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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. If you do not have a cell phone or CB, the first thing you should do at an accident scene is to:
protect the accident area.
care for the injured.
clear the area.
gather Information for the  accident report.
2. The space under a heavily loaded vehicle can be very small. This can cause problems:
when crossing railroad tracks.
on unpaved yards.
on dirt roads.
All of the above.
3. When your rear wheels lock up, you may:
skid, jackknife, or spin the vehicle.
lose steering control.
gain better control of the vehicle.
All of the above.
4. If you smell exhaust fumes in the cab, you should:
stop immediately.
open the windows.
remember to conduct a post-trip inspection.
wait for the next stop, then inspect your vehicle.
5. When the spring brakes are on, you should:
not push the brake pedal down.
press the accelerator.
pump the brakes.
exceed the posted speed limit.
6. Excessive use of the service brakes results in overheating. Too much heat can:
cause the brakes to squeak.
cause the brakes to grab.
cause the brakes apply unevenly.
make the brakes stop working.
7. After an accident, an improper use of flares could cause:
the vehicle to slide back and forth.
a fire if spilled fuel is on the ground.
air pressure to build from 50 to 100 psi within 2 minutes.
the springs to put on the brakes.
8. If you have convex mirrors, be aware that:
objects may appear to be faster than they really are.
in a convex mirror objects appears larger than they really are.
everything appears smaller in a convex mirror than it would if you were looking at it directly.
objects seem closer than they really are.
9. If your vehicle is equipped with a front brake limiting valve, to ensure normal stopping power make sure the control is:
in the "normal" position.
in the "off" position.
in the "slippery" position.
in the "neutral" position.
10. Why should you be in the proper gear before starting down a hill?
changing gears on a hill is illegal.
it will help you go faster when you reach the bottom of the hill.
it will help the vehicle be more stable while turning.
gravity can cause the speed of your vehicle to increase.
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CDL Knowledge Test MT

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