There are 3 things, when driving/riding, that will get 'my gander' up .
Lane discipline on roundabouts, the white lines are there for a reason.
Use or lack of use of indicators and
Mobile phone usage............well to get all three in one go, you can imagine...............
I was on my Trike, entered a 3 lane roundabout to turn right, IDIOT in middle lane, on phone, came into my lane and was forcing me towards the kerb of the island, no indication on his part.
Luckily it was summer and his window was down, I really shouted at him 'get of the f**king phone, he had no clue I was there and nearly s**t himself, but the look on his face was an absolute picture, talk about guilty.... I just went on my way laughing