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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?

Between 120 PSI and 140 PSI (B) Signup and view all the answers

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

Three reflective triangles (A) Signup and view all the answers

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

Six spare fuses (A) Signup and view all the answers

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

$15$ MPH (C) 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?

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

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

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

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

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) Signup and view all the answers

What is the first step for the air brake check?

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

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

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

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

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

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

The test is complete (C) Signup and view all the answers

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