Be constantly aware of your surroundings and what others are doing. They have not necessarily seen you next to them. Roundabouts are a crap shoot, make sure you watch everyone! Do indicate, do not cut in and out of lanes unsafely to try and prove you're faster, you're not, you just look like an idiot and endanger other road users. Be curteous to and patient with other road users. While I can't do the patience thing myself (oops) I am curteous and aware of other people needing to change lanes or get through traffic lights as well as me etc so drive with awareness and respect that other people have places to go too. Use common sense and observation to their max, and then add a bit more. lol. It's the only way to survive!