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

A parked car is a hazard before anyone touches the door. The city and the state both regulate the moment the latch releases, and Chicago attaches fines that rise when a bicycle is involved.

The rule

Chicago’s ordinance and the Illinois statute use the same words:

No person shall open the door of a vehicle on the side available to moving traffic unless and until it is reasonably safe to do so, and can be done without interfering with the movement of other traffic¹

The ordinance is Municipal Code section 9-80-035¹. The state version is section 11-1407 of the Illinois Vehicle Code³. Both add a second duty: do not leave a door open on the traffic side longer than necessary to load or unload passengers^1,3.

The subject is “no person,” not “the driver.” A passenger stepping out at the curb is bound by the same rule¹.

What it costs

Chicago sets the dooring penalties in a section titled for bicycle safety violations. The amount depends on the result:

Result of the violation	Fine per offense
Interferes with the movement of a bicycle	$3002
Causes a collision between a motor vehicle and a bicycle	$1,0002

The City’s tip sheet for drivers warns that violations of 9-80-035 may bring a fine of up to $1000, and that crashes due to doorings cause critical injuries and deaths every year yet are easily avoided⁵.

The same section prices the other violations that put riders at risk:

Violation	Fine per offense
Passing a bicycle closer than 3 feet (9-36-010(c))	$1502
Standing or parking in a bike lane or on a bike path (9-40-060)	$2502

The door zone

The Secretary of State’s rider guide defines the danger. The “door zone” extends 4 feet along the left side of a lane of parked cars, where a person opening a door while exiting a car can hit and seriously injure a person biking⁴. Its instruction is blunt: ride at least 4 feet away from parked cars on the street. If there is no room to pass open car doors safely, take the full lane⁴.

Chicago’s own bicycle chapter backs the move. A rider may leave the right-hand side of the roadway when reasonably necessary to avoid conditions such as parked or moving vehicles⁶. A bike lane beside parked cars is the hard case. The state guide says to be aware of parked vehicles and the possibility a motorist could unexpectedly open the door, and to avoid riding in the door zone, where a door can open into the bike lane⁴.

The Dutch Reach

When exiting a vehicle, reach across with the hand farthest from the door. Using the far hand turns your shoulders toward the door and makes you look for oncoming bicyclists or other traffic⁴. The city’s guidance for drivers says to check for cyclists before you open your door⁵.

Related rules

A driver who passes a rider too closely commits a separate violation with its own fines. See the three-foot passing law. If a door has already hit you, the steps to take are on the crash checklist. Cars parked in a bike lane are covered on the parking in bike lanes page. The full list of rider duties is on the Chicago bike laws page, and every topic lives in the rules and safety hub.