Knowledge Test Class B #1
Class B Driving Test | New Jersey 2025 #1 Page 7 of 7
Train for FREE online with our New Jersey class B license test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a NJ CDL class B permit in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that CDL class B requirements may vary from state to state.
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43 . Convex mirrors:
Are illegal in most states.
Convex mirrors are curved to provide drivers with wider views of the road than can be provided by flat mirrors. However, convex mirrors also make objects appear to be smaller and farther away than they really are.
44 . To stop in a vehicle that uses air brakes, the driver should:
Pull the brake pedal up.
To make a normal stop in a vehicle with air brakes, push the brake pedal down. The harder the pedal is pressed, the more air pressure is released.
45 . To check the automatic transmission fluid level in some vehicles, the vehicle:
May have to be left running.
For some vehicles, you may need to leave the engine running to be able to check its automatic transmission fluid level.
46 . When testing a parking brake, the vehicle should:
Be driven while the parking brake is applied.
To test a parking brake, you should fasten your safety belt, set the parking brake for the power unit, release the trailer parking brake (if applicable), place the vehicle in low gear, and attempt to pull forward against the parking brake. If the parking brake does not hold while you are attempting to pull forward against it, the brake is faulty and must be fixed.
47 . If you are being tailgated, you should:
Allow the vehicle to pass.
If you are being tailgated, it is best to allow more room to open up in front of your vehicle. This will help you avoid the need for sudden stops, which could result in the tailgater rear-ending you, and will make it easier for the tailgater to pass. Speeding up may only make things more dangerous by prompting the other driver to continue tailgating you at a higher speed.
48 . You may be denied a HazMat endorsement if:
You do not suffer from a mental illness.
You will be denied a HazMat endorsement, or lose an existing endorsement, if you are not a lawful permanent U.S. resident; you renounce your U.S. citizenship; you are wanted for, under indictment for, or convicted of certain felonies; you are judged as mentally unstable or are committed to a mental institution; or you are deemed to pose a security threat by the Transportation Security Administration (TSA).
49 . How much water must be on a road surface for a vehicle to hydroplane?
None
Hydroplaning is an effect in which a vehicle's tires lose traction with the surface of the road and instead glide along a layer of water. There does not have to be much water on the road for this to occur.
50 . If a truck's Anti-Lock Braking System (ABS) is not working:
The truck will lack brakes on its left side.
If an ABS system fails, the vehicle will still have normal braking function. The driver should continue to drive and brake as they normally would.
See the exact questions that will be on the 2025 New Jersey DMV exam.
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2025 New Jersey | Frequently Asked Questions
A CDL Class B license in New Jersey allows the holder to operate single vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, or any such vehicle towing another not exceeding 10,000 pounds. This includes buses, farm labor vehicles, and trailers. It does not allow the operation of Class A combination vehicles.
A Class B CDL license in New Jersey allows the holder to operate vehicles such as city buses, tourist buses, segmented buses, school buses, delivery trucks, dump trucks, garbage trucks, utility trucks and any single vehicle with a GVWR of 26,001 pounds or more or such vehicle towing another not exceeding 10,000 pounds.
In New Jersey, to obtain a Class B CDL license, you must be at least 18 years old (21 for interstate driving), have a valid basic New Jersey driver’s license, pass a vision exam, and successfully complete a written knowledge test. You must also pass a road skills test in the type of vehicle you plan to drive.
In New Jersey, you must be at least 18 years old to qualify for a Class B Commercial Driver's License (CDL). However, you must be 21 or older if you plan to drive across state lines or transport hazardous materials.
While not always necessary, specific endorsements can be added to a Class B CDL license in New Jersey to allow the driver to operate certain types of vehicles. These include school buses, passenger vehicles, tank vehicles, and those carrying hazardous materials. Each endorsement requires passing additional tests.
The Class B CDL skills assessment in New Jersey includes a pre-trip vehicle inspection, a basic vehicle control test, and an on-road driving examination. These tests evaluate your ability to inspect your vehicle, control it during basic maneuvers, and drive it safely in various road and traffic conditions.
Yes, Class B CDL license holders in New Jersey are limited to driving single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or towing a vehicle not heavier than 10,000 pounds. They cannot operate a combination vehicle (Class A) unless they have the appropriate endorsement.
Yes, in New Jersey, the written Class B CDL test can be taken in languages other than English. The test is available in Spanish. However, federal regulations require all CDL holders to read and speak English well enough to communicate with the general public, understand highway traffic signs and signals, respond to official inquiries, and make entries on reports and records.
Yes, you can request test accommodations for the Class B CDL written exam in New Jersey if you have a disability. Accommodations may include extended time, a quiet testing location, or the use of a sign language interpreter. You will need to provide documentation of your disability and specify the type of accommodation needed when scheduling your test.
Yes, if you don't pass the Class B CDL written test in New Jersey, you can retake it. However, you must wait at least seven days before attempting the test again. There may also be additional fees for each retest. It's advisable to study the CDL manual thoroughly before retesting.
