Practice question

What does an air leak greater than the NFPA/FMCSA-allowed rate at the trailer service line typically indicate during pre-trip?

  1. Normal operation
  2. An out-of-service condition requiring repair before use
  3. A reason to top off air pressure manually
  4. A signal to drive immediately to a service station

Answer: B — An out-of-service condition requiring repair before use

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