Combination Vehicles Practice Test | New Jersey 2024 #1

Train for FREE online with our New Jersey CDL combination vehicle 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 combination license in 2024, 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 DMV requirements for issuing a combination license may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

1 . What does the trailer air supply control look like?

It is a square blue knob.

It is a triangular yellow knob.

It is an eight-sided red knob.

It is a circular orange knob.

On newer vehicles, the trailer air supply control is an eight-sided red knob. It's used to control the tractor protection valve.

2 . A tractor protection valve is:

A device that keeps air in the tractor or truck brake system, should the trailer break away or develop a bad leak.

A device that prevents theft.

A device that controls fuel levels.

A device that allows the battery to recharge efficiently.

On combination vehicles with air brakes, the tractor protection valve keeps air in the tractor or truck brake system, should the trailer develop a bad leak or break away from the tractor.

3 . Rollovers happen when:

You drive too slowly.

You are stopped.

You turn too quickly.

You plan an escape route.

Rollovers happen as a result of drivers taking turns too fast.

4 . When traveling more slowly than 40 mph, maintain at least ____ of following distance per every 10 feet of your vehicle.

One second

Two seconds

Three seconds

Four seconds

At speeds below 40 mph, you should allow at least one second of following distance for every 10 feet of your vehicle. Follow the same formula when traveling at faster speeds, then add one additional second to your following distance. Remember that larger vehicles require more space to stop than smaller vehicles.

5 . Which type of vehicle is most prone to the “crack-the-whip” effect?

A five-axle tractor semi-trailer

A three-axle tractor semi-trailer

A bobtail tractor

A triple trailer

Triple combination trailers are most vulnerable to the "crack-the-whip" effect.

6 . What is a bobtail?

A tractor without a semi-trailer

A tractor with two semi-trailers

A tractor that goes faster than the speed limit

A tractor that goes slower than the speed limit

Tractors without semi-trailers are referred to as bobtail tractors. Operating a bobtail tractor requires drivers to exercise caution.

7 . When backing up to couple a trailer, you should position the tractor:

At a 90-degree angle in front of the trailer.

Directly in front of the trailer.

At a 30-degree angle in front of the trailer.

At a 60-degree angle in front of the trailer.

When backing up to couple a trailer, you should position the tractor directly in front of the trailer. Trying to couple while backing at an angle could cause the trailer to move and the landing gear to break.

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2024 New Jersey | Frequently Asked Questions

A CDL Class A license in New Jersey is a commercial driver's license that allows the holder to operate any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more, provided the GVWR of the vehicle(s) being towed is in excess of 10,000 pounds. It includes tractor-trailers, truck and trailer combinations, and flatbeds.

A Class A CDL license in New Jersey allows operators to drive vehicles such as tractor-trailers, truck and trailer combinations, flatbeds, livestock carriers, and tank vehicles. It's also needed to operate any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 lbs or more where the towed vehicle exceeds 10,000 lbs.

To obtain a Class A CDL license in New Jersey, you must be at least 18 years old (21 for interstate driving), have a valid driver's license, pass a vision test, and complete a medical examination. You'll also need to pass a knowledge test and skills test which includes a pre-trip vehicle inspection, basic vehicle controls, and on-road driving.

In New Jersey, you must be at least 18 years old to qualify for a Class A CDL license. However, to use it for interstate driving or to transport hazardous materials, you must be at least 21 years old. These age requirements are in place to ensure the safety of all road users.

Endorsements are not required for a Class A CDL license, but they allow you to operate specific types of vehicles or haul certain types of cargo. In New Jersey, endorsements include T (Double/Triple Trailers), P (Passenger), N (Tank Vehicles), H (Hazardous Materials), and S (School Bus). Each endorsement requires additional knowledge tests.

The Class A CDL skills test in New Jersey encompasses three parts: a pre-trip inspection to assess your ability to check the vehicle for safety issues, a basic controls test to evaluate your skills in controlling the vehicle, and a road test to confirm your ability to drive the vehicle safely in various traffic situations and conditions.

Yes, there are limitations for Class A CDL license holders in New Jersey. These may include restrictions based on medical conditions, failing certain parts of the skills test, or not meeting age requirements for interstate driving. Also, without specific endorsements, drivers may be restricted from operating certain types of commercial vehicles or transporting specific types of cargo.

Yes, in New Jersey, the written Class A CDL test is available in multiple languages, including Spanish. However, the Federal Motor Carrier Safety Administration requires that all commercial drivers demonstrate proficiency in English to read road signs, communicate with officials, and complete logs and other paperwork.

Yes, New Jersey Motor Vehicle Commission provides accommodations for individuals with disabilities taking the Class A CDL written test. You must submit a request for special testing accommodations. This may include extended time, a separate testing area, or assistance with reading the test. It's important to communicate your needs prior to scheduling your test.

If you don't pass the Class A CDL written test in New Jersey, you can retake it. However, you must wait at least 7 days before retaking the test. There's no limit to how many times you can retake the test, but each attempt requires a testing fee. Preparation and study are key to passing on your next attempt.