Tank Endorsement Test | Texas 2026 #2

Train for FREE with our Texas tank endorsement practice test online. 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 TX tank 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 CDL tank vehicle endorsement may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 22

1 . Class 1, Class 2.1, and Class 3 items should not be placed in a trailer with:

A heater.

An air conditioner.

Other items.

Batteries.

The use of cargo heaters is not always permitted. When transporting materials that are categorized as Class 1 (Explosives), Class 2.1 (Flammable Gas), or Class 3 (Flammable Liquids) materials, heaters are generally prohibited.

2 . When approaching your vehicle, you should ensure that:

The vehicle is shiner than others.

The vehicle is not parked too closely to other vehicles.

There are not puddles under the vehicle that indicate a leak.

The vehicle is parked properly.

When approaching your vehicle before an inspection, make note of its general condition and ensure that it is not damaged or leaning. Look under the vehicle for fresh leaks. Check around the vehicle for hazards to movement, such as people, other vehicles, or low-hanging wires or tree limbs.

3 . Large combination vehicles take the longest amount of time to stop:

When fully loaded.

When partially loaded.

When empty.

When mostly loaded.

Large combination vehicles take longer to stop when they are empty than when they are loaded. The decreased weight causes a vehicle's wheels to have decreased traction on the surface of the road.

4 . Of the following, which is not a way to prevent drowsiness during a trip?

Getting an adequate amount of sleep before driving

Traveling with a passenger

Scheduling trips during hours when you would not normally be awake

Avoiding medications that may cause drowsiness

Driving while fatigued can be extremely dangerous. Strategies for preventing drowsiness while driving include getting a full night's sleep before a trip; having someone ride with you so you can take turns driving; scheduling trips for times during which you are normally awake; and avoiding medications that may cause drowsiness.

5 . How should you check your hydraulic brakes?

Pump the brakes three times, then apply firm pressure to the brake pedal for five seconds. The brake pedal should not move.

Pump the brakes three times, then apply firm pressure to the brake pedal for five seconds. The brake pedal should slowly move toward the floor.

Pump the brakes three times, then apply firm pressure to the brake pedal for five seconds. The brake pedal should slowly rise.

Pump the brakes three times, then apply firm pressure to the brake pedal for five seconds. The brake pedal should be easy to push to the floor.

To test hydraulic brakes, you should pump the brake pedal three times, then apply firm pressure to the brake pedal and hold for five seconds. The pedal should not move. If it does, there may be a leak.

6 . When driving a bobtail tractor, you should be aware that:

Bobtails stop very easily.

Bobtails cannot drive as fast as tractors with semitrailers.

Bobtails are more difficult to stop than tractors with semitrailers.

Bobtails are illegal in most states.

Bobtail tractors are tractors that are not attached to any semitrailers. When operating a bobtail, you should be aware that stopping can be difficult and that it will take a longer distance to bring the bobtail to a complete stop than it would a tractor attached to a loaded semitrailer.

7 . When loading or unloading explosive materials, you should:

Keep the engine running.

Turn off the engine.

Use sharp-pointed tools to open the packages.

Toss packages.

Always turn off your vehicle's engine before loading or unloading explosive materials. Never drop, throw, or roll packages containing explosives.

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2026 Texas | Frequently Asked Questions

To acquire a CDL Tank endorsement in Texas, you must already have a Commercial Driver's License (CDL). Then, you need to pass the Tank Vehicle (N) endorsement knowledge test at your local Department of Public Safety (DPS) office. You should study the Texas CDL Handbook to prepare for this test.

Obtaining a CDL Tank license requires you to first have a Commercial Driver's License (CDL). You must then pass the Tank Vehicle (N) endorsement knowledge test. It's essential to study the related sections in the CDL Handbook before taking the test. You may also need to undergo a background check depending on the type of materials you will be transporting.

While Texas doesn't require specific training or experience for a CDL Tank endorsement, it's highly recommended to prepare for the Tank Vehicle (N) endorsement knowledge test. You can self-study using the Texas CDL Handbook. However, many choose to attend a training program to gain practical skills and knowledge, which could increase chances of passing the test.

Yes, to obtain a CDL Tank endorsement in Texas, you must pass the Tank Vehicle (N) endorsement knowledge test. This written test focuses on the handling and transportation of liquid cargo. The specific content and number of questions can vary, so it's best to prepare using resources like the Texas CDL Handbook.

The written test for the CDL Tank endorsement in Texas includes subjects such as inspecting and driving tank vehicles, safe driving practices, cargo handling and emergency procedures, and specific knowledge related to transporting liquids and gases.

The CDL Tank endorsement assessment primarily focuses on knowledge rather than specific maneuvers. You'll need to understand the inspection of tank vehicles, specifics of driving high center of gravity vehicles, safe driving practices, and how to handle emergencies. There's no specific skills test or road test for the Tank endorsement like there is for the basic CDL.

Drivers with a CDL Tank endorsement must adhere to all federal and state regulations related to transporting liquids. This includes weight limits, proper securing of cargo, and handling of hazardous materials if applicable. Furthermore, they may be subject to more frequent inspections. Violations can result in fines, CDL suspension or revocation.

No, it's illegal to transport liquid or gas materials in a tank vehicle without a valid CDL Tank endorsement. This rule applies to vehicles designed to transport 1,000 gallons or more. Violation can result in hefty fines, legal penalties, and potential suspension or revocation of your CDL. Always ensure your endorsements are up-to-date before transporting such materials.

The CDL Tank endorsement can be added to your current Commercial Driver's License (CDL). You don't need to apply for a new CDL. However, you will need to pass the Tank Vehicle endorsement knowledge test. Once you pass the test, your CDL will be updated with the Tank endorsement.

Yes, there are specific regulations and prerequisites for handling hazardous materials with a CDL Tank endorsement in Texas. These include obtaining a hazardous materials endorsement, passing a background check, completing specialized training, and adhering to strict safety protocols when transporting, loading, and unloading hazardous materials.