Operation & SafetyCâu 47 / 60
What is brake lag in an air brake system?
a.The short delay before the brakes work after you press the pedal, because air must travel through the lines
b.The time it takes to build air pressure at startup
c.The distance the vehicle travels before you see a hazard
d.The time the compressor takes to cut out
Giải thích
Brake lag is the time it takes, after you push the brake pedal, for the air to flow through the lines and actually apply the brakes. On air brakes this adds roughly half a second of travel that hydraulic brakes do not have. Drivers must account for this extra distance when stopping.
Luyện miễn phí toàn bộ 60 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Why does an empty truck sometimes take longer to stop than a fully loaded one?
- The total stopping distance for an air brake vehicle includes which of the following?
- What is brake fade?
- What is the most important thing to do to control your speed on a long, steep downgrade?
- What is the proper braking technique (snub braking) on a long downgrade?
- On a vehicle with air brakes, when is the proper time to release the brakes during snub braking on a downgrade?
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