Class B Driving Test | Oklahoma 2025 #1

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

1 . Braking mechanisms are located inside:

The fifth wheel.

A brake drum.

The landing gear.

Drum brakes are attached to the wheels and located on the axles of a vehicle. The braking mechanisms that cause the vehicle to stop can be found inside of a drum brake.

2 . Wheel rims that have been welded should:

Be painted.

Be placed on tires in the rear of the vehicle.

Not be used.

Wheels or rims that have had welding repairs are not safe to be used.

3 . Which of the following is not a type of tie-down equipment?

Ropes

Straps

Velcro

You must use the proper number of tie-downs when securing cargo on a flatbed trailer. Examples of tie-down equipment includes ropes, straps, and chains.

4 . If you plan to transport hazardous materials, you will:

Need to obtain a hazardous materials endorsement.

Need to drive while using flashing lights.

Need to wear a gas mask.

You must have a hazardous materials endorsement to transport any hazardous materials that require the vehicle to be placarded.

5 . When starting your vehicle, the coolant temperature should:

Not change.

Increase gradually.

Quickly jump from low to high.

Watch the gauges in your vehicle before starting a trip. After starting your vehicle's engine, the coolant temperature should begin a gradual rise to the normal operating range.

6 . When loading a trailer, the heaviest cargo should be placed:

On top of the lightest parts of the cargo.

Under the lightest parts of the cargo.

At the rear of the trailer.

It is important that vehicles are not top-heavy, if at all possible. A top-heavy vehicle is at an increased risk of rollover. Place the heaviest pieces of cargo underneath lighter pieces of cargo.

7 . If you are driving in fog, you should not:

Turn on the four-way flashers.

Slow down.

Use your high beam lights.

If you must drive in fog, be sure to slow down. Turn on your flashers and low beam headlights.

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To Pass 50

4.58 out of 5 based on 60 votes

2025 Oklahoma | Frequently Asked Questions

To acquire a CDL Hazmat endorsement in Oklahoma, you must first have a valid Oklahoma CDL. Then, pass the Hazmat knowledge test at a Department of Public Safety testing facility. After passing the test, submit a fingerprint-based background check and complete TSA security threat assessment. Once approved, your endorsement will be added to your CDL.

To obtain a CDL Hazmat license, you must have a valid Commercial Driver's License (CDL). You must be at least 21 years old and a U.S. citizen or have legal status in the U.S. You need to pass the Hazmat knowledge test and complete a Transportation Security Administration (TSA) background check, including fingerprinting.

When applying for a CDL Hazmat endorsement, you'll need to provide proof of U.S. citizenship or legal status (like a passport or birth certificate), your current Commercial Driver's License (CDL), and proof of Oklahoma residency. You'll also need to bring your TSA background check results and the proof that you've passed the Hazmat Knowledge Test.

Yes, there is a dedicated written test for the CDL Hazmat endorsement. It's called the Hazmat Knowledge Test and is required by the Federal Motor Carrier Safety Administration. This test covers topics like loading and unloading hazardous materials, bulk packaging marking, driving and parking rules, and emergency response procedures.

The written test for the CDL Hazmat endorsement covers topics such as identifying hazardous materials, understanding shipping papers, using placards and labels, loading and unloading hazardous materials, driving and parking rules, emergency procedures, and understanding the risks of different types of hazardous materials.

Yes, acquiring a CDL Hazmat endorsement involves extra charges. In addition to the standard CDL license fee, there is a separate fee for the Hazmat endorsement. This covers the cost of the knowledge test and background check. The exact amount can vary, so it's advisable to check with the Oklahoma Department of Public Safety for current fees.

Yes, obtaining a CDL Hazmat endorsement requires a federal background check and security clearance. This includes fingerprinting and checks for criminal history. The Transportation Security Administration (TSA) conducts this process to ensure that hazardous materials are transported safely and securely across the nation's highways.

Yes, specialized training is required for the CDL Hazmat endorsement. Applicants must pass a written test covering hazardous materials regulations and safety procedures. Also, they must undergo a federal background check and fingerprinting. The endorsement will only be added to your CDL after successful completion of these requirements.

No, you cannot transport hazardous materials without a valid CDL Hazmat endorsement. This endorsement is required by federal law for drivers who operate vehicles carrying hazardous materials. Driving without this endorsement can lead to serious penalties, including fines and suspension of your commercial driver's license.

Yes, you can add the CDL Hazmat endorsement to your current CDL license. You don't need to apply for a new CDL. However, you must pass a written knowledge test on hazardous materials regulations and safety protocols, and complete a TSA background check before the endorsement is added to your license.