What is the primary function of convex mirrors on a vehicle?

The primary function of convex mirrors on a vehicle is to increase view and decrease blind spots. Convex mirrors are curved outward, which allows them to capture a wider field of vision compared to flat or concave mirrors. This expanded view is particularly helpful in identifying vehicles or obstacles that might be in areas not easily seen through standard side mirrors. By using convex mirrors, drivers can better assess their surroundings, enhancing safety by reducing the likelihood of accidents caused by not seeing other vehicles or objects in blind spots.

The other options do not relate to the fundamental purpose of convex mirrors. For instance, while fuel consumption is important for vehicle efficiency, it is not something that can be influenced by the type of mirror used. Similarly, headlight visibility is typically related to the quality and alignment of headlights rather than the type of mirror. Lastly, the clarity of reflection at night is more dependent on the mirror's material and surface than on its convex shape.