Why is it crucial to check blind spots before changing lanes?

Checking blind spots before changing lanes is crucial because these areas around your vehicle are devoid of mirrors and can obscure your view of other vehicles, pedestrians, or obstacles that may be present. When you signal your intention to change lanes, the action needs to be done safely, which requires ensuring that there are no vehicles occupying your blind spot.

If a driver does not check these areas, they risk colliding with another vehicle that may be approaching from behind in the unseen area, leading to potential accidents. This is particularly important in heavier traffic situations where vehicles can be traveling at various speeds. By checking blind spots, a driver is being proactive in establishing the safety of their intended maneuver, thereby reducing the risk of an accident. This awareness and caution are key components of safe driving practices, especially when changing lanes.