When should you check your blind spot while driving?

Checking your blind spot is a critical safety measure that drivers must practice, particularly just before changing lanes or merging. This is because blind spots are areas around a vehicle that cannot be easily seen in the mirrors, and they can hide other vehicles, cyclists, or pedestrians. By checking your blind spot at this moment, you ensure that the space is clear of any potential hazards, thus reducing the risk of collisions.

This practice is essential in maintaining safety on the road, as merging or changing lanes without confirming that the area is clear can lead to dangerous situations. Utilizing mirrors alone is insufficient, as they do not provide a full view of the surrounding area; thus, turning your head to check the blind spot becomes necessary.

The other options do not necessitate checking the blind spot with the same urgency or relevance. For example, while checking before starting to move or when parking is important for overall safety, those situations typically involve lower risks than changing lanes or merging into traffic. Similarly, having a clear view of the road does not negate the need to check blind spots, especially since other vehicles may approach from behind or the side without your notice.