You want to move into the next lane. Keeping in mind the blind spots shown in the picture, which routine is complete and safe?
Correct answer: Signal, check your mirrors, then glance over your shoulder.
Answer options
ASignal, check your mirrors, then move over right away
BSignal, check your mirrors, then glance over your shoulder Correct
CSignal, glance over your shoulder, then move over right away
Why
As the picture shows, the mirrors cover the green zones but leave a red blind spot on each side of the car. That is why a lane change needs all three actions: signal, check the mirrors for traffic coming from behind, and glance over your shoulder to catch a vehicle hidden in the blind spot.