Given the mirror coverage and blind spots shown in this picture, what should you do before you change lanes?
Correct answer: Turn on your signal, check your mirrors, and look over your shoulder.
Answer options
ATurn on your signal and rely only on a quick look over your shoulder
BTurn on your signal and rely only on what your mirrors show you
CTurn on your signal, check your mirrors, and look over your shoulder Correct
Why
As the diagram shows, mirrors leave blind spots beside and just behind your car, so after signaling and checking the mirrors you still need a quick look over your shoulder. Relying on only one kind of check can hide a vehicle in the next lane.