- Updated for October 2024
- Based on 2024 TX commercial driver's license manual
Free Texas CDL General Knowledge Test 2024 | TX
If you want to obtain a Commercial Driver’s License in the state of Texas, you’re going to have to pass the knowledge tests applying to your particular type of vehicle. There are various different tests, but every applicant has to pass the general knowledge test with at least an 80% score. The 50 questions below are all drawn from the very latest (revised June 2024) Texas Department of Public Safety manual. There’s a hint to help you if you’re stuck on a question, and an explanation of the answer so you won’t just know the answer, you’ll know how it applies to real life situations out on the road. Good luck and safe driving!
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FAQs
How do you obtain a CDL in Texas?
To get a CDL in Texas, first obtain a commercial learner permit (CLP) by passing knowledge tests and a vision exam. Then, complete CDL training (if desired) and pass the skills test in a vehicle class you intend to drive. Ensure you meet all medical and age requirements.
What is the cost of a CDL?
The cost for a CDL in Texas includes various fees: $25 for the knowledge test, $61 for the CDL, and additional fees for endorsements. CDL training school costs vary by program.
How long does it take to become a CDL driver?
The time to become a CDL driver in Texas varies. After obtaining a CLP, you must hold it for 14 days before taking the skills test. The duration of CDL training programs varies, typically lasting several weeks to months.
Can you take the CDL test online?
No, in Texas, the CDL skills test must be taken in person. However, some knowledge tests may be available online through third-party providers or schools.
Is CDL school mandatory?
CDL school is not mandatory in Texas, but it’s highly recommended for thorough training. Some employers may require completion of a CDL training program.
How long is a Texas CDL valid?
A Texas CDL is typically valid for 5 years. The expiration aligns with your birth date and may vary based on age and medical certification requirements.
How many tests are required for a CDL?
In Texas, obtaining a CDL requires passing multiple knowledge tests for the general CDL and any endorsements, plus a skills test that includes pre-trip inspection, basic control skills, and a road test.
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- Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
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What you need to know
What to expect on the actual TX DMV exam
questions
correct answers to pass
passing score
Helpful links
List of questions (classic view)
- Which of the following statements about an escape ramp is FALSE?
- If you are traveling at 55 mph in a 30-foot vehicle, you should leave how many seconds of following distance?
- If you are stopped by the police and refuse to submit to a chemical test for drugs or alcohol,
- Which of these describes how you should use the brake pedal on a steep downhill grade?
- While driving at night, which lights should you use as often as you can?
- You should look at least 12–15 seconds ahead. In city driving, 12–15 seconds is
- If you drive at 55 mph rather than 65 mph, you can improve your fuel economy by as much as
- In Texas, the mud flaps on a truck or trailer must reach
- In Texas, which of the following must come to a complete stop at a rural railroad crossing?
- During your pre-trip inspection, you should do which of the following inside the cab?
- If you double your speed, how much more distance will it take to brake to a stop?
- If you are confronted by an aggressive driver, what should you do?
- After your first stop, how often must you stop to check if your cargo is secure?
- Streaks of rust on a lug nut are signs that
- When passing a motorcycle, keep in mind that
- In Texas, when driving on a downgrade, you must not
- Which of these is NOT part of the basic method for shifting up?
- After you start the engine, the oil pressure should rise to normal within
- If you are towing another vehicle, the tow connection must not be longer than
- If you are pulling a trailer and a fire breaks out inside it, what should you do?
- Where should you place your warning devices if you must stop on a one-way road or divided highway at night?
- If you are going through an underpass at which the road has been repaved recently,
- How can you determine if your vehicle is equipped with an antilock braking system (ABS)?
- You should inspect wheel bearing seals for
- While driving a vehicle with dual tires, you hear a noise that sounds like a tire blowout. However, your vehicle's handling seems unaffected. What should you do?
- To avoid overloading bridges, a bridge formula restricts the axle weight for axles that
- In Texas, if your load extends more than 4 feet beyond the rear of your vehicle, you must have
- If you are found to be driving a commercial motor vehicle with your blood alcohol concentration (BAC) above zero but below 0.04%,
- Why should you be especially alert for drivers who are tourists?
- In Texas, which of the following are you not allowed to transport in an open truck?
- How many different states’ commercial driver licenses (CDLs) can you hold simultaneously?
- What are two of the most common causes of tire fires?
- What is a particular risk associated with transporting hanging meat?
- If an accident victim is bleeding heavily and no qualified professional is available, what can you do to help?
- In Texas, if you must stop on the road or the shoulder of the road in the daytime, what kind of warning devices should you use?
- The minimum tire tread depth for front tires is
- You don't want to be a distracted driver, so you
- Why should you use a helper when you are backing?
- What will help a drunk sober up?
- How many reflective warning triangles should you carry with you for emergencies?
- If you must drive off the roadway onto the shoulder to avoid a head-on collision with another vehicle, what should you do?
- In which of the following situations should you NOT sound your horn?
- If dense fog reduces visibility to near zero, what should you do?
- In Texas, the maximum weight for a single or combination vehicle including its load is
- A fire extinguisher that is rated B:C is suitable for
- If the engine is not overheated, is it completely safe to remove the radiator cap?
- Objects that are viewed in a curved (convex) mirror may appear
- How many tie-downs are required for a 17-foot load?
- How can you start moving without rolling backward?
- To obtain a CDL, you must certify that
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