What is the use of mirrors that are color-coded?

The use of color-coded mirrors is primarily for the purpose of facilitating quick identification of specific adjustment settings for safety checks. When mirrors are color-coded, it allows drivers to easily differentiate between various settings or angles needed for optimal visibility. This is crucial for ensuring that bus drivers maintain a clear view of their surroundings, including the positions of students and other vehicles, which is vital for the safe operation of the bus.

By having a visual cue such as color coding, drivers can promptly make any necessary adjustments without having to remember or figure out which setting corresponds to which position, thereby enhancing safety and efficiency. This method supports the broader goal of increasing awareness and minimizing blind spots, ensuring that all safety checkpoints are met before and during the operation of the bus. Other choices do not contribute to the practical functionality or safety measures of operating a school bus.