Mississippi CDL practice test

Getting a commercial driver's licence in Mississippi starts with the CDL knowledge tests. The content is federal: every state, Mississippi included, writes its tests from the FMCSA CDL manual, so the general knowledge test has 50 questions, the endorsement tests have 20 to 30, and the passing score is 80% on each. The Mississippi driver licensing agency administers the test; the rules behind it are published by the FMCSA. Try the free Mississippi CDL practice questions below, then pick a full test.

50general knowledge questions
80%passing score on every test
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Free Mississippi CDL practice questions

Five questions from the general knowledge, air brakes and combination vehicles banks, the three tests most Mississippi Class A applicants take first. Show the answer to read the explanation.

You come upon a crash scene. Your first step should be to:
- Protect the area: park away from traffic, turn on flashers, and set out warning devices
- Drive on and report it at the next exit
- Move the injured people to the roadside
- Take photos for the insurance company
Show answer
Answer: A. Protect the area: park away from traffic, turn on flashers, and set out warning devices
Keeping another crash from happening comes first. Get your vehicle out of the traffic lanes if you can, use your flashers, and put out reflective triangles to warn others.
Source: FMCSA CDL Manual, Section 2.19 (Accident Procedures: Protect the Area)
At a crash scene where a qualified person is already caring for the injured, you should:
- Take over, since drivers are required to give first aid
- Stay out of the way unless asked to help
- Move the injured people into your cab
- Leave the scene so you do not cause a traffic jam
Show answer
Answer: B. Stay out of the way unless asked to help
Do not get in the way of trained help. If nobody is helping, do what you can: stop serious bleeding with direct pressure, keep the injured warm, and move them only if fire or traffic makes it necessary.
Source: FMCSA CDL Manual, Section 2.19 (Accident Procedures: Care for the Injured)
Which of these is a common cause of vehicle fires?
- Driving in the rain
- Using low-beam headlights
- Under-inflated tires and dual tires that touch each other
- Keeping the fuel tank full
Show answer
Answer: C. Under-inflated tires and dual tires that touch each other
Tires that run under-inflated or rub together build enough heat to ignite. Other common causes are fuel spills after a crash, short circuits in wiring, loose fuel connections, and improperly loaded or ventilated cargo.
Source: FMCSA CDL Manual, Section 2.20.1 (Causes of Fire)
You discover your vehicle is on fire. The first thing you should do is:
- Keep driving to the nearest fire station
- Pull into a service station so you can use its water
- Open the trailer doors to let the smoke out
- Pull off the road into an open area away from buildings, trees, and other vehicles, and never into a service station
Show answer
Answer: D. Pull off the road into an open area away from buildings, trees, and other vehicles, and never into a service station
Get the burning vehicle away from anything else that can burn, notify emergency services, and keep the fire from spreading. Opening doors or a hood feeds the fire with air.
Source: FMCSA CDL Manual, Section 2.20.2 (Fire Fighting)
A B:C fire extinguisher is designed for:
- Electrical fires and burning liquids
- Wood, paper, and cloth only
- Burning metals such as magnesium
- Tire fires only
Show answer
Answer: A. Electrical fires and burning liquids
The B rating covers burning liquids like fuel, and the C rating covers electrical fires. An A:B:C extinguisher also handles ordinary combustibles like wood, paper, and cloth.
Source: FMCSA CDL Manual, Section 2.20.2 (Extinguishing the Fire)

Every CDL test for Mississippi drivers

Each page has ten free sample questions, the real question count, the 80% pass mark and what the test covers.

How the Mississippi CDL knowledge test works

You take the general knowledge test first; it is required for every CDL class. Class A drivers add the combination vehicles test. Almost everyone takes the air brakes test, because skipping it puts an air brake restriction on the licence. Endorsements (hazmat, tanker, doubles/triples, passenger, school bus) each have their own knowledge test. Pass the tests and you hold a commercial learner's permit; the skills test in a truck comes later.

Fees, appointment rules and test centre locations are set by Mississippi and change over time, so check the state driver licensing agency before you go. What does not change is the content, and that is what PassRig drills.

Mississippi CDL test questions

How many questions are on the Mississippi CDL test?

The Mississippi CDL general knowledge test follows the federal model: 50 questions, 40 correct to pass. Endorsement tests are shorter: air brakes 25, hazmat 30, and combination vehicles, tanker, doubles/triples, passenger and school bus 20 each.

What is the passing score on the Mississippi CDL permit test?

80% on every knowledge test, the same pass mark used across the United States.

Where do I take the CDL knowledge test in Mississippi?

At the Mississippi state driver licensing agency (the DMV, DOT or equivalent). Check its website for locations, appointments and current fees; the test content itself comes from the FMCSA CDL manual.

Does PassRig have Mississippi CDL practice questions?

Yes. Pick Mississippi in the app and you get practice sets and mock exams built from the knowledge test content your state uses, with the real counts and the 80% line.