Why should you check your mirrors before, during, and after changing lanes, not just once beforehand?

Pick an answer

1. Checking after the lane change has no useful purpose
2. It is only necessary when changing lanes at low speed
3. One mirror check right as you begin turning the wheel is enough on its own, an easy mistake to make with beforehand
4. Traffic conditions can change quickly, and a vehicle can enter your blind spot during the maneuver

Correct!

Not quite. The correct answer is highlighted.