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The CDL general knowledge test is required to be taken by all CDL applicants. The Missouri 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 Missouri 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 MO 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. You should hold your steering wheel:
firmly with both hands.
firmly with one hand.
with both hands on the same side of the wheel.
2. There are two ways of knowing when to shift up:
Automatic transmissions and shift indicator light.
Weather conditions and road speed.
Engine speed and road speed
3. If a load is 10 feet long, the minimum number of tie-downs required is:
4. If your cargo only fills one-third of the length of your trailer, make sure your cargo is:
piled up high with heavy cargo on top.
centered and spread out as much as possible.
to one side and as close to the ground as possible.
5. When using double clutching to shift gears, if you are having difficulty putting the vehicle into the next gear you should:
return to neutral, release the clutch, increase the engine speed to match the road speed, and try again.
force the lever until you put the vehicle into the next gear.
reduce the engine speed to drop back to the previous gear.
6. To avoid a crash:
stopping is not always the best thing to do.
swerving is always the worst thing to do.
stopping is always the safest thing to do.
7. Which of the following trailers can get stuck on raised crossings?
Car carrier
All of the above.
8. Effects of distracted driving include:
improved reaction time.
increased following distance.
incorrect inputs to the steering.
9. On ramp/off ramp curves should be taken:
well below the posted speeds.
slightly below the posted speeds.
at the posted speeds.
10. Before unloading explosive materials, you should:
connect heater power sources.
keep the engine running.
turn your engine off.
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MO CDL Practice Test

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