What is the purpose of a blind spot monitoring system?

A blind spot monitoring system is designed to assist drivers in maintaining awareness of their surroundings, particularly areas that are not visible through standard mirrors. This safety feature helps prevent accidents by detecting vehicles or objects in the driver's blind spots and warning them when it is unsafe to change lanes or merge. When another vehicle is detected in the blind spot, the system typically activates a warning light on the side mirror or provides an auditory alert, thus reducing the risk of collision.

While the other options mention different aspects related to vehicle functionality, they do not pertain to the primary purpose of a blind spot monitoring system. Enhancing audio performance and aiding in fuel efficiency are unrelated to monitoring surrounding traffic, and warning drivers of speed limits falls under a different category of vehicle safety technologies.