Chicago Bike Laws: What Every Rider Must Know

Chicago does not run a separate rulebook for bicycles. It folds riders into the traffic code and then adds a short chapter of its own. Learn both and you know the rules a police officer, a judge and an insurance adjuster will apply.

A bicycle is a vehicle

The city’s rule is one sentence, and everything else follows from it:

Every bicyclist upon a roadway shall be granted all of the rights and shall be subject to all of the duties applicable to the driver of a vehicle¹

Illinois says the same in the Vehicle Code: a person riding a bicycle on a highway is subject to “all of the duties applicable to the driver of a vehicle”⁹. Chicago’s traffic code applies to bicycles on any roadway, public sidewalk or public path set aside for bicycles¹. Where a rule has no sensible application to a bicycle, it does not apply¹.

Where to ride

Ride as near as practicable and safe to the right-hand side of the roadway when you move slower than traffic². Chicago lists the reasons to leave the right edge:

• Overtaking another bicycle or vehicle.
• Preparing for a left turn.
• Avoiding fixed or moving objects, parked or moving vehicles, pedestrians, animals, surface hazards or a lane too narrow to share².
• Approaching a place where a right turn is authorized².

On a one-way roadway with two or more marked lanes, you may ride near the left-hand side². You may pass a slower or standing vehicle on the right, with due care, unless you are riding a Class 3 e-bike. If a vehicle has just let passengers out on its right side, yield to them or pass on the left².

Ride single file. The exceptions are paths set aside for bicycles and stretches where two abreast does not impede the normal and reasonable movement of traffic. Two riders abreast stay inside one lane³.

Lake Shore Drive is closed to bicycles, as is any public way where signs prohibit them⁶. Illinois requires riders to travel in the same direction as other traffic¹³.

Sidewalks

Riders 12 and older may use a sidewalk only where it is marked as a bike route, or to reach the nearest roadway, intersection or bike path, or a bike share station. Along a business street, no age exemption applies⁶. Anyone on a sidewalk yields to pedestrians and gives an audible signal before passing². The full rule, with the North Sheridan Road exception, is on the sidewalk page.

Signals, hands and phones

Chicago prescribes three hand signals. A left turn is the left hand and arm extended horizontally. A right turn is the left hand and arm extended upward, or the right hand and arm extended horizontally. A stop or slowdown is the left or right hand and arm extended downward¹⁰. Keep at least one hand on the handlebars: no package or article may prevent it¹⁴.

Handheld phone use is banned while riding. Hands-free and voice-activated use is exempt⁵. Fines escalate:

Offense	Fine
First	$20 to $505
Second	$50 to $755
Third and later	$75 to $1005
In addition, if the violation occurs at the time of a traffic crash	Up to $5005

Lights, reflectors and brakes

At night, the city requires a head lamp emitting white light visible from 500 feet. The rear needs a red reflector effective up to 200 feet or a red lamp visible from at least 200 feet⁴. Illinois sets its own numbers: a white front lamp visible from at least 500 feet, and a red rear reflector visible from 100 to 600 feet, or a steady or flashing red lamp visible from 500 feet to the rear in addition to or instead of it¹⁵.

Every bicycle also needs a brake that makes the braked wheel skid on dry, level, clean pavement⁴.

What drivers owe you

A driver passing a bicycle must leave a safe distance of not less than 3 feet and hold it until clear^7,12. Chicago fines a violation $150, or $500 if it causes a collision with a bicycle¹⁶. The detail is on the three-foot passing page.

Opening a car door into a bicycle is a separate violation. The city fines it $300 when it interferes with a bicycle’s movement and $1,000 when it causes a collision with a bicycle¹⁶. See dooring.

E-bikes

Chicago applies the Title 9 rules for bicycles to low-speed electric bicycles, except as provided in sections 9-36-020, 9-40-060, 9-52-020 and 9-52-040⁸. Only a person 16 or older may operate a Class 3 e-bike, and no one may ride one on a sidewalk^8,6. The state is changing its e-bike law. Public Act 104-0854 takes effect January 1, 2027 and sets age 15 for Class 1 and Class 2 operators¹¹. Read the Illinois e-bike rules before you buy.

Where to go next

The rules and safety hub collects each topic on its own page. For a commuter’s view of the same rules, start with the Chicago commuting guide. For the helmet question, see Illinois helmet law.