ELDT - Entry Level Driver Training Vehicle Systems and Malfunctions Questions and Answers 2

Question 1

What should a CMV driver do if the low air pressure warning activates while driving?

Accepted Answer

Immediately pull over safely and stop; do not drive until the air system is repaired

Answer

Continue driving to the next truck stop

Answer

Pump the brake pedal to build pressure

Answer

Turn off the warning buzzer and monitor the gauge

Question 2

What is the function of the governor in an air brake system?

Accepted Answer

It controls when the air compressor pumps air into the storage tanks

Answer

It controls the vehicle speed

Answer

It regulates fuel flow to the engine

Answer

It controls the trailer brake timing

Question 3

What causes brake fade and how can it be prevented?

Accepted Answer

Overheating the brakes from continuous use; prevented by proper gear selection on downgrades

Answer

Using brakes too infrequently; prevented by braking harder

Answer

Cold temperatures shrinking brake components; prevented by warming up brakes

Answer

Wet brakes losing friction; prevented by driving faster to dry them

Question 4

What should you do if your engine overheats while driving?

Accepted Answer

Pull over safely, keep the engine idling to circulate coolant, and investigate the cause

Answer

Immediately shut off the engine

Answer

Add cold water to the hot radiator immediately

Answer

Increase speed to get more air flowing over the radiator

Question 5

What is the function of the slack adjuster in the air brake system?

Accepted Answer

It converts the push rod movement into the rotational force needed to apply the brake shoes

Answer

It adjusts the air pressure in the tanks

Answer

It controls the timing of brake application between axles

Answer

It adjusts the ride height of the vehicle

Question 6

What should a driver do if they experience a tire blowout on the highway?

Accepted Answer

Grip the steering wheel firmly, stay off the brakes, and gradually slow down before pulling over

Answer

Brake hard immediately

Answer

Swerve to the shoulder immediately

Answer

Accelerate to maintain control