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The CDL general knowledge test is required to be taken by all CDL applicants. The Mississippi CDL test consists of 50 questions. To pass, you must correctly answer at least 40 questions (80%). The general knowledge test covers the contents of the Mississippi CDL Manual. All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Vehicle Inspection Test, Basic Control Skills Test, Road Test. In addition, the Class A CDL test will include questions based on the Combination Vehicles section. Take this CDL practice test now to prepare for the actual MS general knowledge test! To get your CDL, you must pass both the knowledge and skills tests. CDL knowledge tests include: General Knowledge, Passenger Transport, Air Brakes, Combination Vehicles, Hazardous Materials, Tanker Vehicles, Doubles/Triples, School Bus, Firefighter. Depending on what class of license (A, B or C) and endorsements you need, you must take one or more knowledge tests. A special endorsement is also required to drive certain types of vehicles. The following endorsements may be used with a Class A, B or C CDL: HazMat (H), Tank Vehicles (N), Tank Vehicles Transporting Hazardous Materials (X) and Passenger Transport (P). The School Bus endorsement (S) is only available for Class A or B CDL, and the Doubles/Triples endorsement (T) is only available for Class A driver's licenses.
1. When changing lanes, you should:
do it slowly, so a driver you did not see may have a chance to honk their horn.
turn sharply.
do it quickly so other vehicles won't get into the lane.
ensure that the vehicle behind you has moved into your blind spot.
2. When shifting down, after releasing the clutch for the first time you should:
brake gently.
push in the clutch again.
shift to the lower gear.
press the accelerator.
3. The height of the vehicle's center of gravity:
should only be a concern when driving a vehicle.
is very important for safe handling.
should only be a concern when loading a vehicle.
should only be a concern when driving in high winds.
4. What plays a major role in mountain driving?
5. If driving a new vehicle, you should familiarize yourself with the controls and equipment:
before you start driving.
as you drive.
within the first 50 miles.
after pulling into a service station.
6. Which of the following is a reason to cover cargo?
To protect people from spilled cargo
To contain a spill
To protect the cargo from weather
All of the above.
7. Name some exhaust system parts.
Main spring, axle and font axle hanger
Mufflers, mounting brackets and vertical stacks
Drag link, spindle and gear box
Pitman arm, hydraulic fluid reservoir and tie rod
8. When only the tractor has ABS:
you should be able to maintain steering control during braking.
there is a greater chance of jackknifing.
the trailer is less likely to swing out.
the ABS won't work.
9. The amount of liquid to load into a tank depends on:
the weight of the liquid.
the amount the liquid will expand in transit.
legal weight limits.
All of the above.
10. You should carefully check for traffic:
When driving through an intersection.
As you approach an intersection.
When approaching a curve.
All of the above.
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MS CDL Knowledge Test

Number of questions: 50
Correct answers to pass:40
Passing score:80%
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