Yes, you must indicate on multi-lane roundabouts to show your intentions, signaling right when turning right/U-turning on approach, and always signaling left as you exit, just like a normal road, while choosing your lane based on your intended exit (left lane for left turns, right for right/U-turns, either for straight ahead), following signs and markings.
Ensure you're signalling in the direction you want to take before entering the roundabout, unless you're travelling straight on, in which case you don't need to signal until you pass the exit before the one you are going to use.
You must give way to all vehicles already on the roundabout. You must continue to indicate right as you turn. When you leave, you must indicate left, if practical.
When you drive through a roundabout always use your indicators to let other road users know what you're going to do. At a roundabout you need to indicate: as you approach the roundabout (unless you've driving straight through) as you pass the last exit BEFORE the one you want to take.
Again position your car on the left-hand side or keep to the left-hand lane if there are two lanes. Road marking or signs will guide you, so keep an eye on this. No indicator is needed when approaching the roundabout. You will signal when you approach your exit to let others know you intend to take the 2nd exit.
Failing to give way:
This is by far the most common mistake drivers make on roundabouts. Remember, drivers already in the roundabout have the right of way, so give way to them before entering.
The golden rule
You approach the roundabout from the 6 o'clock position, entering the roundabout by turning left so that you go around in a clockwise direction, while at the same time, giving way to traffic coming from your right, who are already on the roundabout.
The four essential rules for roundabouts are: Slow Down, Give Way to traffic already inside (including pedestrians/cyclists), Use the Correct Lane (left for left/straight, right for right/U-turn, following signs), and Signal your intention to exit by indicating left just before your exit, as noted by Transport Victoria, NSW Government, and RAC WA.
Lane Positioning: Before entering the roundabout, decide which lane you should be in:
When driving on a multi-lane highway, stay in the right lane if you are driving slower than the traffic around you. The left lane is for passing only.
3 lane roundabout rules in the UK
If you are going left, you should use the left-hand lane. Use the right-hand lane for going right. If you are going ahead, you should use the middle lane, unless road markings tell you otherwise.
Roundabouts Rules
If a multilane roundabout, choose your lane based on your intended exit. Watch for pedestrians and cyclists and be ready to stop at the crosswalk. Signal left or right to warn other drivers if you intend on turning at the roundabout (no signal if you plan to proceed straight through the roundabout).
In Australia, when approaching a roundabout, slow down, give way to vehicles already in the roundabout (especially those from the right), select the correct lane based on your exit, indicate your intentions, and follow road arrows, signaling left as you exit. Always yield to traffic already circulating, use indicators for turns (left for straight/left, right for right/U-turn, then left to exit), and obey lane arrows on multi-lane roundabouts.
To the guy driving this car, please slow down, get into the correct lane if you intend on turning right.... speeding, not giving way and cutting across in the middle of the roundabout so you can turn right was so dangerous to myself and the other road users around you.
As a general rule of thumb:
If you are going straight through (see the blue car), then drive in the lanes which are indicated by the road markings (there will be a straight arrow), and do not signal until you pass the exit before the one you want to take.
Enter the roundabout when there is a safe gap in the traffic. If you do need to change lanes while on the roundabout, you must indicate and give way to any vehicle in the lane you're moving into. You can only change lanes mid-roundabout where there's a broken white line.
You are only required to signal left upon exiting the roundabout. If you are entering a multi-lane roundabout, you may approach from either left or right lanes (unless there are road markings/signs with other instructions).
Avoid failure to yield
To proceed into the roundabout, entering drivers must yield to all traffic from the left, waiting until all traffic from the left is clear. Entering drivers are not permitted to enter alongside cross traffic, because both lanes of cross traffic are allowed to exit the roundabout.
Failure to Yield: Failure to yield is the most common cause of accidents in roundabouts. Drivers must yield to traffic that is already in the roundabout. Unfortunately, confusion or impatience often leads to errors.
As you arrive at the roundabout, traffic coming from your right has right of way - you must stop until there is a break in traffic. Use your indicators for lane changes and where you are exiting. Signal your intent to other drivers when entering, going around and exiting the circle.