Why is it important to keep the air brake system free from moisture?

Keeping the air brake system free from moisture is crucial primarily because moisture can freeze and lead to brake failure in cold conditions. When water enters the air brake system and the temperatures drop, it can freeze in the lines or other components, obstructing airflow and impairing the proper functioning of the brakes. This can create a serious safety hazard, as the inability to efficiently apply brakes can lead to accidents.

It is important to maintain the integrity and performance of the air brake system, which typically involves using dryers or filters to remove moisture from the compressed air. This helps ensure reliable brake operation in various weather conditions, particularly in colder climates where the risk of freezing is heightened.