Where should the tractor be when you inspect the landing gear after uncoupling the trailer?
Answer: B
With the tractor frame under the trailer.
Steps 7 through 9. Stop with the tractor frame under the trailer. Place the transmission in neutral and set the parking brake. Exit the tractor and inspect the landing gear to ensure it has not failed nor has it sunk into the ground.
All choices
- AWith the fifth wheel directly beneath the kingpin.
- BWith the tractor frame under the trailer.
- CCompletely cleared from the trailer.
Why the other answers are wrong
A. With the fifth wheel directly beneath the kingpin.
Choice A is wrong because the tractor should be under the trailer frame, not just with the fifth wheel beneath the kingpin.
C. Completely cleared from the trailer.
Choice C is wrong because the tractor must remain under the trailer to safely inspect the landing gear, not completely clear of it.
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
- 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?
- The combination of which two things will greatly reduce the likelihood of a rollover?
- You are driving a combination vehicle when the trailer breaks away, pulling apart both air lines. You expect the trailer brakes to come on and:
- Which statement is true of turning while hauling a long trailer combination.