Off-tracking or cheating causes which of these to follow the wider path while making a turn?
Answer: C
Tractor with two 27-feet trailers.
When a vehicle makes a turn the arc (path) taken by each wheel is different. The path is less noticeable on short passenger vehicles while being much more pronounced on long vehicles. Off-tracking is a method to ensure that the path of the rear wheels of the trailer can clear the turn of any obstacles that may be near, such as vehicles sitting at an intersection. The wheels of the furthest trailer will off-track the greatest amount.
All choices
- A53-feet bobtail.
- BTractor towing a 45-feet trailer.
- CTractor with two 27-feet trailers.
Why the other answers are wrong
A. 53-feet bobtail.
A 53-feet bobtail does not have multiple trailers to cause off-tracking.
B. Tractor towing a 45-feet trailer.
A tractor towing a single 45-feet trailer has less off-tracking than a tractor with two trailers.
CDL Combination Vehicles Test Info
Questions on Exam
20
Passing Score
80%
Time Limit
Typically 30 minutes; varies by testing location
The Combination Vehicles test content is federally standardized, so this question applies in every state. Age limits, fees, and testing procedures do vary — check your state's CDL requirements.
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More CDL Combination Vehicles Practice Questions
- Which part of the kingpin should the locking jaw close around?
- Where should the tractor be when you inspect the landing gear after uncoupling the trailer?
- After you have coupled the trailer you should raise the landing gear by first using:
- After you lock the kingpin into the fifth wheel, you should check the connection by:
- Why should you be sure that the fifth wheel plate is greased as required?