Why is it important that compressed air used for brakes stay free of significant contamination, more so than air used for other vehicle systems?

Pick an answer

1. It only matters for air used in tires, not brakes
2. Brake air quality standards are no stricter than those for the cabin air vents or the horn
3. Brake performance depends directly on how reliably that air can move through valves and chambers on demand
4. Contamination affects only accessory systems like the horn, never the brakes

Correct!

Not quite. The correct answer is highlighted.