What is a common consequence of low air pressure in an air brake system?

Answer: B — Increased braking distance

In an air brake system, low air pressure is detrimental because it affects the ability of the brakes to function effectively. Brakes rely on sufficient air pressure to engage and create the necessary force to stop the vehicle. When air pressure is low, the brakes may not apply fully, leading to insufficient braking force. Consequently, this lack of effective braking results in a longer stopping distance, as the vehicle requires more distance to come to a complete stop. Understanding this concept is crucial for safe vehicle operation, as low air pressure can pose significant risks, particularly when driving heavy vehicles where longer stopping distances can lead to dangerous situations. Therefore, ensuring that the air brake system maintains adequate air pressure is essential for optimal performance and safety on the road.