DMV

Louisiana CDL Knowledge Test Sample Questions

Real, Louisiana-specific sample questions from our practice question bank, with the correct answer, a full explanation, and a source reference for each. See our national sample questions for topics that apply to every state, or take the full Louisiana cdl practice test to test yourself instead of just reading the answers.

General Driving Knowledge

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1. What is the fee for a Louisiana commercial learner's permit (CLP)?

A$15
B$90
C$44
DThere is no fee at all
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2. How long is a Louisiana CLP valid?

A60 days
BOne year
C180 days
D360 days
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3. How many times can a Louisiana applicant retake the CDL knowledge test in a single day, and does it cost extra?

AOnce per day, at an extra fee each time
BUp to twice daily, on multiple days, with no additional fee
COnly once total; no retakes are permitted at all
DUnlimited times per day, but only on the day of the first attempt
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4. What BAC threshold applies specifically to commercial drivers in Louisiana?

A0.08%, the same as a standard adult driver
B0.02%, the same as an underage driver
C0.10%, higher than the standard adult threshold
D0.04%, half the standard adult threshold
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5. What must a Louisiana CDL applicant complete before applying for their first commercial driver's license?

ANo additional training; the knowledge test alone is sufficient
BA four-year commercial driving degree program
CFederal entry-level driver training (ELDT) through an authorized provider
DA separate state-only training program unrelated to federal ELDT
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6. What noncommercial license must a Louisiana applicant already hold before applying for a CLP?

AThere is no prior license requirement at all
BA valid Class A-E license from the same jurisdiction
CA learner's permit only, nothing further
DA commercial license from another state

More Questions

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7. Under federal hours-of-service rules that apply to Louisiana CDL holders, how many hours of driving are allowed after 10 consecutive hours off duty?

AUp to 15 hours, with no separate on-duty window limit
BUp to 8 hours, regardless of the on-duty window
CUp to 11 hours, within a 14-hour on-duty window
DUnlimited hours as long as breaks are logged