If you are found to be operating a CMV with any detectable amount of alcohol in your system, but you are still below the legal limit of 0.04 percent, you will be placed out-of-service for 24 hours. It is both illegal and dangerous to operate a motor vehicle while under the influence of alcohol.

Put out-of-service for 24 hours.

Required to drive at speeds below 55 mph.

After changing a tire, you should stop after driving for a while to recheck the tightness of the lug nuts.

The driver should stop to make sure the lug nuts are still tight after driving for a bit.

The driver should repair the brakes.

The driver should deflate the tire to 10 psi.

The driver should inflate the tire.

Drivers who are holding conversations with others may not be paying full attention to the road and may make unsafe moves. Children do not always pay attention to traffic and may dart into the road without looking. Exercise caution when driving near road workers. This helps to keep the workers and other distracted drivers safe.

A person sitting on a bench waiting for a bus

A driver talking to another person in a vehicle

Children on the side of the road

Construction workers on the side of the road

A person sitting on a bench waiting for a bus

Underloading a front axle may make it impossible to safely steer your vehicle. Keep weight distribution in mind when loading cargo.

Is discouraged as it can cause steering problems.

Is important for smooth steering.

Is encouraged as front axles are usually less strong than other axles.

Is discouraged as it can cause steering problems.

Is discouraged as it can improve fuel efficiency.

When inspecting a vehicle, you should ensure that dual tires do not come into contact with each other or with other parts of the vehicle. Tire sizes should not be mismatched, and tires should not be cut or damaged in any way. Regrooved, recapped, or retreaded tires are not permitted to be used on the front wheels of a bus.

Dual tires that do not come into contact with each other

Tires of mismatched sizes if used only on short trips

Retreaded tires on the front of a school bus

Class B Driving Test | Utah 2026 #1 Page 7 of 7

Train for FREE online with our Utah 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 UT 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

Class B Driving Test | Utah 2026 #1 Page 7 of 7

43 . If a CMV driver operates a CMV with a detectable blood alcohol concentration (BAC) that is lower than 0.04 percent, they will be:

44 . What should be done shortly after a tire has been changed?

45 . Which of the following is not an example of a distracted person that motorists should be worried about?

46 . An underloaded front axle:

47 . The person resonsible for a vehicle's safe operation is the shipper.

48 . Which of the following is acceptable?

49 . When should mirrors be adjusted?

50 . The most important reason to do a pre-trip inspection is that it helps ensure safety.

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