Louisiana · CDL

Louisiana CDL Practice Test

The Louisiana CDL knowledge test is administered by Louisiana Department of Public Safety and Corrections, Office of Motor Vehicles. This free practice test covers the 10 areas the Louisiana Commercial Driver License Manual teaches, from louisiana cdl classes endorsements training and driver duties to hazardous materials and school bus safety, with 100 questions written for Louisiana and every answer explained. Pick 25, 50, or 100 questions and start; there is no sign-up.

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Take the Louisiana CDL practice test

The Louisiana bank holds 100 questions written for the Louisiana Commercial Driver License Manual (2005 CDL Testing System, Version July 2017), 1 of them illustrated with a sign, signal, marking, or road scene. Choose a Quick check of 25, a Practice run of 50, or the Full challenge of 100 on the next screen, then choose coaching mode, which explains every answer as you go, or exam mode, which holds the explanations until the end and still shows your running score. It is free, there is no sign-up, and a test in progress is saved on this device.

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Sample questions

Six questions from the Louisiana bank, with the rule behind each answer

Sample 1 · Louisiana Cdl Classes Endorsements Training And Driver Duties

A Louisiana applicant plans to drive a combination rated at 31,000 pounds. The trailer alone is rated at 12,500 pounds. Which CDL class fits that combination?

  1. Class A, because the combination is at least 26,001 pounds and the trailer exceeds 10,000 pounds GVWRCorrect
  2. Class B, because only the tractor rating controls the class
  3. Class C, because every two-unit commercial vehicle uses that class
  4. No CDL class, because the trailer is below 26,001 pounds

Why: Class A covers a combination rated at least 26,001 pounds when the towed vehicle or vehicles have a gross vehicle weight rating above 10,000 pounds. That is why "Class A, because the combination is at least 26,001 pounds and the trailer exceeds 10,000 pounds GVWR" is the appropriate response here.

Sample 2 · Speed Space Hazards Weather And Railroad Crossings

A car looks small in the truck's convex mirror while the driver prepares to merge. What should the driver remember?

  1. The car is closer than it appears, so the mirror glance should be brief and distance judged carefullyCorrect
  2. The car is farther away than it appears, so an immediate merge is safest
  3. Convex mirrors show exact distance as long as the driver looks for several seconds
  4. Objects in a convex mirror are always the same size as in a flat mirror

Why: Mirror checks should be brief, and convex mirrors require judgment because they make objects appear smaller and farther away than they are. That is why "The car is closer than it appears, so the mirror glance should be brief and distance judged carefully" is the appropriate response here.

Sample 3 · Cargo Inspection Weight Balance And Securement

Warehouse staff loaded and secured the trailer while the driver completed paperwork. Who remains responsible for recognizing overload, poor balance, and unsafe securement?

  1. The driver remains responsible for inspecting the load and ensuring safe operationCorrect
  2. Only the warehouse supervisor because that person touched the cargo
  3. Only the carrier's dispatcher until the first fuel stop
  4. No one once the trailer doors have been sealed

Why: Even when another person loads the vehicle, the driver remains responsible for inspection, overload and balance recognition, securement, clear visibility, and access to emergency equipment. That is why "The driver remains responsible for inspecting the load and ensuring safe operation" is the appropriate response here.

Sample 4 · Passenger Vehicle Inspection Loading And Operation

The previous bus driver's report lists a defect. When may the next driver sign that report?

  1. Only after personally replacing the defective part
  2. Whenever the passengers agree that the bus feels safe
  3. After the defect is certified as repaired or certified as not requiring repairCorrect
  4. Before checking the defect, as long as the route begins on time

Why: A bus driver signs the previous driver's inspection report only after listed defects have been certified as repaired or certified as not requiring repair. That is why "After the defect is certified as repaired or certified as not requiring repair" is the appropriate response here.

Sample 5 · Combination Vehicle Control Coupling And Inspection

A combination trailer is loaded high and heavily toward its left side. Which correction best reduces rollover exposure?

  1. Shift everything toward the trailer doors so the tractor carries less
  2. Keep the layout and compensate by using abrupt steering
  3. Move the cargo lower, nearer the center, and distribute it evenlyCorrect
  4. Move more freight upward on the same side to stiffen the suspension

Why: Combination cargo should be kept low, centered, and distributed because a high or side-biased center of gravity increases rollover risk. That is why "Move the cargo lower, nearer the center, and distribute it evenly" is the appropriate response here.

Sample 6 · Hazardous Materials And School Bus Safety

A hazardous-material driver sees a damaged package leaking before departure. What responsibility applies?

  1. Hide it behind undamaged freight and remove the vehicle placards
  2. Take it without shipping papers because the leak identifies the material
  3. Reject the leaking or improperly prepared package and maintain the required papers and placards for accepted freightCorrect
  4. Accept it if the shipper promises to repair it after delivery

Why: The hazardous-material driver rejects leaking or improperly prepared packages, maintains required placards and papers, and transports the shipment safely after shipper and carrier checks. That is why "Reject the leaking or improperly prepared package and maintain the required papers and placards for accepted freight" is the appropriate response here.

What is on the test

The 10 topics the Louisiana CDL practice test covers

These are Louisiana's own topic areas, from louisiana cdl classes endorsements training and driver duties to hazardous materials and school bus safety, each with 10 questions. Under each one are two questions from the bank, shown without their answers; the practice test explains every one of them.

