Why is it important to know which parts of the air brake system exhaust air?
- Because it can be dangerous ✓
- In case anyone ever asks
- Because you may need to make repairs
- So you won't be surprised
Answer: A. Because it can be dangerous
Knowing the exhaust points matters because compressed air from the air brake system can be dangerous.
Why this is the answer
The air brake handbook says compressed air can be hazardous when it exhausts from the vehicle. It leaves at high speed and carries moisture, oil, dirt and dust, which can harm the eyes and hearing of anyone in its path. Debris can also spray up from the ground. Being familiar with the exhaust locations helps you stay out of that direct path.
Why the other answers are wrong
- B. In case anyone ever asks — Knowing the exhaust points in case someone asks does not address the hazard described in the handbook.
- C. Because you may need to make repairs — The handbook gives personal safety around exhausting air as the reason, not a need to make repairs.
- D. So you won't be surprised — Avoiding surprise is too vague; the handbook's concern is staying clear of air that can injure eyes or hearing.
Remember it
Picture the air blasting out at each exhaust point and keep your face and ears out of that line.