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The CDL general knowledge test is required to be taken by all CDL applicants. The Montana 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 Montana 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 MT 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. How do you test hydraulic brakes for leaks?
Pull forward against parking brake to make sure the hydraulic brakes holds.
Pump the brake pedal ten times and see if it holds.
Pump the brake pedal three times, then apply firm pressure to the pedal and hold for five seconds. The pedal should not move.
None of the above.
2. Heights posted at bridges and overpasses:
are always accurate.
can be incorrect.
are always incorrect.
None of the above.
3. The total weight of a single vehicle including its load is called:
Gross Vehicle Weight (GVW)
Gross Vehicle Rating (GVR)
Gross Vehicle Weight Rating (GVWR)
Gross Combination Weight (GCW)
4. If you are stopped on an incline, how can you start moving without rolling back?
Shift to neutral
Aggressively pump the accelerator
Fully engage the clutch
Apply the parking brake
5. Strong winds can make it difficult to stay in your lane especially when driving:
flatbed trailers.
heavier vehicles.
lighter vehicles.
vehicles with ABS.
6. To avoid a crash:
stopping is always the safest thing to do.
stopping is not always the best thing to do.
swerving is always the worst thing to do.
None of the above.
7. When going down a hill, you should downshift:
after starting down a hill.
as you go downhill.
at the bottom of the hill.
before you start going downhill.
8. Traction is:
the distance your vehicle will travel while you are braking.
the maximum safe weight a tire can carry at a specified pressure.
friction between the tires and the road.
friction between the front and rear tires.
9. When driving on wet roads, you should:
reduce speed by 60%.
reduce speed by about one-third.
follow the vehicle ahead more closely than under ideal driving conditions.
pull of the road and get some rest.
10. During a hazardous materials emergency, you should:
keep everyone away.
prevent smoking and keep open flames away.
warn others of the danger.
All of the above.
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MT CDL Knowledge Test

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