Positioning on roundabout and 12 o’clock rule
Position left – if you need 1st exist
Position left – if you need 2nd exist. 2nd exist could be straight driving
Position right – if you need 2nd exist and you see information to position right even for 2nd exist. 2nd exist could be straight driving
Position right – if you need 3rd, 4rd, 5th and so on
Think of roundabout as 12 o’clock. If exit is before or on 12 o’clock signal left on entering roundabout. If the exit is even slightly after 12 o’clock signal right when entering roundabout. For example, in Pinner mini rounabout has 2nd exit very slightly after 12 o’clock. If you do 2nd exit, signal right and during exiting no need to quickly signal left or cancelling the signal as it is mini roundabout.
In normal roundabout on exit, of course you must signal left. Even if left lane is blocked by competitive driver and you decide to exit on right lane, keep signalling left to show your intention of leaving roundabout to the car/s benind you.
General scenario how to switch lane before leaving the roundabout: So, you are on the right lane and leaving on 3rd exit. You pass 1st exit and it’s entry as normal, on approach to 2nd exit – pass exit part and start checking left/interior mirrors and drift your car to it’s entry where cars are waiting to emerge into roundabout. Don’t signal yet, just drift, look to cars at the roundabout as they should not emerge and give way to you, check left/interior mirrors, when you drift close enough to the left lane and everything else is safe to change lanes – signal left and switch lanes quickly. By following such scenario you protect yourself from late and risky last minute lane change on 3rd exit. This way any other car will obey and stay behind you as you will have a priority leaving the lane first, just when leaving quick check the right lane for possible overtakers.