CDL HW | Commercial Driver License Test 2022-2023

CDL HW | Commercial Driver License Test 2022-

2023

A commercial motor vehicle's (CMV's) engine controls are used for: *

10 points

A. safely operate your vehicle.

B. start up and shut down the vehicle's engine.

C. warn you when pressures or temperatures reach a dangerous level.

D. help you steer, accelerate, brake, and park your CMV.

start up and shut down the vehicle's engine

If your truck has a(n) _____, you must first turn the engine key to the 'on' position before engaging it. *

10 points

A. starter button

B. engine brake

C. clutch button

D. cruise control

starter button

Which clutch position is required to start the engine or shift gears? *

10 points

A. Engaged

B. Free play

C. Disengaged

D. Clutch brake

Disengaged

Which of the following is a yellow, diamond-shaped knob that allows you to activate the parking brake? *

10 points

A. Parking brake control valve

B. Trailer air supply valve

C. Foot brake control valve

D. Trailer brake hand-control valve

Parking brake control valve

Secondary vehicle controls: *

10 points

A. provide backup functionality to the primary controls.

B. shut down the vehicle's engine in an emergency.

C. assist you in a safely operating your vehicle.

D. all of the above.

assist you in a safely operating your vehicle

If your CMV has a _____, the Federal Motor Carrier Safety Regulations (FMCSR) say you must use it. *

10 points

A. seat heater

B. cruise control

C. seat belt

D. fog lamps

seat belt

Which vehicle instrument measures the voltage in a vehicle's electrical system? *

10 points

A. Voltmeter

B. Exhaust pyrometer

C. Ammeter

D. Both A and C

Voltmeter

What is a normal operating range for a CMV's oil pressure gauge? *

10 points

A. 20-45 psi

B. 30-50 psi

C. 40-65 psi

D. 50-70 psi

30-50 psi

Which of the following warning devices help you to know when exhaust temperatures are abnormal? *

10 points

A. Pyrometer warning light

B. Coolant temperature warning light

C. Differential warning light

D. Both A and B

Pyrometer warning light

Which of the following warning devices indicates there is inadequate pressure in the air brake system? *

10 points

A. Coolant level alarm

B. Oil level alarm

C. Low pressure warning alarm/light

D. Oil pressure warning light

Low pressure warning alarm/light

In order to put a commercial motor vehicle on the road, you must first: *

10 points

A. complete and sign a DVIR.

B. ask a mechanic about the vehicle's condition.

C. conduct a thorough pre-trip inspection.

D. perform a short test drive to verify safe operation.

complete and sign a DVIR.

Before you inspect the engine compartment and front axle components: *

10 points

A. verify the parking brakes have been set.

B. put the vehicle's keys in the ignition, depress the clutch, and start the engine.

C. remove the chocks from the wheels.

D. close the hood.

verify the parking brakes have been set.

What is the minimum tread depth for the steer-tire? *

10 points

A. 2/32 inch

B. 4/32 inch

C. 6/32 inch

D. 8/32 inch

. 4/32 inch

What is the only circumstance you are not required to inspect your cargo and load securing devices? *

10 points

A. If your load is sealed and you have been ordered not to open it.

B. If your vehicle is loaded in a way that makes cargo inspections impossible