Originally Posted by
robertva
Times left turning traffic would have the right of way:
* Over traffic arriving from the left at the same or later time to a four or three way stop (both vehicles have stop signs).
* Traffic from the cross street has a red light, stop sign (or flashing red light), or yield sign (or flashing yellow). This right of way only applies over traffic from the cross street.
* The left turning traffic has a protected green (left turn arrow), which would occur when traffic from other directions have red lights (except for the green arrows for oncoming left turn traffic AND oncoming right turn traffic with a green arrow where the left and right turns are into a multi lane street/highway).
Note that left turn traffic is required to enter the first available lane on the left as they complete the turn unless signs or pavement markings indicate otherwise. Any use of other lanes after or during the turn is considered a lane change while driving on the street/road they are entering with the usual lane change signaling requirements. Likewise right turn traffic has to use the first available lane on the right. Watch for pavement markings guiding multiple turn lanes to more distant lanes.
Where there's a entrance ramp like right turn (a little triangular island or zebra stripped safety zone separating the right turn traffic from the main intersection) the right turning traffic should yield to traffic on the street/highway they are entering, even if the traffic made a left turn in the main intersection.
Even when you have the right of way you are still required to avoid a collision when possible.