From what i've read the roundabout signalling it is similar to a normal intersection. If you intend to turn right, use the right turn signal; if you intend to drive straight through... then no signal; if you want to turn left, use the left turn signal. It sounds simple enough.
This is assuming you don't have a giant ****ing tree or monument in the centre of the roundabout and you can actually see where the other vehicle is coming from.
This is assuming you don't have a giant ****ing tree or monument in the centre of the roundabout and you can actually see where the other vehicle is coming from.