The picture shows what your mirrors can and cannot see. What should you do before moving into another lane?
Correct answer: Use your turn signal, check the mirrors, and glance over your shoulder.
Answer options
AUse your turn signal, check the mirrors, and glance over your shoulder Correct
BUse your turn signal and glance over your shoulder, with no mirror check
CUse your turn signal and check the mirrors, with no shoulder check
Why
As the red areas in the picture show, each side of the car has a blind spot that the mirrors miss, and only a quick glance over your shoulder covers it. Signal, use the mirrors, check that blind spot, and move over only when the lane is clear.