I agree Mercury, my biggest pet hate on the road. Roundabouts are not Stop Signs. I've seen people drive up to an empty roundabout. Stop and then look, hesitate and then go - and not just the old(er) folk.
Even
worse is there are a couple of roundabouts in my town which are basically T junctions, dual carriage way, with the left hand lane sign posted as being a slip lane.
Stop, look, hesitate, stop, put the handbrake on. Creep forward, close eyes and off they go.
I reckon roundabouts are great inventions, but they are my only source of micro road rage
'don't stop - don't stop - don't stop - Arrgh, why did you stop'.