CDL Practice Test (General Knowledge) ( Updated 2024 ) Complete Questions & Answers (Solved) 100% Correct
- How long should the mud flaps on a truck and trailer be?
Answer: Long enough to reach within 8 in of the roadway
- If you're driving in town, how far will your recommended 12-15 second planning ahead
measure in distance?
Answer: about a single block
- A bridge formula restricts the axle weight for axles which...
Answer: are closer together
- How soon should oil pressure rise to a normal level after starting the engine?
Answer: within seconds
- If starting from a standstill on a hill, what's the best way to get moving?
Answer: -partly engage the clutch before you take your right foot off the brake
- Driving on a highway, it is recommended that you monitor a quarter of a mile ahead. At
highway speeds, this equates to...?
Answer: 12-15 sec
- Descending a long downgrade, which of these will help you if you have brake difficulties?
Answer:
-escape ramp -a turn going uphill -an open field (all of the above)
- If you are tested and found to have a blood alcohol concentration below 0.04% but above
0.0, what will happen?
Answer: You will be taken out of service for 24 hrs
- Federal, State, and local regulations concerning cargo weight, securement, and cover vary
widely. Which should you obey?
Answer: all of them
- What are two of the most common causes of tire fires?
Answer: Under-inflation and duals that touch
- The minimum number of tiedowns on a load is...?
Answer: 2
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- If your load protrudes more than 4 feet beyond the rear of your vehicle, which of these do
you need in Texas?
Answer:
-a red flag at least 12X12 in (day) -a special permit -a burning red visible light (night) (all of the above)
- If an accident victim is bleeding heavily, what should you do to help?
Answer: apply direct pressure to the wound
- If there is an obstacle in the road and you have a choice of directions around it, why
should you choose to go right?
Answer: it will avoid driving into oncoming traffic
- How can you avoid temporary night blindness from other drivers' lights?-
Answer: look at the sidelines instead
- If you have to stop on a divided highway, how should you place your warning triangles?
Answer: At 10ft, 100ft and 200ft , all facing approaching traffic
- How should you position your trailer to check the alignment of your mirrors?
Answer: straight with your cab
- If backing with a tractor trailer, turning the wheel left will do what?
Answer: turn the cab left and the trailer right
- If you have to stop on an undivided road, how should you set out your emergency
warning triangles?Answer: One front and one rear, and one nearer the vehicle toward traffic in the same lane
- If a railroad crossing has a steep approach/exit, what should you be very aware of?
Answer: you could get hung up on the track
- When descending a hill in the state of Texas, what is it unlawful for you to do?
Answer: to coast down the hill
- If you hit a thick fog bank, what's the best thing to do?
Answer: stop in a safe space and wait for it to pass
- If you have a B:C type fire extinguisher, what is it suitable for dealing with?
Answer: electrical fires and burning liquids
- What should you be aware of when passing a motorcycle?
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Answer: that your vehicle can throw a motorcycle off course