CDL Practice Tests: Dominate The CDL Exam!

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Question #110 (1 of 10)

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Crashes will double if drivers react how much slower?

  • 2 seconds
  • 5 seconds
  • 3 seconds
  • 1/2 second
If drivers react a half second slower because of distractions, crashes double.
This is an important and incredible stat. Think about that. With an additional delay of only 1/2 second of reaction time, the number of crashes will double.
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Question #733 (2 of 10)

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When banding paper rolls with eyes vertical, you should:

  • Spread rolls apart from each other.
  • Apply bands loosely.
  • Secure bands with tape, hangers, or other means.
  • All of these are necessary.

Banding

If paper rolls are banded together:
  • Place rolls tightly against each other to form a stable group.
  • Apply bands tightly.
  • Secure bands with tape, hangers, or other means so that the bands cannot fall off the rolls or slide down to the deck.
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Question #669 (3 of 10)

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Based on the following figures, how much fuel can you legally add while remaining legal on the drive axles?

Percentage of fuel weight to drive axles: 30%
Weight Before Fueling: Steer: 11,275, drives: 33,750, gross: 77,220

  • 88.5 gallons of fuel
  • 110 gallons of fuel
  • 112.75 gallons of fuel
  • 104.13 gallons of fuel
Once you know your current axle weights and the percentage of fuel weight that goes on the drive axles, you can use this formula to calculate the amount of fuel you can take on:

We know that 30% of the weight of fuel will go to the drive axles and you have 250 pounds you can add to the weight of the drive axles and remain legal. So plugging these numbers into the formula, you get:

250/30 = 8.33
8.33x100 = 833
833/8 = 104.13 gallons of fuel you can add
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Question #726 (4 of 10)

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Option #3 for securing metal coils transported with eyes lengthwise includes all of the following except:

  • Attaching at least one tiedown over the top of the coil near the front of the coil.
  • Attaching at least one tiedown over the top of the coil near the rear of the coil.
  • Attaching at least two tiedowns through the center of the coil.
  • Using blocking or friction mats to prevent forward movement.
Tiedowns, Single Coil Option #3

Option #3 is the same as Options #1 and #2, except that the two tiedowns that attach through the eye of the coil are replaced with two tiedowns that pass over the front and the rear of the coil.

Attach at least one tiedown over the top of the coil near the front of the coil.

Attach at least one tiedown over the top of the coil near the rear of the coil.

Use blocking or friction mats to prevent forward movement.

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Question #565 (5 of 10)

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There are four duty types you can log in your logbook. What are they?

  • Driving, off duty, personal time, break
  • Off duty, sleeper berth, on duty, and driving
  • Off duty, on duty, driving, and break
  • Break, on duty, driving, off duty

There are four types of duty status you can log in your logbook:

  • Off Duty
  • Sleeper Berth
  • On Duty (not driving)
  • Driving
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Question #389 (6 of 10)

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Shippers put _________ hazard warning labels on most hazardous materials packages. These labels inform others of the hazard.

  • Octagon
  • Diamond-shaped
  • Square
  • Round
Shippers put diamond-shaped hazard warning labels on most hazardous materials packages. These labels inform others of the hazard.
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Question #752 (7 of 10)

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When securing concrete pipe with a diameter of more than 45 inches loaded crosswise, how many tiedowns are required through each pipe at minimum?

  • It depends on the weight of the pipe.
  • 3
  • 1
  • 2
Requirements for securing the pipe

Secure each pipe with tiedowns through the pipe.

Run at least one tiedown through each pipe in the front half of the load. This includes the middle one if there are an odd number. The tiedown must run rearward at an angle not more than 45° with the horizontal when viewed from the side of the vehicle, whenever practicable.

Run at least one tiedown through each pipe in the rear half of the load. The tiedown must run forward at an angle not more than 45° with the horizontal when viewed from the side of the vehicle, whenever practicable. This holds each pipe firmly in contact with adjacent pipe.

