Louisiana CDL Practice Test — General Knowledge, Air Brakes & Endorsements (2026)
Louisiana's commercial driver license program requires passing a 50-question written knowledge test with a minimum score of 80%. Applicants must be at least 18 years old, though drivers under 21 cannot transport hazmat or operate out-of-state. You must first obtain a Commercial Learner's Permit (CLP) and hold it for at least 14 days before taking the driving skills test. All CDL applicants must pass a DOT medical examination and complete Entry-Level Driver Training (ELDT). Louisiana offers various CDL endorsements for specialized vehicle types and cargo.
Sample Louisiana CDL Practice Test Questions & Official Manual Citations (2026)
Below are 4 real sample questions from our Louisiana cdl practice test bank. Every question in PassMyDMV cites the exact page and rule in the official Louisiana manual so you understand the law behind every answer:
Sample Question 1 · Litter Costs
Official Louisiana Manual · Page 4
About how much does Louisiana spend each year cleaning up highways?
- A. About $4 million
- B. More than $40 million Correct
- C. Exactly $450,000
- D. Less than $1 million
Why B. More than $40 million is correct: The manual says Louisiana spends more than $40 million annually on highway cleanup, so the cost is far above a small maintenance expense. [Manual: Pages 1-6 — litter law and stats, p. 4]
Manual excerpt (Official Louisiana Manual · Page 4): “Louisiana spends more than $40 million a year to clean up our highways.”
Sample Question 2 · Litter Costs
Official Louisiana Manual · Page 4
In 2004, what did Louisiana cleanup crews pick up from state highways?
- A. Exactly 20,000 tires
- B. About 45,000 cigarette filters
- C. More than 17 million bottles
- D. An estimated 450,000 bags of trash Correct
Why D. An estimated 450,000 bags of trash is correct: The 2004 statistic is 450,000 bags, shown with an estimated 20,000 miles of trash collected by cleanup crews. [Manual: Pages 1-6 — litter law and stats, p. 4]
Manual excerpt (Official Louisiana Manual · Page 4): “In 2004 alone, state and sheriff cleanup crews picked up an estimated 450,000 bags (20,000 miles) of trash in our state.”
Sample Question 3 · Litter Responsibility
Official Louisiana Manual · Page 4
Under Louisiana litter law, who is responsible for litter coming from inside or outside a vehicle?
- A. The driver Correct
- B. The vehicle owner only after a warning
- C. The cleanup crew assigned to that road
- D. Only the passenger who dropped it
Why A. The driver is correct: The manual places responsibility on the driver for litter from the vehicle, whether it comes from inside or outside. [Manual: Pages 1-6 — litter penalties, p. 4]
Manual excerpt (Official Louisiana Manual · Page 4): “The driver is responsible for all litter coming from the
vehicle’s interior or truck bed, and the driver can be cited for littering committed by the
passengers in his/her vehicle.”
Sample Question 4 · Litter Penalties
Official Louisiana Manual · Page 4
What can Louisiana littering penalties include for a conviction?
- A. Only a written warning
- B. Fines, community service, license suspension, jail, or a combination of them Correct
- C. Only points on a CDL test record
- D. Vehicle impoundment for every offense
Why B. Fines, community service, license suspension, jail, or a combination of them is correct: The penalties listed range from a fine and community service up to a larger fine, license suspension, jail, and more community service. [Manual: Pages 1-6 — litter penalties, p. 4]
Manual excerpt (Official Louisiana Manual · Page 4): “According to Louisiana R.S.30:2531- 2531.3, penalties for conviction range from a $50 fine plus 8 hours community service picking up litterto a $5,000 fine, one year driver’s license suspension, 30 days in jail AND 100 hours of community service.”
Most-Tested Louisiana CDL Practice Test Topics in Our 645-Question Bank
Our Louisiana cdl practice test bank contains 645 active multiple-choice questions written directly from the official Louisiana handbook. Here is how those questions break down across the core exam topics:
Frequently Asked Questions: Louisiana CDL Practice Test
All Louisiana DMV Practice Tests & Study Guides
- Louisiana DMV Practice Test Hub (Car, Motorcycle & CDL overview)
- Louisiana Car Learner’s Permit Practice Test (989 questions)
- Louisiana Motorcycle Permit Practice Test (393 questions)
- Louisiana CDL Commercial Practice Test (645 questions)
- Louisiana Road Signs & Traffic Signals Practice Test (148 questions)
- Official Louisiana Driver Manual Table of Contents & PDF Handbook
- How to Get Your Louisiana Driver License: 2026 Step-by-Step Guide
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