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Why should you avoid sudden steering inputs even at moderate speeds with doubles?
- A.Doubles cannot be steered suddenly at any speed legally
- B.Sudden steering only affects the tractor paint
- C.Amplification makes the rear trailer swing much more than your steering input suggests
- D.Doubles have no amplification
Correct answer
C. Amplification makes the rear trailer swing much more than your steering input suggests
Why
With doubles the rear trailer multiplies your input, commonly cited around twice or more. A steering move that feels small in the cab can be a large swing at the back.
Manual topic: Combination Vehicles - Rollover and Rearward Amplification · From the Combination Vehicles practice bank (CV-078).