Arizona Air Brakes CDL Practice Test

Neglecting to drain water from air tanks during cold weather can lead to brake failure due to the freezing of moisture in the air system. When compressed air is stored in air tanks, it can carry moisture, and if this moisture is not removed, it can condense and accumulate in the tanks. In cold temperatures, this accumulated water can freeze, leading to ice formation in the air lines and other components of the braking system. When ice forms in these components, it creates blockages or malfunctions that can prevent air from reaching the brake chambers as needed, disrupting the braking process. This can lead to a significant loss of braking power or complete brake failure, making it vital to regularly drain the air tanks to eliminate any moisture and maintain safe and effective brake operation, especially in colder climates.