Radial and bias-ply tires should not be used together. All wheels on a vehicle should be the same style and equally-sized.

Should be used together on the front of a vehicle.

In general, you should always use the parking brake when parking your vehicle. However, you should not apply the parking brake if your brakes are very hot or if your brakes are wet and temperatures are below freezing.

The parking brake should be used.

The parking brake only needs to be used if the vehicle is parked on a slope.

The parking brake should not be used, as it can damage the tires.

If you must drive so slowly that you will impede the flow of traffic, you should turn on your four-way flashers to alert drivers behind you (as long as local laws allow the use of flashers).

Drive while using your four-way flashers.

Drive without using any lights.

If the coolant temperature gauge goes above the highest safe temperature, you should stop driving as soon as possible and try to figure out what is wrong. There could be an issue in your vehicle that could lead to engine failure and possibly a fire.

Pull over and figure out what's wrong.

Once you have begun to drive after a tire has been changed, you should stop after a short distance to recheck the tightness of the lug nuts.

Ensure that the lug nuts are still tight.

Ensure that the tire is wearing evenly.

Ensure that the air pressure of the tire is still acceptable.

Federal, state, and local regulations governing commercial vehicle loads vary from place to place. Be sure that you are always aware of the laws for the state in which you are driving.

The laws of the state in which the vehicle is physically located take precedence.

The laws of the state where the trip originated take precedence.

The laws of the state in which the vehicle is physically located take precedence.

The driver can choose which state’s laws to follow.

Because live animals can lean during curves, and otherwise move in transit, the weight distribution of a cargo of livestock is unstable. Driving with livestock requires special care.

Can create unstable driving conditions.

Should never be carried on a trailer.

Should be placed in the front of a trailer.

Can create unstable driving conditions.

Class B Driving Test | Oklahoma 2025 #1 Page 7 of 7

Train for FREE online with our Oklahoma 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 OK 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 | Oklahoma 2025 #1 Page 7 of 7

43 . Radial and bias-ply tires:

44 . When leaving your vehicle unattended:

45 . If driving so slowly that you could impede other drivers, you should:

46 . If the coolant temperature gauge goes above the highest safe temperature, you should:

47 . Once they have begun to drive after a tire on their vehicle has been changed, a driver should stop after a short distance to:

48 . Regulations regarding commercial vehicle weight and load securement may vary from state to state. Regarding these regulations:

49 . Livestock:

50 . To make a stop in a vehicle equipped with air brakes, the driver should:

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