without exceeding the limit, and there is enough clear distance to the left, all while still leaving 3 feet1,5.

What if the lane is too narrow to pass with 3 feet?

Then the driver must move over. The Secretary of State's guide says most lanes are too narrow, under 14 feet, to legally pass a bicycle within the same lane, so drivers usually merge at least partly into the next lane5.

Sources

  1. 625 ILCS 5/11-703, Overtaking a vehicle on the leftGOV
    Illinois General Assembly (ilga.gov) · ilga.gov · checked 2026-10-19
  2. Chicago Municipal Code 9-36-010, Overtaking on the leftGOV
    City of Chicago, Municipal Code (American Legal Publishing) · codelibrary.amlegal.com · checked 2026-10-19
  3. Chicago Municipal Code 9-4-025, Bicycle safety violation - PenaltyGOV
    City of Chicago, Municipal Code (American Legal Publishing) · codelibrary.amlegal.com · checked 2026-10-19
  4. Avoid Crashes: Know What to Look For (CDOT tip sheet for motorists, PDF)GOV
    City of Chicago, CDOT (chicago.gov) · chicago.gov · checked 2026-10-19
  5. Illinois Bicycle Rules of the Road (Illinois Secretary of State, PDF via Wayback)GOV
    Illinois Secretary of State (ilsos.gov) · ilsos.gov · checked 2026-10-19
  6. 625 ILCS 5/11-1505, Position of bicycles on roadwaysGOV
    Illinois General Assembly (ilga.gov) · ilga.gov · checked 2026-10-19
  7. Chicago Municipal Code 9-52-040, Yielding right-of-wayGOV
    City of Chicago, Municipal Code (American Legal Publishing) · codelibrary.amlegal.com · checked 2026-10-19
Photo credits (1)
  • Eric Fischer / Wikimedia Commons · CC BY 2.0 · source

Laws are quoted from Illinois statute and the Chicago Municipal Code; prices from each operator on the date shown. Editorial policy · Corrections.