CDL Practice Test


As you prepare to obtain your CDL in Texas, you can use this site as a guide for practicing common test questions. Rules and regulations covered on these practice tests for a CDL are based on questions from the Texas TxDPS CDL manual. You can take these practice tests as often as you like on your computer or mobile device, and all the tests on this site are 100% free. There is a 50-minute time limit. You may not go back once you answer a question. Click the "Start Test" button below to begin.

1 / 40

You should keep a minimum of ____between another vehicle and the double trailer with 100 ft truck driving at 30 mph.

2 / 40

Select the accurate statement in regards to rolling up the landing gear to complete the coupling process.

3 / 40

Select the true statement in regards to an application pressure gauge:

4 / 40

A placarded vehicle must have at least ___ placards?

5 / 40

What should you check for when inspecting a converter dolly?

6 / 40

Overhead inside mirror is used to:

7 / 40

The cause of almost half of all truck driver deaths are:

8 / 40

A driver that hauls hazardous materials must attend training every:

9 / 40

What are slack adjusters?

10 / 40

Select the true statement in regards to crossing your air lines on a new trailer with spring brakes

11 / 40

The amount of liquid you can carry depends on:

12 / 40

What is most likely to occur when driving a set of doubles and a set of trailer wheels goes into a skid?

13 / 40

When does stab braking occur?

14 / 40

There should be ___space between the upper and lower fifth wheel after coupling.

15 / 40

What is the main difference between a portable tank and a cargo tank?

16 / 40

What is the earliest way to notice a trailer skid?

17 / 40

There must be a hazardous materials identification number on the ______ and on the ______.

18 / 40

When transporting hazardous loads, you must check the tires at least:

19 / 40

The golden rule for school buses when approaching and crossing railroad tracks is:

20 / 40

When transporting both hazardous and non hazardous materials, your bills must:

21 / 40

The two other places where the hazardous identification number must appear are:

22 / 40

What should you do if you start a trailer skid?

23 / 40

How often should you check the cargo you are transporting?

24 / 40

Which of the following statements about "Radioactive" labels is true?

25 / 40

Select the statement that tells you how you can check the low pressure warning signal.

26 / 40

If you have to swerve to avoid a hazard, it's important to:

27 / 40

When you discharge an unruly passenger, you must choose a place that is:

28 / 40

What kind of surge occurs with baffles?

29 / 40

What can side to side surge cause?

30 / 40

Which of the following statements is FALSE?

31 / 40

When does your vehicle's single brake system need an adjustment?

32 / 40

Why should you use chocks when parking a trailer without spring brakes?

33 / 40

How much space should there be between the lower and upper fifth wheel?

34 / 40

How do you know when your brakes are fading?

35 / 40

Select the factor that has no effect on how much liquid you can carry:

36 / 40

What will happen should a driver cross the air lines when hooking up the an older trailer?

37 / 40

How should the pintle hook be when backing a dolly under the second trailer?

38 / 40

You should check that the _____are secure, caps are on tight, and is not leaking.

39 / 40

The trailer height is correct for connecting a converter dolly to a second trailer when:

40 / 40

Select the vehicle that off-tracks the most.

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CDL Category Practice Tests

CDL Practice Test

How To Get A texas Commercial Drivers License

To be eligible for a CDL in Texas, applicants must meet the following age eligibility requirements.

  • Be at least 18 years old to operate a commercial vehicle intrastate (within Texas only).
  • Be at least 21 years old to operate a commercial vehicle interstate (outside of Texas).

Texas CDL applicants must be medically certified that they are fit enough to operate a commercial vehicle and pass a vision test. Applicants are required to submit the following documents.

  • (Form CDL-4) Interstate Driver Certification
  • (Form CDL-5) Intrastate Driver Certification
  • (Form CDL-10) Certificate of Physical Exemption 49 CFR Part 391/390

Some applicants may be required to submit a Medical Examiner’s Certificate. Drivers who have had their licenses revoked, suspended, denied or canceled are not eligible for a CDL in Texas. Applicants can be disqualified for having multiple licenses.

Texas CDL Endorsements

  • H – Hazmat Vehicles
  • N – Tank Vehicles
  • P – Passenger Vehicles
  • S – School Bus
  • T – Double or Triple Trailer
  • X – Combination Tank Vehicles and Hazmat Vehicles

Hit the Open Road

texas CDL License Test Tips

All Texas CDL applicants must pass the general knowledge test prior to taking the skills test. This test consists of 50 questions. To pass the Texas CDL test, applicants must score 80 percent or higher. Applicants who require additional endorsements must pass additional tests and pay the required fees.  The Texas skills test can be taken 14 days after applicants pass the knowledge test. It includes a pre-trip vehicle inspection, basic control skills and on-road driving. Applicants must pass each section.

Military veterans and current military members can apply to have the skills exam waived if they meet the requirements. To qualify for a waiver, applicants must be currently enlisted in the military and:

  • Possess a valid Texas driver’s license.
  • Have at least 2 years of military truck driving experience. The military vehicle must be similar to the commercial motor vehicle.
  • Have been honorably discharged from the military within the past 12 months.
  • Submit (Form CDL-ST WVR) Application for Military Skills Test Waiver signed by your commanding officer.

Additional Information

Information on the Texas Department of Public Safety

The Texas Department of Public Safety administers CDL license requirements in Texas. To get more information contact them via:

Website: http://www.dps.texas.gov/DriverLicense/CommercialLicense.htm

Phone: 512.424.2000


Additional Texas CDL Helpful Links

Please use the links below to access Texas CDL testing resources and to learn more about practice driving tests for the state of Texas.