Louisiana CDL General Knowledge
The commercial licence general knowledge test, written from the federal regulations themselves — 49 CFR Parts 383, 392, 393, 395 and 396 — which set the standard every state CDL programme follows.
- Questions in this course
- 282
- The mock test
- 50 questions, 40 correct to pass.
- Written from
- 49 CFR Parts 383, 392, 393, 395 and 396 (federal commercial driver regulations)
A commercial driver's license (CDL) is the licence a driver needs to operate a large truck or bus. **General Knowledge is the one test every CDL class shares** — Class A, B or C all sit it. An endorsement (passenger, school bus, tank vehicle or hazardous materials) and the hands-on skills test are separate steps that come after it, never instead of it.
This course is for anyone studying for that shared test: a first-time CDL applicant, someone upgrading a licence, or a driver refreshing the rules before a renewal.
The test is given by Louisiana’s own driver licensing agency, not by this site. Since February 2022, a CDL applicant must also complete Entry-Level Driver Training from a provider on the FMCSA Training Provider Registry before taking the skills test for a Class A or B CDL, or for a passenger, school bus or hazardous materials credential — the registry lists approved providers near you.
Louisiana sets its own fees, office hours and required documents, and changes them from time to time, so confirm those with the state before you go.
Every question on this course is written from 49 CFR — the federal regulations that govern commercial driving in every state, and the standard the knowledge test is built on. A state may add rules on top of that federal minimum; check Louisiana’s own CDL supplement, where it publishes one, for anything local this course does not cover.
Official links
- 49 CFR Part 383 — CDL standards and required knowledge — The regulation this course’s questions are written from
- 49 CFR Part 395 — Hours of service — The federal driving-time and rest rules
- FMCSA Training Provider Registry — Find an Entry-Level Driver Training provider before the skills test
Questions
Common questions
Is there an official test, and how is the mock test scored?
80 percent is the federal pass mark for every CDL knowledge test (49 CFR 383.135). No federal rule sets the question count: 49 CFR 383.133 sends the states to AAMVA's test system, which is not public. The count here is the one used by the states that publish theirs -- Michigan's CDL manual and Ohio Administrative Code 4501:1-1-08 -- so your state may differ. 50 questions, 40 correct to pass.
Where do the questions in this course come from?
Every question is written from 49 CFR Parts 383, 392, 393, 395 and 396 (federal commercial driver regulations), and names the passage or section that proves its answer.
Where do I take the CDL General Knowledge test in Louisiana?
The test is given by Louisiana’s own driver licensing agency, not by this site. Since February 2022, a CDL applicant must also complete Entry-Level Driver Training from a provider on the FMCSA Training Provider Registry before taking the skills test for a Class A or B CDL, or for a passenger, school bus or hazardous materials credential — the registry lists approved providers near you.
Is this course free?
Part of every course is free: a slice of every topic and one short practice test a day. Full access is $5 a month for one course, or $20 a month for every course on the site.