Approaching a roundabout can feel a bit tricky if you’re not used to it. The lane lines, cars inside the circle, and exit signs can be overwhelming. However, it’s really fairly straightforward once you know the rules. Using your turn signal is one rule. It helps other drivers know what you intend to do, making the whole process smoother and safer. Let’s break down how and why you should use your turn signals in a roundabout.

Some drivers think that the distance traveled inside a roundabout is just too short for signaling. Sure, most roundabout interactions are brief. But not knowing where other vehicles are headed (and vice versa) just creates what seems like “erratic” movements that are difficult to track. This increases the likelihood of a car accident. You should provide the same courtesy you’d appreciate from others.

First, as you approach the roundabout, decide which exit you need to take. If you’re taking the first exit, signal right as you approach. This tells drivers behind you and those waiting to enter that you plan to exit immediately. It helps them gauge whether they can enter the roundabout safely.

If you plan to go straight (which is usually the second exit), you don’t need to signal as you approach. However, you should still signal right just before you reach your exit. This helps people know you’re leaving the roundabout.

For those taking the third exit or making a full loop (essentially turning left or pulling a U-turn), signal left as you approach. This tells others that you’re going further around. As you pass the exit before the one you want, switch to a right signal. This indicates you are about to leave the roundabout.

Some drivers wonder if signaling while changing lanes within the roundabout is necessary. In a word, yes. However, note that some roundabouts with double lanes don’t have dotted lane lines. In these roundabouts, the inner lane allows you to exit at each option without moving to the outer lane. The lane line will be solid, meaning you should not need to cross over, or you’ll risk a collision. Others do have dotted lines all the way around or in certain “transition” zones.

Now, there’s a difference between “should” and “have to” use turn signals here. Some state traffic laws might not require signaling in roundabouts under any circumstance. Others have more specific laws that spell out when signaling is and isn’t necessary. For instance, when the driver continues on the road they entered the roundabout on. In this instance, the driver is going “straight” through the roundabout and isn’t technically turning. If the driver is moving from one road to a different one, though, they might be legally required to signal.

So, depending on your state, a police officer could flag failing to signal in a roundabout just like any other “failure to signal” incident.

Regardless of your local laws, you should still signal as a courtesy to other drivers.

For a great roundabout explainer, watch the simple tutorial below: