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The CDL general knowledge test is required to be taken by all CDL applicants. The New York 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 New York 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 NY 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 taking a curve you should:
maintain the same speed you were traveling at before entering the curve.
be in a gear that will let you accelerate slightly in the curve.
brake in the curve to avoid to locking the wheels.
slightly exceed the posted speed limit for the curve, as this will help you keep control.
2. Front brake limiting valves were used to:
reduce your speed so further braking or shifting is not required.
prevent overheating of the front tires.
reduce the chance of the front wheels skidding on slippery surfaces.
reduce exhaust emissions.
3. Truck tractors with air brakes built after March 1, 1997, are required to be equipped with:
hydraulic brakes.
a rear backup camera.
anti-lock brakes.
4. Stab braking:
involves applying the brakes all the way, and releasing them when wheels lock up.
involves applying the brakes as hard as you can without locking the wheels.
should never be used.
involves steady pressure on the brake pedal without locking the wheels.
5. After beginning a trip, you should inspect your cargo:
within the first 100 miles.
during your first rest stop.
before the last 25 miles.
within the first 50 miles.
6. Hazardous materials placards are:
Signs put on the outside of a vehicle that identify the hazard class and weight of the vehicle.
Signs put on top of a vehicle that identify the hazard class of the cargo.
Signs put on the outside of a vehicle to warn others of hazardous materials.
None of the above.
7. When checking the condition of the steering system, you must:
grab the steering mechanism to test for looseness.
Visually inspect the steering mechanism.
Test what happens under braking conditions.
Check the windshield wiper arms.
8. Total stopping distance equals:
Perception distance + reaction distance + braking distance
Reaction distance - following distance + braking distance
Braking distance + viewing distance
Perception distance + braking distance
9. When driving on slippery surfaces, a lack of spray from other vehicles indicates that:
there is no ice on the road surface.
the pavement is dry.
ice has formed on the road.
the road hasn't started to ice up yet.
10. When backing you should:
back and turn toward the right side.
avoid making pull-ups to reposition your vehicle.
use driver-side backing.
not use a helper.
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NY CDL Knowledge Test

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