How should the left side view mirrors be adjusted for optimal visibility?

To achieve optimal visibility from the left side view mirrors, the adjustment technique where the head is placed against the side window is most effective. This position allows the driver to set the mirror so that they can see the largest possible area behind and to the side of their vehicle. By doing this, you minimize blind spots, ensuring that you can notice vehicles or objects coming up alongside you.

When your head is against the side window, the mirror should be adjusted outward until you just see the edge of your vehicle in the mirror. This placement is advantageous because it broadens your field of vision and helps you detect other vehicles before they reach your blind spot, enhancing overall safety while driving.

Other adjustment methods, such as centering in the seat or looking straight ahead, may not provide the necessary range of visibility, leaving blind spots that could lead to potential hazards when changing lanes or merging. Similarly, positioning the mirror at a downward angle could obscure visibility of vehicles approaching from the rear, which contradicts the primary purpose of the mirrors. Thus, placing your head against the side window ensures the mirror is optimally set for driving safety.