CDL PRACTICE TEST - GENERAL KNOWLEDGE (NEW JERSEY)

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The CDL general knowledge test is required to be taken by all CDL applicants. The New Jersey 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 Jersey 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 NJ 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 only way to stop a front-wheel skid is to:
let the vehicle slow down.
countersteer.
supply more power to the drive wheels.
All of the above.
2. Federal, State, and local regulations concerning commercial vehicle weight, securing cargo, and covering loads vary widely. You should obey:
Federal regulations
State regulations
Local regulations
All of the above.
3. What is true about tire chains?
You should learn how to put the chains on before you need to do it in snow.
You should watch the official video tutorial by the manifacturer before putting them on.
You must carry the at least 6 chains and extra cross-links.
All of the above.
4. Name two causes of tire fires.
Under-inflated tires and dual tires that touch
Driver smoking and poor ventilation.
Excessive braking
Mismatched tires and road debris.
5. Black ice is:
a thick layer of ice.
ice that makes the road look dry.
a thin layer of black ice.
None of the above.
6. When the wheels of a trailer lock up, the trailer will tend to swing around. This is more likely to happen when:
the trailer is empty or lightly loaded.
the trailer is overloaded.
the trailer is fully loaded.
None of the above.
7. When backing, it is best to:
use a helper whenever possible.
use only the passenger's side mirror.
back toward the passenger's side when possible.
try to back in the direction of the drift.
8. How can you determine your following distance?
Pass a stationary object and count how many seconds it takes the vehicle ahead of you to reach that same object.
When the vehicle ahead of you passes a stationary object such as a sign along the road, use the stopwatch on your smartphone to determine how long it takes you to reach that same object.
When the vehicle ahead of you passes a stationary object on the side of road, start counting the seconds it takes you to reach that same object.
None of the above.
9. Which of these is a possible consequence of forcing an automatic transmission into a lower gear at high speed?
Loss of steering control
Loss of hydraulic pressure
Loss of all engine braking effect
All of the above.
10. During a pre-trip inspection, when checking the power steering hoses, you should:
check for leaks.
check for damaged or bent rims.
look for broken or distorted coil springs.
check that the brake chambers are not leaking.
 
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NJ CDL Knowledge Test

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