Knowledge Test Class B #1
Class B Driving Test | New Mexico 2026 #1 Page 6 of 7
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.
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36 . If your vehicle is hydroplaning, you should:
If your vehicle begins to hydroplane, do not apply the brakes. Instead, slow down by releasing the accelerator and pushing in the clutch.
37 . For safety purposes, when should you turn off a retarder?
Retarders are mechanisms in some vehicles that help slow a vehicle and reduce the need for braking. However, using a retarder may cause wheels to skid when they have poor traction. Turn off retarders when traveling under wet, snowy, or icy conditions.
38 . When experiencing cold weather, be sure to check your vehicle's alcohol evaporator:
An alcohol evaporator can help prevent ice from building up in an air brake system. In cold weather, the evaporator should be checked and refilled every day.
39 . The air storage tanks:
The air storage tanks in an air brake system store compressed air to be used for braking. They hold enough air for the brakes to still be used several times if the compressor stops working.
40 . In a vehicle with dual parking control valves, a separate air tank can be used:
In a vehicle with dual parking control valves, there is a separate air tank that can be used to temporarily release the spring brakes if they have been activated due to low air pressure. Pushing in the proper control will release the spring brakes for a short period of time, allowing the driver to move the vehicle in an emergency.
41 . Black ice is:
Black ice is a layer of ice that is thin and clear enough for the road to be visible through it. The surface will look like a wet road. Always be alert to black ice if the road looks wet when the temperature is below freezing.
42 . When backing a truck, you should:
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.
2026 New Mexico | Frequently Asked Questions
To acquire a CDL Passenger endorsement in New Mexico, you must first possess a valid New Mexico CDL. Then, pass the Passenger Transport Test, which covers the special rules and skills necessary for safely transporting passengers. You may also need to pass a skills test in a vehicle similar to the one you'll be driving.
To obtain a CDL Passenger license, you must have a valid CDL and be at least 21 years old. You'll need to pass the Passenger Transport written test, which covers topics like vehicle inspection, loading/unloading passengers, and emergency procedures. In some cases, a skills test in a passenger vehicle may also be required.
While New Mexico doesn't mandate specific training for a CDL Passenger endorsement, it's highly recommended. Training can help you prepare for the Passenger Transport Test and any required skills tests. Experience driving similar vehicles can also be beneficial. However, the key requirement is passing the relevant written and skills tests.
Yes, to secure a CDL Passenger endorsement in New Mexico, you'll need to pass the Passenger Vehicles endorsement written test. This test covers topics such as vehicle inspection, loading/unloading procedures, managing passengers, and emergency situations. It's designed to ensure you have the necessary knowledge to safely operate a passenger vehicle.
During the CDL Passenger endorsement assessment, you'll need to showcase skills such as pre-trip vehicle inspection, safe driving practices, proper use of mirrors, executing turns and stops smoothly, and emergency procedures. You'll also need to demonstrate understanding of special rules for buses, including loading/unloading passengers safely and securing wheelchair lifts.
No, you cannot legally transport passengers without a valid CDL Passenger endorsement in New Mexico. This endorsement is required by law for drivers who wish to operate a commercial vehicle designed to carry 16 or more passengers, including the driver. Driving without the necessary endorsement can lead to severe penalties.
Yes, you can add the CDL Passenger endorsement to your existing commercial driver's license. You don't need a new application. However, you must pass the Passenger Vehicles endorsement written test and a skills test in a passenger vehicle. It's recommended to check with the New Mexico Motor Vehicle Division for specific procedures and requirements.
Yes, there are specific restrictions for drivers with a CDL Passenger endorsement in New Mexico. Drivers are required to obey all standard traffic laws and additionally, they must not tow trailers. They're also responsible for the safety of passengers, ensuring seat belt use, and managing conduct. Overloading or operating the vehicle in a reckless or negligent manner is strictly prohibited.
Yes, there are age-related prerequisites for acquiring the CDL Passenger endorsement in New Mexico. Applicants must be at least 21 years old to drive a commercial vehicle across state lines or carry hazardous materials. However, those who are 18 years or older can obtain a CDL for in-state driving (intrastate) only.
With a CDL Passenger endorsement in New Mexico, you'll be authorized to operate a range of passenger vehicles. These include buses, shuttle vans, and other vehicles designed to carry 16 or more passengers, including the driver. This endorsement is crucial for jobs like city bus drivers, school bus drivers, and commercial bus drivers.