When should you conduct a quick head check to confirm your blind spot?

Conducting a quick head check to confirm your blind spot is essential before changing lanes. This action is vital because it allows you to visually confirm that there are no vehicles or obstacles in the area you may not see through your mirrors. Relying solely on mirrors can be misleading, as there can be vehicles positioned in your blind spots that could pose a risk if you attempt to change lanes without proper checking.

By making this head check, you enhance your awareness of surrounding traffic and ensure a safer lane change. It's a fundamental practice in defensive driving that helps prevent accidents. While it is also important to do checks before entering a highway or during other driving scenarios, the specific context of changing lanes necessitates this additional precaution to stay safe on the road.