Class B Driving Test | New Mexico 2026 #2

Train for FREE online with our New Mexico class B license 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 NM CDL class B permit 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 CDL class B requirements may vary from state to state.

Number of Question 50

Passing Score 40

Number of Tests 20

1 . Which of the following determines your blood alcohol concentration (BAC)?

How much you drink

How frequently you drink

The temperature of the drink

The main factors that determine a person's blood alcohol concentration (BAC) are how much alcohol has been consumed, how quickly it was consumed, and the person's body weight.

2 . Which of the following is not a sign of fatigue?

Difficulty focusing, with frequent blinking

Yawning repeatedly or rubbing eyes

Staying in your lane

Potential warning signs of fatigue include difficulty focusing, frequent blinking, or heavy eyelids; yawning repeatedly or rubbing your eyes; daydreaming; wandering or disconnected thoughts; trouble remembering the last few miles you've driven; missing exits or traffic signs; having trouble keeping your head up; drifting from your lane; following too closely; hitting a shoulder rumble strip; or feeling restless and irritable.

3 . Driving at night is:

Safer than driving during the day.

Just as safe as driving during the day.

More dangerous than driving during the day.

Driving at night is more dangerous than driving during the day because hazards become more difficult to see in the dark.

4 . In a dual air brake system:

Air tanks are shared between both systems.

Each system has its own air tanks.

You must designate which system you are using.

There are two air brake systems in a dual air brake system. The systems share a set of brake controls, but each system has its own tanks, hoses, and lines.

5 . Slow down and be extra careful:

When traveling in normal traffic.

When driving on dry pavement.

When approaching a work zone.

Slow down and be especially careful when driving in and around work zones, in places where the pavement drops off sharply at the edge of the road, when foreign objects are present on the road, and on freeway on- and off-ramps.

6 . When backing a truck, you should:

Only use the side mirrors on the driver’s side.

Use both side mirrors.

Only use the side mirrors on the passenger's side.

Backing a commercial motor vehicle is always dangerous because you cannot see everything behind you. When backing, make frequent checks of the mirrors on both sides of the vehicle.

7 . On flat surfaces, wheel chocks:

Can be used to prevent a parked vehicle from moving.

Make it easier for a parked vehicle to roll.

Should only be used on the front driver's side tire.

In situations where a driver cannot use a parking brake, wheel chocks can be used to hold a parked vehicle in place on a level surface.

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2026 New Mexico | Frequently Asked Questions

To acquire a CDL Tank endorsement in New Mexico, you need to pass the Tank Vehicle section of the New Mexico CDL test. You must also possess a valid New Mexico commercial driver's license (CDL). Studying the CDL manual and taking practice tests can help prepare you for the examination. Ensure to pay the required fees for testing and endorsement.

To obtain a CDL Tank license, you must hold a valid CDL. You'll need to pass the Tank Vehicle section of your state's CDL exam. Preparation involves studying your state's CDL manual, particularly the sections dedicated to tank vehicles. Also, ensure you meet any physical requirements and pay necessary fees for testing and obtaining the endorsement.

While specific training is not legally required to obtain a CDL Tank endorsement, it's highly recommended. Experience driving similar vehicles can be beneficial. You must pass the Tank Vehicle section of the CDL exam, so studying the CDL manual and taking practice tests will be crucial. Training can help you gain practical skills and knowledge to pass the exam.

Yes, to get a CDL Tank endorsement, you must pass the Tank Vehicle section of the CDL exam. This is an additional written test that covers specific knowledge related to operating tank vehicles, such as handling high center of gravity and inspecting tank vehicles. The test is separate from the general CDL exam and specific to your state's regulations.

The CDL Tank endorsement written test covers specific knowledge related to operating tank vehicles. Topics include: understanding bulk tanks, inspecting tank vehicles, driving tank vehicles (including high center of gravity handling), and safe loading and unloading procedures. The test is designed to ensure drivers can safely operate these types of commercial vehicles.

The CDL Tank endorsement doesn't involve a specific skills or maneuvers assessment. The endorsement is based on a written test only. However, the general CDL skills test, which you must pass prior to any endorsement tests, evaluates your ability to inspect your vehicle, basic control skills, and on-road driving, which would apply to tank vehicles as well.

Drivers with a CDL Tank endorsement must comply with federal and state-specific regulations for transporting hazardous materials. They must ensure the tank's weight does not exceed the vehicle's Gross Vehicle Weight Rating. Also, they must understand how to handle different liquid cargos safely, and know how to respond in case of emergencies or spills.

No, you cannot transport liquid or gas materials without a valid CDL Tank endorsement. The endorsement is required for drivers who operate commercial motor vehicles that are designed to transport any liquid or gaseous materials within a tank or tanks having an individual rated capacity of more than 119 gallons and an aggregate rated capacity of 1,000 gallons or more.

The CDL Tank endorsement can be added to your current CDL license without needing a fresh application. You'll need to pass the Tank Vehicle written test. Once you pass the test, the endorsement will be added to your existing CDL. Remember, fees may apply for adding endorsements.

Yes, specific regulations are in place for handling hazardous materials with a CDL Tank endorsement. In addition to the tank endorsement, you will need a Hazardous Materials (HazMat) endorsement. This requires passing a written test, a TSA background check, and adhering to stringent safety regulations due to the potential risks associated with transporting hazardous materials.