CDL Practice Test: General Knowledge
This 40 question and answer CDL general knowledge practice test will help you check your understanding of the rules related to the safe operation of a semi-truck.
CDL General Knowledge Practice Test
Results
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#1. True or False: Gross Vehicle Weight (GVW) means the total weight of a single vehicle including its load.
#2. How should you know when to shift?
Engine speed and road speed is correct
#3. True or False: It is best to use low beams whenever you can.
#4. True or False: As long as the engine isn’t overheated, you can safely remove the radiator cap.
#5. True or False: The proper procedure if a tire blows out is to put the brakes on hard to stop quickly.
#6. Two causes of tire fires are ______.
under-inflated tires and duals that touch is correct
#7. True or False: When using your fire extinguisher, it is best to get as close as possible to the fire.
#8. True or False: Two ways that will help a drinker sober up are coffee and a little fresh air.
#9. For any flatbed load you must have at least ____ tie downs.
#10. What are some things you should check on the front of your vehicle when doing the walk-around inspection?
Low beams, high beams, four way flashers, turn signals is correct
#11. What is the reason that placards are used?
Communicate the risk is correct
#12. If you do become sleepy while driving, you should _____.
stop to sleep is obviously correct
#13. You downshift automatic transmissions ______.
before going down a hill is correct
#14. What is the best way to see the sides and rear of your vehicle?
#15. In safe driving, what does communicating mean?
Letting others know you are there by using turn signals, four way flashers, and horn is correct
#16. True or False: If somebody is following you too closely, you should decrease your following distance.
#17. True or False: Another driver may try to pass you on the right if you swing wide to the left before turning right.
#18. Wet brakes can cause _____.
#19. To avoid the effects that wet brakes can cause you may _____.
All of the above is correct
#20. When going down a long, steep downgrade, what factors determine your selection of a safe speed?
Total weight of the vehicle and cargo, length of the grade, steepness of the grade, road conditions, weather is correct
#21. Inspect the cargo and its securing devices again within the first ___ _____ after beginning a trip. Make any adjustments needed.
#22. True or False: Gross Combination Weight (GCW) is the total weight of a combination of vehicles NOT including the load.
#23. True or False: A low center of gravity means you are less likely to tip over when compared to a high center of gravity.
#24. True or False: You should do an after-trip inspection at the end of the trip, day, or tour of duty on each vehicle you operated.
#25. What should you look for when inspecting tires?
#26. You should do a vehicle inspection ______________ so you will learn all the steps and be less likely to forget something.
#27. Under which two special conditions should you downshift?
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