Driving SafelyCâu 45 / 60
What is off-tracking (or cheating) in a combination vehicle?
a.The rear wheels follow a shorter path than the front wheels when turning, tracking inside the turn
b.The trailer swings wider than the tractor
c.The tires lose air pressure
d.The trailer brakes lock up
Giải thích
Off-tracking is when the rear trailer wheels follow a shorter, inside path compared to the front wheels during a turn. The longer the vehicle, the more the rear wheels off-track. Drivers must swing wider and steer the front of the tractor farther out so the trailer wheels clear curbs and obstacles.
Luyện miễn phí toàn bộ 60 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- To make a right turn with a combination vehicle and avoid the trailer wheels hitting the curb, you should:
- What is the main cause of trailer rollover in combination vehicles?
- 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?
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Đội Ngũ Biên Tập PrepPass · Đối chiếu với CDL Combination Vehicles Knowledge Test · Quy trình kiểm tra