Why is it especially important to keep a consistent, moderate speed when pulling triples through a series of curves, rather than varying speed a lot?
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Correct answer to question 61 (Doubles/Triples): Repeated speeding up and slowing down through curves can build up sway in the rear trailers rather than letting it settle
Why
Each speed change adds another disturbance for the rear trailers to react to, and stacking those changes through a series of curves can build sway rather than letting the combination settle.
Updated: November 2026