Class B Driving Test | Utah 2025 #1

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

When the roadways are slippery

When you are carrying a passenger

When you are carrying a heavy load

When driving in heavy traffic

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.

2 . The most important reason to inspect your vehicle before a trip is:

To ensure safety.

To maximize gas mileage.

To wake up before the drive.

To fill up time.

The most important reason to inspect your vehicle before a trip is to ensure the safety of yourself and others on the road. Safety inspections before every trip are required by state and federal laws.

3 . A one-way check valve:

Drains the water and compressor oil from the air tanks.

Prevents air from escaping if the air compressor has a leak.

Activates the emergency brakes when there is a leak.

Holds the spring brakes in position until they are used.

A one-way check valve is required to be between an air compressor and the first main reservoir. This valve prevents air from escaping the system if the air compressor develops a leak.

4 . Tires of mismatched sizes:

May be used on a tractor.

May be used on a trailer.

Should be used in adverse weather conditions.

Should not be used on a vehicle.

Having tires of mismatched sizes on a vehicle is a problem that should be fixed if discovered during a vehicle inspection.

5 . If trying to correct a drive-wheel braking skid, the driver should:

Accelerate.

Countersteer.

Engage the emergency brake.

To correct a drive-wheel braking skid, you should first remove pressure from the brake pedal to allow the locked wheels to begin rolling again. Quickly steer in the direction you want to go, then countersteer to prevent your vehicle from skidding in the opposite direction.

6 . A rear tire with a tread depth of 1/32 an inch is acceptable.

True

False

Tires need to have at least 4/32 of an inch of tread depth in every major groove on the front tires, and at least 2/32 of an inch of tread depth on other tires.

7 . The minimum age someone may be to apply for a CDL is 18 years old.

True

False

You must be at least 18 years old to apply for a CDL. However, you must be at least 21 years old to drive in interstate commerce, as well as to have a hazardous materials, passenger, or school bus endorsement.

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2025 Utah | Frequently Asked Questions

To secure a CDL Doubles/Triples endorsement in Utah, you first need a valid Commercial Driver's License (CDL). Next, study the Doubles and Triples section of the Utah CDL handbook. Then, schedule and pass the Doubles/Triples knowledge test at a Driver License Division office. After passing the test, you'll receive your endorsement. Remember, driving experience with these types of vehicles is beneficial.

To obtain a CDL Doubles/Triples license, you need a valid Commercial Driver's License (CDL). Study the Doubles and Triples section of your state's CDL handbook. Then, schedule and pass the Doubles/Triples knowledge test at your local driving license office. Upon passing, you will receive your endorsement. It's also recommended to have hands-on experience with these types of vehicles.

While it's not a legal requirement to have specialized experience or training for a CDL Doubles/Triples endorsement, it's highly recommended. This is because driving these types of vehicles requires specific skills. Studying the Doubles/Triples section of the CDL handbook and passing the knowledge test is mandatory, but practical experience can significantly improve safety and confidence.

Yes, to receive a CDL Doubles/Triples endorsement in Utah, you must pass an additional written knowledge test specifically for Doubles/Triples. This test covers the special procedures and safety considerations associated with operating these types of vehicles. It is separate from the general CDL written test. You can prepare by studying the Doubles/Triples section of your state's CDL handbook.

For the CDL Doubles/Triples endorsement, there isn't a specific skills or maneuvers test as there is with the basic CDL. The endorsement only requires a written knowledge test. However, the test will cover topics like coupling and uncoupling, inspecting doubles and triples, and managing the vehicles during different situations. These are skills you'll need to safely operate these vehicles.

No, it is not permissible to operate double or triple trailers without a valid CDL Doubles/Triples endorsement in Utah. The endorsement is required by federal and state law to ensure that drivers have the necessary skills and knowledge to safely operate these types of vehicles. Driving without the appropriate endorsement can result in fines and penalties.

You can append the CDL Doubles/Triples endorsement to your current commercial driver's license. You don't need to initiate a new application for a CDL. However, you'll need to pass the Doubles/Triples knowledge test. After passing, the endorsement will be added to your existing CDL. Remember, there's no skills test for this endorsement in Utah.

Yes, there are some limitations for drivers with a CDL Doubles/Triples endorsement. For instance, they can only drive vehicles that their base CDL allows. Additionally, all federal and state regulations regarding hours of service, vehicle maintenance, and safety inspections must be followed. Violating these rules can result in penalties or loss of the endorsement.

In Utah, double trailers can be up to 81 feet long and triple trailers up to 105 feet long. The maximum weight for both is 129,000 pounds. However, these limits can vary depending on the specific highways and routes used. Drivers should always check local regulations and restrictions before operating these types of vehicles.

Yes, drivers with a CDL Doubles/Triples endorsement must follow specific safety guidelines. These include checking that all couplings are secure, maintaining extra following distance, and taking wider turns to avoid trailer off-tracking. Also, they must be aware of the "crack-the-whip" effect, which can cause a rollover. Federal regulations also apply, such as hours-of-service rules.