Relying solely on your side mirrors can completely eliminate blind spots.

• A. True
• B. It will eliminate all blind spots only at night
• C. It cannot eliminate all blind spots with mirrors alone
• D. It eliminates blind spots with proper signaling

Answer: (C)

Blind spots exist because parts of the road behind and to the sides of your vehicle aren’t visible through your mirrors, no matter how you adjust them. Side mirrors show lanes next to you, but the car’s shape, pillars, and the angle of view create areas you can’t see from the mirror alone. To move safely between lanes, you need to supplement mirror checks with a quick shoulder check to confirm those unseen areas before changing lanes or merging. Signaling helps others know your intent, but it doesn’t remove blind spots. So, while mirrors are essential, they cannot eliminate all blind spots by themselves.