After passing another vehicle, do NOT __________ until you are well ahead of that vehicle.

Explanation

To pass another vehicle, you usually pass it on the left. Do not return to the lane you started from until you have made sure that you're well ahead of the passed vehicle. (A recent survey on aggressive driving by the AAA Foundation for Traffic Safety found that about one out of four American drivers had deliberately tried to block another vehicle from changing lanes.) Signal a right turn to return to the original lane.