Driving SafelyCâu 47 / 60
What is the main cause of trailer rollover in combination vehicles?
a.Driving too slowly
b.Underinflated tires only
c.Turning too fast for the load's center of gravity, especially with a high or unbalanced load
d.Braking in a straight line
Giải thích
Most trailer rollovers happen when a driver takes a curve or ramp too fast for the load, and the high center of gravity tips the trailer. Loading cargo low and centered lowers the center of gravity and reduces rollover risk. Slowing down before curves and ramps is the best prevention.
Luyện miễn phí toàn bộ 60 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- What is off-tracking (or cheating) in a combination vehicle?
- To make a right turn with a combination vehicle and avoid the trailer wheels hitting the curb, you should:
- How can you reduce the risk of rollover when loading a trailer?
- What causes a trailer to swing out and jackknife (trailer skid)?
- If your trailer begins to swing out in a jackknife, what should you generally do?
- Why do combination vehicles need a longer following distance than smaller vehicles?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với CDL Combination Vehicles Knowledge Test · Quy trình kiểm tra