Final answer:
An enhanced mirror setting in a vehicle reduces the head or shoulder turn necessary to check blind spots, offering improved safety while driving.
Step-by-step explanation:
When discussing the mirror setting in the context of driving a vehicle, it relates to the position of a vehicle's side mirrors. The advantage of using the enhanced mirror setting is that it aims to reduce blind spots and improve visibility.
With an optimal mirror setting, a driver's head or shoulder turn to check for blind spots before lane changes or turns is greatly decreased.
This means the reliance on turning the head or moving the shoulders to check for vehicles in adjacent lanes is reduced, though it should be noted that some head movement is always necessary for complete situational awareness.