Wisconsin CDL Double/Triple Trailers Practice Test

During Wisconsin doubles/triples operation, which choice best matches official guidance on air-flow test?

briefly open the rear shut-off valve to listen or feel for air, then close it check only the fuel gauge pump the clutch raise landing gear

briefly open the rear shut-off valve to listen or feel for air, then close it

Access more questions from this quiz

Continue to Wisconsin CDL Double/Triple Trailers Practice Test for more practice questions and the full quiz experience.