Combination Vehicles Practice Test | New Hampshire 2026 #2

Train for FREE online with our New Hampshire 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 NH 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.

Number of Question 20

Passing Score 16

Number of Tests 20

1 . Pushing in the trailer air supply control will:

Supply the trailer with air.

Deactivate the air brakes.

Prevent the vehicle from skidding.

Push in the trailer air supply control to supply the trailer with air. Pull out the trailer air supply control to turn off the air supply and activate the emergency brakes.

2 . When a combination vehicle goes around a corner:

The turn should be made as tightly as possible.

The front and rear wheels move in different paths.

The rear wheels should run over the curb.

It is acceptable for street signs to be knocked over if they are too close to the road.

When a vehicle goes around a corner, the rear wheels follow a different path than the front wheels. This is called off-tracking. This effect is especially pronounced on vehicles with trailers.

3 . When backing a trailer, how should you turn the steering wheel?

Turn the top of the steering wheel in the direction you want the trailer to go.

Turn the top of the steering wheel in the direction opposite of where you want the trailer to go.

It doesn’t matter.

It depends on where the trailer is being backed.

When backing with a trailer, turn the top of the steering wheel in the direction opposite of where you want to go. Once the trailer begins turning, you should then switch the direction of the steering wheel to follow the trailer.

4 . After connecting the air lines to the trailer while coupling, you should:

Supply air to the trailer.

Chock the wheels.

Inspect the fifth wheel.

Connect the electrical cord.

Correctly following the steps to couple and uncouple trailers is vital to safely operating a combination vehicle. After connecting the air lines to the trailer while coupling, you should supply air to the trailer.

5 . When entering or crossing traffic while driving a combination vehicle, it is especially important that you:

Sound your horn.

Make sure there is a large enough gap for your vehicle.

Expect other drivers to make room for your vehicle.

Let other drivers wave you into their lane.

Combination vehicles require more space on the road than other vehicles. When entering or crossing traffic while driving a combination vehicle, it is especially important that there is a large enough gap in traffic for you to safely do so.

6 . What does an Anti-Lock Braking System (ABS) do?

It allows a vehicle's wheels to lock up.

It prevents a vehicle's wheels from locking up.

It makes turning a vehicle easier.

An Anti-Lock Braking System (ABS) helps prevent wheel lockup during hard braking. If ABS detects impending lockup, it reduces braking pressure to a safe level.

7 . In an empty combination vehicle, the stiff suspension springs and strong brakes will have:

High traction.

Low traction.

No traction.

An empty combination vehicle will come to a complete stop more slowly than a fully-loaded vehicle. With less weight in a trailer, the stiff suspension springs and strong brakes will have lower traction than they would if the vehicle carried more weight.

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2026 New Hampshire | Frequently Asked Questions

To obtain a CDL Tank endorsement in New Hampshire, you must first have a valid Commercial Driver's License (CDL). Next, study the relevant section in the NH CDL manual, then schedule and pass the tank vehicle endorsement knowledge test at a DMV office. A fee will be charged for taking the test and adding the endorsement to your CDL.

To obtain a CDL Tank license in New Hampshire, you must first have a Commercial Driver's License (CDL). Then, you need to pass the Tank Vehicle endorsement test. This test covers knowledge on inspecting tank vehicles, driving tank vehicles, and safe driving rules. You must also be at least 21 years old for interstate driving.

While New Hampshire does not mandate specific training for a CDL Tank endorsement, having practical experience can be beneficial. However, it's crucial to study the Tank Vehicles section of the NH CDL manual. This will prepare you for the tank vehicle endorsement knowledge test, which you must pass to obtain the endorsement.

Yes, to get a CDL Tank endorsement in New Hampshire, you must pass the tank vehicle endorsement knowledge test. This is an additional written exam focused on the specific knowledge and skills needed for driving tank vehicles. It covers topics like inspecting tank vehicles, driving tank vehicles, and safe driving rules.

The written test for the CDL Tank endorsement in New Hampshire covers various subjects related to tank vehicles. It includes understanding bulk tanks, inspecting tank vehicles, safe driving rules, handling high center of gravity, managing surge, and emergency procedures. The aim is to ensure you're knowledgeable and competent in driving tank vehicles safely.

The CDL Tank endorsement written test in New Hampshire focuses on knowledge rather than specific maneuvers. It evaluates your understanding of inspecting tank vehicles, driving tank vehicles, and recognizing high center of gravity and its effects. It also tests knowledge about bulkheads, baffles, surge, and how to handle leaks or spills.

Yes, drivers with a CDL Tank endorsement must adhere to specific rules and regulations. For instance, they must follow the hazardous materials regulations if their tank contains such substances. Also, they are required to take adequate breaks to avoid fatigue. Overloading the tank beyond its capacity is also prohibited. Violating these rules can lead to penalties or revocation of the endorsement.

No, a valid Commercial Driver's License (CDL) with a Tank Vehicle endorsement (N) is required to transport liquid or gas materials in a tank vehicle in New Hampshire. This applies to tank vehicles designed to carry liquids or gases with an individual rated capacity of more than 119 gallons and an aggregate rated capacity of 1,000 gallons or more. Violating this rule can lead to legal penalties.

Yes, the CDL Tank endorsement can be added to your current commercial driver's license. It doesn't require a fresh application for a new license. However, you will need to pass the Tank Vehicle Endorsement Knowledge Test and pay the necessary fees. Remember, you must have a valid CDL to add any endorsements in New Hampshire.

Yes, handling hazardous materials with a CDL Tank endorsement in New Hampshire requires additional certification. You must obtain a Hazardous Materials (HazMat) endorsement. This involves passing a knowledge test, a TSA background check, and a fingerprinting process. It ensures you understand the safety procedures and protocols for handling hazardous materials.