LOUISIANA CDL PRACTICE TEST - GENERAL KNOWLEDGE

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The CDL general knowledge test is required to be taken by all CDL applicants. The Louisiana CDL test consists of 50 questions. To pass, you must correctly answer at least 40 questions (80%). The general knowledge test covers the contents of the Louisiana CDL Manual. All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Vehicle Inspection Test, Basic Control Skills Test, Road Test. In addition, the Class A CDL test will include questions based on the Combination Vehicles section. Take this CDL practice test now to prepare for the actual LA general knowledge test! To get your CDL, you must pass both the knowledge and skills tests. CDL knowledge tests include: General Knowledge, Passenger Transport, Air Brakes, Combination Vehicles, Hazardous Materials, Tanker Vehicles, Doubles/Triples, School Bus, Firefighter. Depending on what class of license (A, B or C) and endorsements you need, you must take one or more knowledge tests. A special endorsement is also required to drive certain types of vehicles. The following endorsements may be used with a Class A, B or C CDL: HazMat (H), Tank Vehicles (N), Tank Vehicles Transporting Hazardous Materials (X) and Passenger Transport (P). The School Bus endorsement (S) is only available for Class A or B CDL, and the Doubles/Triples endorsement (T) is only available for Class A driver's licenses.
1. Vehicle inspections:
should be performed once a week.
should not be done by the shipper.
should only be done when a vehicle defect is found.
are important because vehicle defects found during an inspection could save you problems later.
2. If your drive wheels begin to spin, you should:
use the Anti-lock Braking System.
pump the brake pedal three times.
take your foot off the accelerator.
use the parking brake.
3. When you inspect the front of your vehicle as part of the walk around inspection, you check all of the following EXCEPT:
the condition of your front axle.
the air pressure gauge.
the condition of the windshield.
the condition of the steering system.
4. Tire load is defined as:
the minimum safe weight a tire can carry at a specified pressure.
the weight transmitted to the ground by 1 tire.
the minimum tire pressure.
the maximum safe weight a tire can carry at a specified pressure.
5. Distracted driving can cause collisions. Which of the following can distract your attention while you are driving?
Listening to music.
Talking to passengers.
Driving below the speed limit.
All of the above.
6. When faced with an emergency, drivers should:
immediately drive to the nearest police station.
drive away as quickly as possible.
come to a stop if it is safe to do so.
make a U-turn and go in the opposite direction.
7. If you are being tailgated, you should:
increase your speed very gradually.
make quick changes.
turn on your taillights.
open up room in front of you.
8. Which of the following is NOT a good rule for using turn signals?
Signal well before you turn.
Cancel your signal after you have turned.
Put your turn signal on after the turn.
Signal continuously until you have completed the turn.
9. The best way to test the trailer service brakes is to:
put the handbrake on when there are no vehicles around you.
accelerate to the maximum possible speed, then apply the trailer brakes fully.
pull forward quickly, then apply the trailer brakes with your hand control.
None of the above.
10. It's very important to distribute the cargo so it is:
in the centre of the load.
piled up.
as high up as possible.
as low as possible.
 
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Frequently Asked Questions

If you are 15 or 16 years old, you must adhere to the stages of the Graduated Driver Licensing (GDL) Program:
  • Stage 1 ? for a learner’s permit, you must be at least 15 years old.
  • Stage 2 ? for an intermediate license, you must be at least 16 years old and have held the permit for 6 months.
  • Stage 3 ? for a full license (class E), you must have completed stages 1 and 2 or be at least 17 years old.

To take the Louisiana DMV written test, contact a driver education provider or the Office of Motor Vehicles. Before you go, check if your chosen Louisiana OMV offers the permit tests and the available business hours.
If you are a first time applicant, you'll need:
  • One primary document, such as a birth certificate or passport.
  • Proof of your Social Security Number.
  • An additional form of identification (e.g., Louisiana college or university ID, employment ID card, etc.).
  • Proof of residence.
If you are a minor, a parent or legal guardian must accompany you to sign the application.


If you have difficulty understanding English, you can have a translator assist you during the knowledge test. However, it is advisable to have a basic understanding of English since road signs are always in English.

It is recommended to thoroughly read the Louisiana Driver's Handbook at least three times to acquire a comprehensive understanding of the road rules. Verify your knowledge with our free practice tests or sign up for DMV Premium to access additional resources. Once you are satisfied with your score, you are ready for the exam.

The DMV written test contains 40 questions regarding road signs, safe driving practices, and road rules. All questions are multiple-choice, so be sure to carefully read them before providing your answers.

You must answer at least 32 questions correctly, and you can miss up to 8 questions to pass the test. The minimum score required to succeed in the exam is 80%. Take your time during the exam to make sure you understand the questions well.

Under the Graduated Licensing Program, teens face specific restrictions.

Drivers with a learner’s permit:
  • Must drive with a licensed adult who is at least 21 years old, or a licensed family member who is at least 18 years old.
  • Cannot use a cell phone.

Drivers with an intermediate license:
  • Are restricted from driving between 11 p.m. and 5 a.m. unless accompanied by a licensed adult who is at least 21 years old or a licensed family member who is at least 18 years old.
  • Can only transport one passenger under 21 (excluding siblings) unless supervised by a licensed adult aged 21 or older between 6 p.m. and 5 a.m.
  • Cannot use a cell phone, except for emergencies. 

If you fail your DMV written test at a driver education provider, the policies vary depending on the driving school. Some may require you to pay for a retest, while others may include multiple attempts in the course. Be sure to check the specific rules of the driving school you are attending. If you fail the permit test at the Office of Motor Vehicles, you have the opportunity to retake the exam once on the same day, provided there is enough time available.

LA CDL Practice Test

Number of questions: 50
Correct answers to pass:40
Passing score:80%
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