Operation & SafetyCâu 57 / 60
What is the effect of anti-lock braking systems (ABS) on air brake vehicles?
a.They shorten the vehicle's normal stopping distance dramatically
b.They replace the need for the parking brake
c.They help keep the wheels from locking up during hard braking so you can maintain steering control
d.They eliminate the need to check air pressure
Giải thích
ABS helps prevent the wheels from locking during hard or emergency braking, which helps you keep control and steer. ABS does not necessarily shorten stopping distance or let you drive faster; it is a system to help you retain control. You still brake normally, and the ABS works only when needed.
Luyện miễn phí toàn bộ 60 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- What should you do first if the low air pressure warning comes on while driving?
- When stopping normally with a vehicle equipped with air brakes, how should you apply the brakes?
- Why should you not fan (pump) the brakes on and off on a long downgrade with standard air brakes?
- To make sure you can stop in time, how should you adjust following distance with air brakes at higher speeds?
- Before starting down a long grade, when should you select the proper gear?
- What is a proper way to test the trailer service brakes while stopped or moving slowly?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với CDL Air Brakes Knowledge Test · Quy trình kiểm tra