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After coupling a set of doubles, why is a slow, careful first few minutes of driving wise?
- A.It is only a tradition with no practical purpose
- B.The first minutes are when the set is legally not yet coupled
- C.It lets you feel and see in the mirrors whether both trailers track properly and whether any coupling or brake problem shows up before you reach speed
- D.Driving slowly at first warms the gladhand seals
Correct answer
C. It lets you feel and see in the mirrors whether both trailers track properly and whether any coupling or brake problem shows up before you reach speed
Why
Problems with a fresh set, a dragging brake, a trailer tracking oddly, a connection working loose, usually announce themselves early and quietly. Catching them at low speed in the mirrors is far better than meeting them at highway speed.
Manual topic: Combination Vehicles - Doubles and Triples · From the Combination Vehicles practice bank (CV-235).