Which of these statements is true about changing lanes?

Question

Before changing lanes, signal, look in all your mirrors, and look over your left or right shoulder to make sure the lane next to you is clear. Looking over your shoulder is a way to check your blind spot to be sure there is no vehicle, motorcycle, or bicycle traffic in the next lane.

Accepted Answer

Look over your right shoulder for a right lane change and your left shoulder for a left lane change.

Answer

You only need to turn and look over your right shoulder for lane changes to the right or left.

Answer

Vehicles with two outside mirrors do not have blind spots.