If your vehicle begins to hydroplane, do not apply the brakes. Instead, slow down by releasing the accelerator and pushing in the clutch.

Put the vehicle in a higher gear.

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.

When you are carrying a heavy load

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.

Hold enough air for the brakes to be used several times if the compressor stops working.

Hold only enough air for one braking cycle.

Hold enough air for the brakes to be used several times if the compressor stops working.

Do not hold air unless there is an emergency.

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.

To temporarily release the spring brakes.

To make the air brakes work more effectively.

To temporarily release the spring brakes.

To charge the brakes on the rear trailer.

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.

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

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

Class B Driving Test | New Mexico 2024 #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 2024, 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

Class B Driving Test | New Mexico 2024 #1 Page 6 of 7

36 . If your vehicle is hydroplaning, you should:

37 . For safety purposes, when should you turn off a retarder?

38 . When experiencing cold weather, be sure to check your vehicle's alcohol evaporator:

39 . The air storage tanks:

40 . In a vehicle with dual parking control valves, a separate air tank can be used:

41 . Black ice is:

42 . When backing a truck, you should:

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