Final answer:
A 'Head Check' is the act of turning one's head to check for unseen traffic in mirrors, which is true and crucial for driver safety. This action is particularly important for spotting vehicles in blind spots, evaluating road signs, and identifying emergency vehicles through Doppler shifts in sound.
Step-by-step explanation:
True, a "Head Check" refers to the action of turning your head to look to the left or right to check for traffic that might not be visible in your vehicle's mirrors. This is an essential part of driving safely to ensure that you are aware of all the vehicles around you, especially before changing lanes, turning, or entering traffic. Headlights on your car should be used to enhance visibility but are not a substitute for a head check as they do not eliminate blind spots.
Additionally, one might perform a head check when hearing sirens or when detecting the Doppler shift in sound frequency, indicating an emergency vehicle is approaching and may help you to safely navigate traffic.
Road signs provide vital information about the rules of the road, traffic conditions, and potential hazards. Proper interpretation and understanding of these signs are crucial to ensuring safety while driving.