Driving Tests

Illinois Roundabout Rules: How to Enter, Yield and Exit

informational·how to guide·Published March 29, 2026

How do you drive through a roundabout in Illinois?

Slow down as you approach, and look for signs and pavement markings that prohibit certain movements. Yield to all traffic, including pedestrians and bicycles, then enter by turning right when it is safe. Traffic moves counter-clockwise around the central island. Stay in your lane, and use your right turn signal to show that you are exiting. Yield to all traffic again as you leave.

Where the Illinois roundabout rules come from

The roundabout steps come from the Illinois Secretary of State's Illinois Rules of the Road handbook. The yield sign and merging rules come from the Illinois Vehicle Code, 625 ILCS 5/11-904 and 625 ILCS 5/11-905. This guide covers the rules as of 2026. Confirm the rules with the Illinois Secretary of State (ilsos.gov) before you drive.

How to drive through an Illinois roundabout, step by step

1
Slow down on approach
Reduce your speed before you reach the roundabout. You need time to read the signs and to watch for people and vehicles.
2
Read the signs and markings
Look for street and direction signs before you enter. They help you choose your exit, and they should be posted along the roadside before the roundabout. Also look for signs and pavement markings that prohibit certain movements.
3
Yield to all traffic
Before you enter, let all traffic go first: vehicles already in the circle, pedestrians and bicycles.
4
Enter by turning right
Turn right into the roundabout when it is safe to do so. Traffic travels counter-clockwise around the central island.
5
Stay in your lane
A roundabout may have more than one lane. Pick your lane and keep to it as you go around.
6
Signal right and exit
Use your vehicle's right turn signal to let other drivers know that you are exiting. Yield to all traffic, including pedestrians and bicycles, when you leave too.

Who must you yield to in a roundabout?

All traffic: vehicles, pedestrians and bicycles. The Illinois rule covers both ends of your trip, so you yield when you enter and again when you exit. At the exit, you may have to wait for a person on foot to cross before you leave the circle. This fits the general Illinois rule that a driver must yield to pedestrians when making a turn at any intersection. A practice question asks what to do when a vehicle is already circulating toward your entry point. See yielding before you enter a roundabout for the answer.

Lane choice and exits: what to do in each case

You do not know which exit to take

Read the street and direction signs before you enter. Use them to decide which exit to take.

The roundabout has more than one lane

Use the signs and pavement markings as you approach. Once you are in a lane, stay in your lane.

You want to change lanes or take your exit

First check for vehicles that may be continuing through the roundabout. Expect some of them to be in blind spots that your rearview and side mirrors cannot show.

A sign or marking prohibits a movement

Follow it. Signs and pavement markings can prohibit certain movements in a roundabout.

When should you use your turn signal?

Use your right turn signal to show other drivers that you are exiting. For turns in general, Illinois sets distances: in a business or residential area, you must give a continuous turn signal for at least 100 feet before turning, and in other areas the signal must be given at least 200 feet before turning. A practice question covers signaling and yielding at your exit.

Roundabout checklist

Roundabout checklist
Stage	What to do
Approach	Slow down. Read the street and direction signs. Look for signs and markings that prohibit movements.
Entry	Yield to all traffic, including pedestrians and bicycles. Turn right when it is safe.
Inside the circle	Travel counter-clockwise. Stay in your lane. Check for vehicles continuing through before you change lanes.
Exit	Signal right. Check blind spots. Yield to all traffic, including pedestrians and bicycles.

Illinois yield sign and merging laws

Where a yield sign is posted, 625 ILCS 5/11-904 says you must slow down to a speed reasonable for the existing conditions. Stop if safety requires it, then yield the right-of-way to any vehicle in the intersection or close enough to be an immediate hazard. If you are in a collision at the intersection after you drive past a yield sign, the law treats it as prima facie evidence that you failed to yield. Section 11-905 adds that at an intersection with lanes for merging traffic, each driver must adjust speed and lateral position to avoid a collision.

Will roundabouts be on your Illinois written test?

The basic written exam asks multiple-choice and true-or-false questions about traffic laws, safety rules, crash prevention and vehicle equipment. It also asks you to identify traffic signs by shape, color or symbol, and to identify signals and pavement markings. Read the roundabout section of the handbook before you test, and review how a four-way stop works, another right-of-way topic. If you plan to test soon, the Illinois written test guide explains the exam. Our practice tests and question pages are free and in English only.

Key takeaways

Traffic moves counter-clockwise around the central island. Enter by turning right when it is safe.
Yield to all traffic, including pedestrians and bicycles, when you enter and when you exit.
Slow down, read the signs and markings, pick your exit early and stay in your lane.
Check for vehicles continuing through, and expect them in your blind spots, before you change lanes or exit.
Next step: practice these rules on the free Illinois Class D practice test.

Illinois roundabout rules: common questions

Do you have to stop before you enter a roundabout?

Only when you need to. Slow down as you approach and enter by turning right when it is safe. If a vehicle, a pedestrian or a bicycle is in your path, stop and let it go first. Where a yield sign is posted, Illinois law says to slow down to a reasonable speed and to stop if safety requires it.

Which way do you drive in a roundabout?

Counter-clockwise, around the central island. The Illinois Rules of the Road handbook uses the names "rotary" and "roundabout" for the same kind of intersection, so the direction is the same for both. You turn right to enter, then keep going around the island until you reach your exit.

Can you change lanes inside a roundabout in Illinois?

The handbook tells you to stay in your lane. It also says not to change lanes or take an exit before you check for vehicles that may be continuing through the roundabout. Some of those vehicles can be in blind spots that your rearview and side mirrors do not show.

Do you have to yield to bicycles in a roundabout?

Yes. In Illinois, vehicles entering or exiting a roundabout must yield to all traffic, and that includes bicycles and pedestrians. When you pass a bicyclist on any road, including one on the shoulder or in a bike lane, keep a minimum distance of 3 feet.