September 2010 – Most people are unsure about when or if to indicate when leaving a roundabout. This is something that we should be aware of as the current penalty is 2 demerit points and the associated fine is approximately $240. The South Australian Handbook states: At all times, you should signal with your indicators to let other drivers know your intentions. Immediately before leaving the roundabout (i.e. when passing the exit before your exit) you must signal with your left indicator, unless it is impracticable to do so. This applies to turning left and right or continuing straight ahead. This tells drivers waiting to enter the roundabout where you intend to exit.