What are the typical colors of the air brake warning lights?

The correct answer highlights the standard color coding used in air brake warning systems to ensure that drivers can quickly understand the status of their braking system. The use of red for low pressure serves as an urgent alert, indicating that there is a critical safety issue that requires immediate attention. Red is universally associated with danger and the need to stop or take action.

On the other hand, the choice of yellow for the parking brake light conveys a caution warning, meaning that while the vehicle may not be in immediate danger, the driver should still be aware of the parking brake’s status and ensure it is disengaged before moving. This color coding system facilitates quick recognition and helps promote safe driving practices. The mix of red and yellow effectively communicates varying degrees of urgency regarding the braking system.