Combination #1
Combination Vehicles Practice Test | New Jersey 2026 #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 2026, 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.
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1 . What does the trailer air supply control look like?
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 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 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.
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 triple trailer
Triple combination trailers are most vulnerable to the "crack-the-whip" effect.
6 . What is a bobtail?
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 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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2026 New Jersey | Frequently Asked Questions
To get a CDL Tank endorsement in New Jersey, you must first hold a valid Commercial Driver's License (CDL). Next, you'll need to pass the Tank Vehicle Endorsement Knowledge Test. This test covers specific regulations and safety measures for operating tank vehicles. Once you pass the test, the endorsement will be added to your CDL.
To obtain a CDL Tank license, it's essential to have a valid Commercial Driver's License (CDL) first. Then, you must pass the Tank Vehicle Endorsement Knowledge Test, which covers specific regulations and safety measures for operating tank vehicles. Once you pass this test, the endorsement is added to your CDL.
While New Jersey doesn't mandate specific training or experience for a CDL Tank endorsement, it's recommended. Understanding the regulations and safety measures for operating tank vehicles is crucial. You must pass the Tank Vehicle Endowment Knowledge Test, which may be easier with training or experience in the field.
Yes, to acquire a CDL Tank endorsement in New Jersey, you need to pass a specific Tank Vehicle endorsement test. This written exam focuses on the unique handling and safety rules for driving a tank vehicle. It is additional to the general CDL knowledge and skills tests. Preparing for this test often involves studying the CDL Manual.
The written test for the CDL Tank endorsement covers a range of subjects related to tank vehicles. Topics include inspecting tank vehicles, driving tank vehicles, and safe driving practices. It also covers the effects of liquid surge on vehicle handling and the special precautions necessary to safely haul liquids.
The CDL Tank endorsement assessment evaluates your knowledge more than specific driving maneuvers. It focuses on understanding the unique handling characteristics of liquid cargo, such as the effects of liquid surge. It also tests your awareness of safety procedures, inspecting tank vehicles, and recognizing the need for special precautions when hauling liquids.
Yes, there are certain constraints for drivers with a CDL Tank endorsement in New Jersey. Drivers are required to follow all safety protocols for handling and transporting hazardous materials. They must also comply with federal and state regulations regarding weight limits, vehicle maintenance, and hours of service. Violation of these rules can result in penalties or loss of the endorsement.
No, you cannot legally transport liquid or gas materials without a valid CDL Tank endorsement in New Jersey. This endorsement is required for drivers operating commercial vehicles designed to transport any liquid or gaseous materials within a tank that is permanently or temporarily attached to the vehicle. Violating this can result in serious penalties.
You can add a CDL Tank endorsement to your existing commercial driver's license in New Jersey. You don't need to apply for a new license. However, you will need to pass the Tank Vehicle endorsement knowledge test and pay the required fee to add this endorsement to your current CDL.
Yes, there are specific regulations and prerequisites for handling hazardous materials with a CDL Tank endorsement in New Jersey. These include obtaining a hazardous materials endorsement, passing a written test, undergoing a background check, and completing a TSA threat assessment. Additionally, drivers must follow strict guidelines for transporting, loading, unloading, and securing hazardous materials to ensure safety and compliance with state and federal regulations.
