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The CDL general knowledge test is required to be taken by all CDL applicants. The Vermont 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 Vermont 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 VT 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. The height of a vehicle's center of gravity is important for safe handling. Why?
Trucks with a high center of gravity can roll over at the posted speed limit for a curve.
A high center of gravity means you are less likely to tip over.
Trucks with a high center of gravity have better traction.
2. As long as the engine is not overheated, it is safe to remove the radiator cap.
True, as long as you are wearing gloves.
3. What is a hazard?
The driver is uncertain about taking the off ramp.
The most common cause of hydroplaning.
Any road condition or other road user that is a possible danger.
4. Axle weight is:
the weight of all the axles added together.
the weight transmitted to the ground by one axle or one set of axles.
the maximum safe weight your tires can carry at a specified pressure.
5. Tests have shown that trucks with a high center of gravity are more likely to tip over, therefore you should:
put the lightest parts of the cargo under the heaviest parts.
distribute the cargo as low as possible.
All of the above.
6. When driving in heavy traffic, the safest speed is:
slower than the speed of other traffic.
the posted speed limit.
the speed of traffic.
7. Tar in the road pavement often rises to the surface in very hot weather. Spots where the tar "bleeds":
have good traction.
will help you get better gas mileage.
are very slippery.
8. When backing, you should:
back quickly.
avoid using the mirrors.
use a helper if possible.
9. During the after-trip inspection, if you notice anything affecting safety or potentially leading to a mechanical breakdown, you should:
try to fix the problem yourself.
ask the motor carrier to make a written report.
make a written report.
10. Hazardous materials can be recognized by looking at the container's:
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VT CDL Knowledge Test

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