What is the primary purpose of performing a head check before making a turn?

The primary purpose of performing a head check before making a turn is to assess your blind spots. This action helps ensure that there are no vehicles, cyclists, or pedestrians hidden from view in the areas around your vehicle that mirrors cannot effectively display. By turning your head and looking over your shoulder, you can gain a better awareness of your surroundings, significantly reducing the risk of a collision during the turn. Checking blind spots is a crucial component of safe driving, promoting overall situational awareness and contributing to a safer driving environment for everyone on the road.