Home › CDL Practice Tests › General Knowledge Questions › Question 141
A sliding fifth wheel is moved mainly to change what?
- A.How the combination's weight is distributed between the steering axle and the drive axles
- B.The overall length of the trailer
- C.The height of the landing gear
- D.The color coding of the air lines
Correct answer
A. How the combination's weight is distributed between the steering axle and the drive axles
Why
Sliding the wheel forward puts more weight on the front axle and sliding it back shifts weight to the drives. The locks must be fully re-engaged and checked afterward, because a wheel that slides under way can change handling without warning.
Manual topic: Combination Vehicles - Fifth Wheel · From the General Knowledge practice bank (GK-141).