  1. Louisiana Cdl Classes Endorsements Training And Driver Duties10 questions
    • A straight delivery truck has a 28,400-pound GVWR and pulls a small equipment trailer rated at 8,200 pounds. How should the vehicle be classified?
    • A shuttle is below the Class A and Class B weight limits but was designed for the driver and 15 passengers. What licensing trigger applies?
  2. Vehicle Inspection Control Visibility And Communication10 questions
    • A pre-trip inspection reveals a steering defect that could make the truck unsafe. Why must the problem be addressed before departure?
    • Halfway through a route, the temperature gauge rises and the driver notices an unfamiliar odor and vibration. What is the proper inspection mindset?
  3. Speed Space Hazards Weather And Railroad Crossings10 questions
    • A tractor is about to change lanes on I-10. How should the turn signal be used?
    • Heavy rain leaves standing water on a highway. Which risk should guide the commercial driver's speed choice?
  4. Emergencies Abs Skids Crashes Fires And Driver Fitness10 questions
    • A fallen object suddenly blocks most of a truck's lane. If steering is the only escape, what technique limits loss of control?
    • A non-ABS truck must stop as quickly as possible while preserving control. How is controlled braking performed?
  5. Cargo Inspection Weight Balance And Securement10 questions
    • A driver begins a long route with newly secured freight. By when must the first en-route cargo reinspection occur?
    • After the initial cargo check, the driver continues without taking a break. What interval requires another securement inspection?
  6. Passenger Vehicle Inspection Loading And Operation10 questions
    • A bus inspection finds an exterior service panel open and an emergency exit unlatched. What is required before driving?
    • Which interior condition must be corrected before a passenger bus begins its route?
  7. Air Brake Components Inspection And Use10 questions
    • Which description correctly separates the three braking functions on an air-braked vehicle?
    • Air pressure reaches the governor's cut-out point, then later drops to cut-in pressure. What should the compressor do?
  8. Combination Vehicle Control Coupling And Inspection10 questions
    • Why must a doubles driver make a highway lane change with especially smooth steering?
    • A bobtail tractor feels unusually easy to skid during braking. What explains the behavior?
  9. Doubles Triples And Tank Vehicle Operation10 questions
    • A set of triples enters a curve with a sudden steering input. Which unit faces the greatest crack-the-whip rollover risk?
    • A driver is arranging two semitrailers for a twin combination, one heavily loaded and one light. Where should the heavier one go?
  10. Hazardous Materials And School Bus Safety10 questions
    • Where may hazardous-material shipping papers be kept while the driver is belted and driving?
    • Which sequence correctly states the basic hazardous-material description on a shipping paper?
How to prepare

A study plan for the Louisiana CDL knowledge test

1

Find out where you stand

Take a Quick check of 25 in coaching mode. Read each explanation, including the ones you got right; it tells you the rule Louisiana tests, not just the answer.

2

Study the topics you missed

Your account's Study tab ranks the 10 topics by your results. Read that chapter of the Louisiana Commercial Driver License Manual, then take another Quick check to confirm the gap has closed.

3

Rehearse the real thing

Take the Full challenge of 100 in exam mode. Aim for 80 percent or better twice in a row; at that point you are answering from the rules, not from memory of the questions.

Questions

Louisiana CDL practice test questions

Is this the official Louisiana CDL knowledge test?

No. DMV Exam Pass is an independent study service and is not affiliated with Louisiana Department of Public Safety and Corrections, Office of Motor Vehicles. The questions are written in the style of the exam to prepare you for it; the official test is taken with the agency.

What does the Louisiana CDL practice test cover?

The 100 questions are spread evenly across 10 topics: Louisiana Cdl Classes Endorsements Training And Driver Duties, Vehicle Inspection Control Visibility And Communication, Speed Space Hazards Weather And Railroad Crossings, Emergencies Abs Skids Crashes Fires And Driver Fitness, Cargo Inspection Weight Balance And Securement, Passenger Vehicle Inspection Loading And Operation, Air Brake Components Inspection And Use, Combination Vehicle Control Coupling And Inspection, Doubles Triples And Tank Vehicle Operation, and Hazardous Materials And School Bus Safety. Every test you take draws from all of them, so a weak area shows up quickly.

How many questions are in the practice test, and how long does it take?

The Louisiana bank holds 100 questions. A Quick check of 25 takes about ten minutes, a Practice run of 50 about twenty, and the Full challenge of 100 about forty. You can pause any time.

Are these the real questions from the Louisiana exam?

No. Nobody outside the agency has the real questions, and we do not use, claim, or advertise leaked or exact exam questions. These are independently written questions that test the same rules, so what you learn transfers to whatever the real test asks.

Which handbook should I study for the Louisiana CDL knowledge test?

The Louisiana Commercial Driver License Manual (2005 CDL Testing System, Version July 2017), published by Louisiana Department of Public Safety and Corrections, Office of Motor Vehicles. Every question here is written for it, and each explanation names the rule, so when you miss a question you know which chapter to read.

What is the difference between coaching mode and exam mode?

Coaching mode shows whether each answer was right, and why, before you move on; it is for learning. Exam mode holds the explanations and the correct choices until the end and still shows your running score; it is for checking readiness. Both draw from the same bank, and scoring happens on our servers, so no answer key is loaded in your browser.

Does the practice test include road signs and pictures?

Yes. 1 of the 100 questions are illustrated with a sign, signal, marking, or road scene, the way the CDL knowledge test presents them.

Is the Louisiana practice test free, and do I need an account?

It is free, with no sign-up. An optional account saves your progress across devices and shows which topics need work.

Can I pause and come back later?

Yes. A test in progress is saved on this device and offered again when you return. With an account, it is saved to your account as well, so you can continue on another device.

What score should I aim for before test day?

Aim for 80 percent or better on a Full challenge in exam mode, more than once. The official passing score is set by the agency; scoring consistently above 80 here means you are answering from the rules rather than from luck.