Originally Posted by
mikeybikes
Pull in behind the car and wait for it to complete its right turn. Never pass a right turning car on the right.
+1
The driver turning right will never see you. You will be passing on their blind spot. Passing to their left can be hazzard when there is a car behind you. The car behind you sometime expect you to pass right while they tries to pass left of the car turning right, resulting with the car behind you clipping you as you pass left. In a situation as this, a good mirror will help knowing what is behind you and to your left.
Most of the time I will take the lane and slow down my approach and try timing my speed so that the car complete the turn as I reach approach them, otherwise it is stop and wait.