In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 60 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.

When tank pressure falls below 60 psi.

When tank pressure falls below 120 psi.

When tank pressure falls below 60 psi.

When tank pressure falls below 10 psi.

When tank pressure falls below 5 psi.

Before slowing down, it is a good idea to flash your brake lights by lightly tapping your brake pedal a few times. This will warn drivers behind you of your plans to slow down.

Tapping the brakes a few times and before braking.

Turning on one set of turn signals.

Putting your hand out the driver's side window and waving.

Maximum axle weights are often set by a bridge formula, which sets a lower maximum weight for axles that are close together.

Permits less weight per axle for axles that are close together.

Permits more weight for trucks.

Be careful around pedestrians, joggers, and cyclists who are wearing headphones. They may be unable to hear your vehicle approaching and may do dangerous things because they do not know you are there.

May not be aware of what is happening around them.

Is probably aware of what is happening around them.

May not be aware of what is happening around them.

Can hear the sounds of traffic.

Front-end header boards, also known as "headache racks," protect the driver from cargo moving in the event of a crash or emergency stop.

Help protect the driver from the cargo.

Allow for increased cargo space.

Class B Driving Test | Wyoming 2025 #1 Page 6 of 7

Train for FREE online with our Wyoming 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 WY CDL class B permit in 2025, 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 | Wyoming 2025 #1 Page 6 of 7

36 . A low air pressure warning signal should activate:

37 . If you plan to slow down, you can warn drivers behind you by:

38 . During a static leakage test, the maximum leakage rate for a triple combination vehicle with air brakes is ____ in a minute.

39 . A bridge formula:

40 . In a dual air brake system, air pressure should build from 85 to 100 psi within ____ seconds.

41 . A jogger wearing a stereo headset:

42 . Headache racks:

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