14 Questions
At what PSI did the low air warning light come on during the Air Warning Devices Test?
55 PSI
What PSI reading on the air gauge indicates that the combination vehicle passed the Air Warning Devices Test?
60 PSI
At what PSI did both protection valves pop out during the Emergency Brake Test?
30 PSI
When should the Air Governor cut off according to the Safety Start procedure?
Between 120 PSI and 140 PSI
How many reflective triangles should be present in the vehicle according to the Emergency Equipment checklist?
Three reflective triangles
How many spare fuses should be in the vehicle according to the Emergency Equipment checklist?
Six spare fuses
What should be the maximum speed when performing the Service Brake Check?
$15$ MPH
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
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
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
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
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
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
What should be done after pressing both tractor and trailer protection valves during the air brake check?
The test is complete
Test your knowledge of the pre-operation checks for a truck. Learn about manual tasks to perform before driving and the lights and air brake checks required for safety.
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