Control & OperationCâu 69 / 120
What is off-tracking, and why does it matter in turns?
a.The trailer rides a wider path than the tractor, so you must stay left
b.The rear wheels follow a shorter path than the front wheels, so the trailer can cut across curbs, poles, or an adjacent lane
c.The vehicle drifts backward on an upgrade
d.The trailer brakes apply before the tractor brakes
Giải thích
Because the rear wheels track inside the path of the steer axle, the longer the vehicle the more the rear cuts the corner. Trailers do not swing wider than the tractor in a turn, and rollback and brake timing are separate issues.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- What does the safe-backing practice known as GOAL stand for and require?
- You are backing a trailer and it begins to drift off your intended line. What is the correct correction?
- You are making a tight right turn at an intersection in a tractor-trailer. What is the correct technique?
- You are coupling a tractor to a trailer. Which step comes immediately before backing under the trailer?
- Before backing under a trailer, how should the trailer height be set?
- You are uncoupling a trailer in a yard. Which sequence is correct?
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