Knowledge Test Class A

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This license is required for driving any legal combination of vehicles, with a gross combination weight rating of 26,001 pounds or more, provided the GVWR of a trailer exceeds 10,000 pounds To receive this license, applicants must pass a 50-question..

This license is required for driving any legal combination of vehicles, with a gross combination weight rating of 26,001 pounds or more, provided the GVWR of a trailer exceeds 10,000 pounds To receive this license, applicants must pass a 50-question test. To pass, applicants must answer 40 questions correctly. Each question has four possible answer choices. Test questions come from the New Jersey Commercial Driver License Manual. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving.. Endorsements that may be used with a Class A CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes and School bus.

Passing grade:

When traveling down a long downgrade, you should brake by:

Explanation
On a downgrade, you should use the braking effect of your engine as the principal way of controlling your speed. Save your brakes for additional slowing or stopping that may be required by road or traffic conditions.

If cargo on a flatbed trailer is 40 feet long, it must be secured by a minimum of:

Explanation
On flatbed trailers and trailers without sides, cargo must be tied down. There should be at least one tie-down for every 10 feet of cargo. Regardless of the size of the cargo, at least two tie-downs must be used.

Sending text messages while driving:

Explanation
Sending and reading text messages while driving is prohibited.

During an applied leakage test, the maximum leakage rate for a single vehicle with air brakes is:

Explanation
It is important to know the maximum air loss rate that is safe for your specific vehicle. A single vehicle with air brakes should have a leakage rate no higher than 3 psi in a minute during an applied leakage test.

When loading a trailer, it is important to:

Explanation
The weight of cargo in a trailer should be evenly balanced. Having too much or too little weight on an axle can interfere with proper control of the vehicle. Additionally, having too much weight on one axle can damage it.

When asked about the vehicle's oil during the vehicle inspection test, you must be able to do all of the following, except:

Explanation
During the vehicle inspection test, you must be able to indicate where the oil dipstick is located; show that the oil level is within a safe operating range; and show that the oil level is above the refill mark.

Pressing and releasing the brake pedal unnecessarily can:

Explanation
On a vehicle with air brakes, pressing and releasing the brake pedal unnecessarily may let air out of the braking system faster than the compressor can replace it. This may cause the system's air pressure to become too low and the brakes to stop working.
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