Why should you use your mirrors while making turns?

• A. To estimate road speed
• B. To check the position of the rear of your vehicle
• C. To monitor your fuel gauge
• D. To count the number of passing vehicles

Answer: (B)

The key idea is that mirrors are used to watch what’s happening behind and to the sides of a large vehicle as you move. When you turn, the front of the vehicle pivots, and the rear can swing wide or come close to curbs, pedestrians, or other vehicles. By checking your mirrors, you can keep track of where the rear end is and adjust your steering and path to maintain a safe clearance. This helps you avoid hitting objects or stepping over into another lane during the turn.

The other options don’t help you manage the turn: estimating road speed, monitoring the fuel gauge, or counting passing vehicles aren’t about tracking the rear end’s position during a turn.