What is the primary action you should perform over your right shoulder before turning right?

The primary action you should perform over your right shoulder before turning right is to perform a head check. This action is crucial because it allows you to visually confirm that your blind spot is clear of vehicles, cyclists, or pedestrians who may not be visible in your mirrors. By turning your head to check this area, you minimize the risk of collisions and ensure a safer turn.

Performing a head check is a key aspect of defensive driving, especially when making maneuvers that involve changing lanes or turning. It enhances your awareness of the environment around your vehicle, allowing for a more comprehensive understanding of the traffic situation.

While checking for pedestrians and looking for oncoming traffic are also important safety measures, they are not the primary action focused on the blind spot that a head check addresses. Adjusting your side mirror is useful for overall visibility but does not substitute for physically checking your blind spot directly.