I'm not sure it'll make much difference. I cycle (a lot) - most drivers are reasonably considerate. Sometimes they make mistakes, sometimes I do. A few are arseholes, but I can't see a change in the law changing their behaviour. If you cycle on the road (as I do), you have to assume that other drivers may not have seen you or may cut you up etc. otherwise you'll be seriously injured (or worse). I appreciate the law trying to protect me, but I don't think it'll change anything day to day.