On the way home from work yesterday I was in primary on a 2-lane RAB. A car joins the RAB just in front of me, then he puts his brakes on because a van already on the RAB was approaching him fast. I tried to avoid hitting the car by going round the back of him, but ended up hitting the rear at low speed. Anyway, the driver stopped, there was no damage done and it all ended amicably. I'm not sure who was at fault, though. Any ideas?