I think the MOST common kind of accident is when you are turning left using a filter lane and looking right to check oncoming traffic, the car turning in front seems to be going to turn as the oncoming traffic is very far away, so you think you can also follow and make the left turn. Then all of a sudden the guy in front scared and Jam brake. You are looking right periodicaltly to check for oncoming traffic so it is almost impossible to brake in time.
after kenna that time once (my only accident in 10+ years of driving) I keep my EYES on the car in front when turning left. Only when I see that guy makes his turn, then I turn right to check for oncoming traffic.