On a two-lane road with traffic moving in both directions, to pass a vehicle on the left, you must

On a two-lane road with traffic moving in both directions, you may pass a vehicle on the left if it is not prohibited and the pass can be completed safely without exceeding the speed limit. To do this, first signal a left turn. Then when it is safe, move into the left lane to start the pass. After passing the vehicle, signal a right turn. When you have completely cleared the vehicle you passed, return to the right lane.