Practice question

Which statement is correct about speed, space, downgrades, and clearance?

Coast in neutral on downgrades
Ignore it if the tractor starts normally
Use the trailer hand valve as the main solution
Combination vehicles need extra following distance, early speed control on grades and curves, and route awareness for overhead clearance.

Answer: D — Combination vehicles need extra following distance, early speed control on grades and curves, and route awareness for overhead clearance.

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