Practice question

A doubles driver hears air escaping after connecting the rear trailer but pressure still builds slowly. What should the driver do?

Find and repair the leak before operating because marginal pressure can fail under demand
Depart if pressure eventually reaches normal once
Close the rear trailer service line and continue
Use the electrical cord as a backup air source

Answer: A — Find and repair the leak before operating because marginal pressure can fail under demand

The correct answer is shown above. Try the full quiz for additional practice.