Louisiana Class A CDL Practice Test (LA) 8

5 out of 5 (37 votes)
80% Passing score
50 Questions
10 Mistakes allowed
Get ready to elevate your driving skills with our Louisiana CDL Class A Practice Test - the eighth in our series, tailored to help you ace your 2026 DMV permit test. This practice test is a crucial step in your preparation, featuring 50 comprehensive questions designed to test your knowledge and readiness for the real Class A CDL permit test. What sets our Louisiana CDL practice test apart? It's all in the details and the approach. Unlike the actual CDL DMV test, our practice test isn't timed. This means you can take your time to understand each question thoroughly, an advantage that can significantly boost your learning and retention. Take a moment to consider each scenario, reflect on the best practices, and truly absorb the information - a luxury you won't have during the real Louisiana permit test. Our question pool is diverse, covering all necessary topics to ensure you're well-prepared. From pre-trip vehicle inspection to mastering gear shifts, and understanding the intricacies of controlling a large vehicle on steep downgrades - we've got it all. Plus, our focus on real-world situations like communicating with other drivers and speed control adds an extra layer of practicality to your learning. Another key feature? The resemblance of our CDL test questions to those you'll find in the actual Louisiana DMV general knowledge test. This similarity is not just about the content but extends to the format as well. It's a strategic approach to make you comfortable and familiar with the style and nature of questions you'll face, reducing any surprises on test day. So, dive into our Louisiana CDL Class A Practice Test. It's more than just a test; it's a comprehensive learning tool designed to sharpen your skills and boost your confidence, ensuring you're not just prepared, but ready to excel in your Class A CDL test in 2026!
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Sample Louisiana CDL Test Questions - General Knowledge

Question 1

Coffee and fresh air can speed up the body's removal of alcohol.

  1. A TRUE
  2. B FALSE

Correct answer: B – FALSE

Only time lowers the amount of alcohol in the body. Coffee, fresh air, and cold showers may make someone feel more awake, but they do not accelerate the liver's fixed processing rate. Drinking faster than the body can process alcohol increases impairment.

Source: Louisiana Commercial Driver License Manual — § 2.22.1, “Alcohol and Driving”

Question 2

What should you do before taking a commercial vehicle into a curve?

  1. A Reduce speed to a safe level and select the proper gear
  2. B Shift to a higher gear and accelerate
  3. C Stop before entering every curve

Correct answer: A – Reduce speed to a safe level and select the proper gear

Slow to a safe speed and select the correct gear before entering the curve. This avoids hard braking or shifting while the vehicle is turning. Using some power through the curve can also help maintain vehicle stability and allows smooth acceleration after the curve.

Source: Louisiana Commercial Driver License Manual — § 2.3.1, “Before Entering a Curve”

Question 3

If you are not seriously injured, what is your first priority at a crash scene?

  1. A Leave the scene immediately
  2. B Remove your personal belongings
  3. C Protect the area from another collision
  4. D Discuss who caused the crash

Correct answer: C – Protect the area from another collision

The Louisiana CDL manual lists protecting the area as the first step at a crash scene. Move an involved vehicle to the roadside if possible, activate the emergency flashers, and place reflective triangles where approaching drivers can see them in time. Authorities should then be notified and injured people cared for.

Source: Louisiana Commercial Driver License Manual — § 2.20.1, “Protect the Area”

Question 4

A yellow diamond sign showing a side lane joining the main lane warns that:

This sign warns drivers to _____________.
  1. A Emergency vehicles regularly enter the roadway
  2. B Traffic from another roadway may merge ahead
  3. C A four-way intersection is ahead
  4. D All traffic must stop

Correct answer: B – Traffic from another roadway may merge ahead

The Merge sign warns that lanes from two separate roadways converge into a single traffic lane. It gives advance notice of a merging condition rather than requiring all traffic to stop. Drivers should recognize the approaching convergence and remain alert for traffic entering or joining the roadway.

Source: Manual on Uniform Traffic Control Devices for Streets and Highways, 11th ed. — § 2C.45, “Merge Signs and Plaque (W4-1, W4-5, and W4-5aP)”

Question 5

Which component is part of a commercial vehicle's steering system?

  1. A Torque rod
  2. B Pitman arm
  3. C Leaf spring
  4. D Shock absorber

Correct answer: B – Pitman arm

The pitman arm is shown as part of the steering linkage in Louisiana's CDL inspection material. It transfers movement from the steering gear to other linkage components. Torque rods, leaf springs, and shock absorbers are suspension-system components rather than steering parts.

Source: Louisiana Commercial Driver License Manual — § 2.1.3, “Steering System Defects” and Figure 2.1, “Steering System”

Question 6

Why should you shut off the engine and keep the ignition key with you before inspecting beneath a coupled vehicle?

  1. A To keep the battery from discharging
  2. B To prevent anyone from starting or moving the vehicle
  3. C To unlock the brake inspection points
  4. D To reset the vehicle's warning lights

Correct answer: B – To prevent anyone from starting or moving the vehicle

Before going beneath the vehicle to inspect the coupling, place the transmission in neutral, apply the parking brakes, shut off the engine, and take the key. Keeping the key with you prevents another person from starting or moving the vehicle while you are underneath it.

Source: Louisiana Commercial Driver License Manual — § 6.3, “Step 12. Secure Vehicle”

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