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CDL General Knowledge (Louisiana)

First published: September 3, 2026Last verified: September 3, 2026Reviewed by the CertQuestUSA team
TL;DR

CDL General Knowledge (Louisiana): a 124-question practice bank for the real CDL Permit & Endorsement Exams standard, 2 full papers of 50 questions each with no repeats, every question citing the real regulation it comes from.

Where these questions come from

Every question in this bank cites a real source -- primarily FMCSA CDL Manual (77%) and 49 CFR (23%) of this exam's citations.

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2
full papers, no repeats
50
questions per paper
124
questions in the bank
What this exam covers
Real Louisiana CDL requirements

The knowledge tested here is federal (FMCSA) and identical nationwide -- what varies by state is who administers it and under what terms. Researched directly from Louisiana Office of Motor Vehicles (OMV), Department of Public Safety and Corrections's own site, verified 2026-09-03.

Administering agency
Louisiana Office of Motor Vehicles (OMV), Department of Public Safety and Corrections
CLP (permit) fee
$15 (reported by secondary sources referencing OMV fee schedule; the official OMV CDL page links to a separate fee document that was not independently readable during this research, so this figure is not independently confirmed from a directly-quoted primary source)
CDL license fee
$61.50 ($76.50 in Orleans Parish) for a 6-year CDL; total with handling/service fees estimated $76.50-$99.50 depending on parish (same sourcing caveat as CLP fee)
Road/skills test fee
Third-party skills test: approximately $100 (same sourcing caveat)
Minimum CLP hold before road test
14
CLP validity
Issued for up to 180 days with an option to extend for an additional 180 days if more training time is needed; cannot exceed 360 days total from initial issuance (confirmed directly on official expresslane.la.gov page)
Spanish-language knowledge test
Unconfirmed

Not confirmed for the CDL knowledge test itself. The OMV website offers whole-site UI translation (Espanol/Francais/Tieng Viet), which is a general website feature, not confirmation that the computer-administered CDL knowledge test is offered in another language. Third-party aggregator sites claim the CDL manual/Hazmat test is available in English, French, and Spanish, but this could not be verified against an OMV-published statement. This is the single most important fact in this dataset per the research brief and remains unresolved -- recommend a direct call to Louisiana OMV (225-925-6146) before publishing either way.

5 real sample questions
What is the most important reason for performing a pre-trip inspection before every trip?
A. To satisfy your dispatcher that the truck left on time
B. To find problems that could cause a crash or breakdown before they happen on the road
C. To reduce the number of miles logged for the day
D. To avoid having to fill out any paperwork later
Source: FMCSA CDL Manual §2.1.1
Under the 30-minute break requirement in 49 CFR 395.3, a driver must take a break after accumulating how many cumulative hours of driving time?
A. 4 hours
B. 6 hours
C. 8 hours
D. 10 hours
Source: 49 CFR 395.3
A roadside inspector determines that a commercial motor vehicle has a safety defect serious enough to be an immediate hazard. What is the inspector authorized to do under 49 CFR 396.9?
A. Issue a warning only, since only the motor carrier can pull a vehicle from service
B. Declare the vehicle "out of service" until the defect is corrected
C. Impound the vehicle permanently
D. Fine the driver but allow the vehicle to continue to the next scheduled stop
Source: 49 CFR 396.9
Under the federal tire tread depth standard, what is the minimum tread depth allowed in any major tread groove on a steering axle tire?
A. 1/32 inch
B. 2/32 inch
C. 4/32 inch
D. 6/32 inch
Source: 49 CFR 393.75
What is the minimum tread depth required on non-steering axle tires of a commercial motor vehicle?
A. 1/32 inch
B. 2/32 inch
C. 3/32 inch
D. 4/32 inch
Source: 49 CFR 393.75
Same exam, other states
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Frequently asked questions

How many questions are on the CertQuestUSA CDL General Knowledge (Louisiana) practice test?
124 questions total, split into 2 full papers of 50 each with no repeats across papers.
What topics does the CDL General Knowledge (Louisiana) test cover?
13 domains, with the heaviest weight on Vehicle Inspection (14%), Basic Control & Shifting (10%), and Emergency Maneuvers & Skid Control (10%).
Where do CertQuestUSA's CDL General Knowledge (Louisiana) questions come from?
Primarily FMCSA CDL Manual (77%) and 49 CFR (23%) of this bank's citations -- computed directly from this exam's own question sources, not a generic description.
Is there a free diagnostic for CDL General Knowledge (Louisiana)?
Yes -- 10 real questions across the exam's domains, no sign-up required, with a domain-by-domain breakdown at the end.
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