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Question #252 (8 of 10)

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In an air brake system, what is a wig-wag?

  • It indicates your brakes linings have worn thin and need replacement
  • It's a device that helps keep the gladhands in place when connecting the air lines to the trailer
  • It drops a mechanical arm into your view when the pressure in the system drops below 60 psi.
  • It adjusts the brakes on the trailer by sliding the adjustment arm back and forth

Another type of warning is the “wig wag.” This device drops a mechanical arm into your view when the pressure in the system drops below 60 psi. An automatic wig wag will rise out of your view when the pressure in the system goes above 60 psi. The manual reset type must be placed in the “out of view” position manually. It will not stay in place until the pressure in the system is above 60 psi.

You will never see one of these in a modern tractor-trailer, but they may ask about it on the test. I remember our school buses having these when I was a kid (in the 1970's)
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Question #705 (9 of 10)

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How many tiedowns are required on a stack of shortwood loaded crosswise?

  • 2
  • It depends on the weight
  • 3
  • 1
Tiedowns requirements

Use two tiedowns to secure one stack of shortwood loaded crosswise.

Attach the tiedowns to the vehicle frame at the front and rear of the load.

Position tiedowns approximately 1/3 and 2/3 of the length of the logs.

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Question #159 (10 of 10)

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How can you tell if your ABS system has malfunctioned?

  • The tires refuse to lock up under hard braking
  • The ABS light on the rear of the trailer goes out
  • The ABS light on the dash goes out while you are driving, you may have lost ABS
  • The lamp stays on after the bulb check or goes on once you are underway, you may have lost ABS
If the lamp stays on after the bulb check or goes on once you are underway, you may have lost ABS control.
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CDL Practice Tests

Our CDL practice tests are designed to help test your knowledge of the CDL Manual and sharpen your skills for taking the CDL permit and endorsement exams. They are not designed to teach you the knowledge necessary to pass the exams. Please do not try to memorize CDL practice tests in order to get your CDL. There's a better way.

Our High Road CDL Training Program is by far the easiest and most effective way to learn the materials necessary for passing your written CDL exams and preparing for a great start to your career. We strongly suggest using the High Road (which is 100% free!) to learn the CDL manual before using our CDL practice questions to test your knowledge.

How to Pass CDL Permit Test the First Time

The Class A CDL permit exam consists of a multiple choice test covering 20 different areas related to commercial driving. To prepare for this test, it is important to do practice tests beforehand. Knowing your personal study habits, getting enough rest, and eating a healthy breakfast will also set you up for success.

Tips For Passing the Commercial Driver's License (CDL) Permit Test

  • Practice Makes Perfect: The best way to both mentally and physically prepare for the written exam is to take practice tests. Start out with open-book tests and gradually work your way up to giving yourself a time limit. Finally, before the big day, take a practice exam as if it were the real thing without any help. This will give you a good indication of how well you understand the material.
  • Understand Instead of Memorize: Memorizing information can be helpful for the written exam, but the key to being fully prepared is to understand the material rather than just memorizing it. Understanding the material will allow you to answer questions correctly no matter how they are worded.
  • Real World Applications: When struggling to understand concepts, create real-world scenarios to make the information more relevant to your life. Doing this will make it easier to remember come test time.
  • Utilize Study Strategies: Utilizing study strategies such as flashcards, songs, rhymes, and phrases can help you remember the material.
  • Be Fresh and Alert: The night before the exam, get a good night's sleep and eat a filling breakfast on the morning of the exam. This will ensure you are fresh and alert to take your exam.
  • Begin Early and Space out Your Studying: It is important to give yourself ample time before the exam to get familiar with the material and get your mind ready for the big day. Consider taking a training course online or in-person, if it's required. Shop around for a course that works best for you.
  • By following these tips, you will be well prepared for your written CDL exam and on your way to a successful career.

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