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

When driving normally, some drivers use the hand valve before applying the brake pedal to prevent jack knifing. Select the most appropriate response to this statement.

2 / 40

If you are already carrying 100 pounds of silver cyanide, what precautions must you take if you are given papers at a dock to carry 100 cartons of battery acid?

3 / 40

You may use DANGEROUS placards instead of separate placards for each Table 2 hazard class when:

4 / 40

You should_____when checking the slack adjusters on S-Cam brakes.

5 / 40

What keeps air in the tanks should the air compressor develop a leak?

6 / 40

A baffled tanker has:

7 / 40

The method for testing hydraulic brakes for leaks is to _____.

8 / 40

Select the true statement in regards to if a glad hand on the blue air line is missing a seal.

9 / 40

Which of the following is a reason to evacuate the school bus?

10 / 40

You should have the fifth wheel plate greased as recommened because:

11 / 40

The safety valve is usually set to open at:

12 / 40

If you are drowsy, you should _____ before you drive.

13 / 40

Which of the following would NOT be part of a standard vehicle inspection?

14 / 40

When a substance in the materials table is written in italics it means :

15 / 40

Select the true statement about converter dollies:

16 / 40

Select the true statement about tractor protection valve:

17 / 40

Which of the following statements is true about speed management?

18 / 40

At what "cut out" level does the governor stop pumping air?

19 / 40

Bus drivers must have a CDL if they drive a vehicle:

20 / 40

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

21 / 40

After deciding the type of evacuation that is necessary, the next step you must take is:

22 / 40

Which of the following is not a prohibited practice on the bus:

23 / 40

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

24 / 40

Which of the following must be closed while the bus is in motion?

25 / 40

Secure baggage and freight in ways that avoid damage and:

26 / 40

Where should the safety catch for the fifth wheel locking lever be located for coupling to be complete?

27 / 40

A vehicle placarded for Division 1.1, 1.2, or 1.3 explosives:

28 / 40

Which of the following is something the driver must watch for:

29 / 40

If you do become sleepy while driving, you should _____.

30 / 40

What is the safest way to stop unruly behavior on the bus?

31 / 40

When accelerating:

32 / 40

If a rider wants to bring a car battery or a can of gasoline or kerosene aboard your bus, you should:

33 / 40

When driving with multiple trailers, which one should be right behind the tractor?

34 / 40

When approaching a school bus stop, you should:

35 / 40

How do you check the air flow to the last trailer?

36 / 40

How do you determine if slack adjusters need to be adjusted?

37 / 40

The bus driver must accept responsibility for supervising and controlling students while on the bus route. Who is the person in charge?

38 / 40

The main reason you should pull the dolly out from under a trailer before disconnecting it from the trailer in front is:

39 / 40

If you are stopped on an incline, how can you start moving without rolling back?

40 / 40

How can you check slack adjusters?

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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.