Truck Pre-Operation Check Quiz
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Questions and Answers

At what PSI did the low air warning light come on during the Air Warning Devices Test?

  • 55 PSI (correct)
  • 50 PSI
  • 40 PSI
  • 45 PSI

What PSI reading on the air gauge indicates that the combination vehicle passed the Air Warning Devices Test?

  • 50 PSI
  • 45 PSI
  • 55 PSI
  • 60 PSI (correct)

At what PSI did both protection valves pop out during the Emergency Brake Test?

  • 30 PSI (correct)
  • 20 PSI
  • 35 PSI
  • 25 PSI

When should the Air Governor cut off according to the Safety Start procedure?

<p>Between 120 PSI and 140 PSI (B)</p> Signup and view all the answers

How many reflective triangles should be present in the vehicle according to the Emergency Equipment checklist?

<p>Three reflective triangles (A)</p> Signup and view all the answers

How many spare fuses should be in the vehicle according to the Emergency Equipment checklist?

<p>Six spare fuses (A)</p> Signup and view all the answers

What should be the maximum speed when performing the Service Brake Check?

<p>$15$ MPH (C)</p> Signup and view all the answers

What does it indicate if the low air warning light stays on at or above 55 PSI according to the text?

<p>There is a failure in the low air warning system (C)</p> Signup and view all the answers

What is the correct procedure for checking the air governor cut-off?

<p>Pump the service brakes to lose air below 90 PSI, and the air governor should cut out between 120 and 140 PSI (A)</p> Signup and view all the answers

What is the correct procedure for the air leakage rate test?

<p>Press and hold down the service brake, ensuring that the applied pressure gauge must read 40 PSI, and the truck cannot lose more than 4 PSI in 1 minute (C)</p> Signup and view all the answers

What is the first step for the air brake check?

<p>Depress the clutch, set parking brakes, ensure gear shifter is in neutral, turn key on, and start the engine (A)</p> Signup and view all the answers

What should be checked at the front of the truck during the lights operations check?

<p>Headlights low beams, headlights high beams, left/right turn signal, clearance lights, emergency flashers (A)</p> Signup and view all the answers

What should be checked at the rear of the trailer during the lights operations check?

<p>Tail-lights, brake lights, left/right turn signal, emergency flashers (C)</p> Signup and view all the answers

What should be done after pressing both tractor and trailer protection valves during the air brake check?

<p>The test is complete (C)</p> Signup and view all the answers

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