Class B Driving Test | California 2025 #2

Train for FREE online with our California 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 CA 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 . Which of the following is true?

It is safe to drive on a tire that is missing one or two lug nuts.

A cracked lock ring on a rim is safe if you are not driving faster than 55 mph.

A missing clamp on a rim is dangerous and should be corrected.

Missing clamps, spacers, studs, or lugs are dangerous, as are mismatched, bent, or cracked lock rings. Be sure your tires and rims are in good condition before operating your commercial motor vehicle.

2 . When you need to stop in an emergency, you should:

Lock the wheels and skid to a stop.

Stop in a way that keeps your vehicle in a straight line.

Stop in a way that turns your vehicle.

If you need to make an emergency stop, you can use either the controlled braking method or the stab braking method. It's important to brake in a way that keeps your vehicle traveling in a straight line while still allowing you to turn, if necessary.

3 . An application pressure gauge shows:

How much air pressure is being applied to the brakes.

How much air pressure is available.

How much air pressure is required to stop a vehicle.

If a vehicle is equipped, an application pressure gauge shows how much air pressure is being applied to the brakes. This gauge can help a driver identify if their brakes are beginning to fade.

4 . Using the brakes creates heat. If too much heat is produced:

The brakes may not work.

The brakes may squeak more than usual.

The brakes will brake unevenly.

Brakes are designed to take a lot of heat, but drivers should not rely solely on the brakes to slow their vehicle. Brakes may fade and lose their ability to slow down the vehicle if they become too hot, so drivers should also rely on the engine braking effect.

5 . Texting while driving is especially dangerous because:

It is both a mental and physical distraction.

A message may be upsetting to the driver.

People like to read and may become too engaged in their phones.

Texting while driving is particularly dangerous because it is both a mental and physical distraction to the driver. In addition to diverting a driver's mental attention away from the road, texting requires a person to remove at least one hand from the vehicle's controls.

6 . Which of the following is not a cause of hydraulic brake failure?

Loss of hydraulic pressure

Brake fade on long hills

Downshifting

Most cases of hydraulic brake failure come from one of two causes. The brakes may fail due to a loss of hydraulic pressure or due to overuse on long hills, causing the brakes to fade.

7 . A danger of swerving to avoid a hazard while driving a large truck is that:

The truck may miss the object.

The truck may flip over.

The truck may stay in the same lane.

While swerving can sometimes be the safest way to handle a hazard on the roadway, doing so is not without risk. Top-heavy vehicles and tractors with multiple trailers may flip over in a swerve.

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2025 California | Frequently Asked Questions

A CDL Class B license in California allows drivers to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or tow a vehicle not heavier than 10,000 pounds. This includes buses, farm labor vehicles, and any vehicle towing a vehicle not exceeding a GVWR of 10,000 pounds.

A Class B CDL license in California allows the operation of single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or any such vehicle towing a vehicle not exceeding 10,000 pounds GVWR. This includes buses, dump trucks, delivery trucks, tow trucks, garbage trucks, and other similar vehicles.

To acquire a Class B CDL license in California, you must be at least 18 years old (21 for interstate driving), possess a valid non-commercial driver's license, pass a vision test, complete a medical examination, and successfully complete written and skills tests. You must also have a clean driving record and be able to demonstrate the ability to operate a Class B vehicle.

To qualify for a Class B CDL license in California, you must be at least 18 years old. However, you must be 21 years old or older to operate commercial vehicles across state lines or to transport hazardous materials or waste.

Yes, specific endorsements may be necessary for a Class B CDL license in California depending on the type of vehicle you plan to drive or cargo you plan to carry. For example, endorsements are required for passenger vehicles, school buses, tank vehicles, double/triple trailers, and for carrying hazardous materials.

The Class B CDL skills assessment in California includes three parts: pre-trip vehicle inspection, basic vehicle control, and on-road driving. You must show you can inspect your vehicle to ensure it's safe to drive, demonstrate that you can control the vehicle in various situations, and finally, drive safely in normal traffic conditions.

Class B CDL license holders in California are restricted to driving single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or towing a vehicle not heavier than 10,000 pounds. They cannot operate a Class A combination vehicle unless they have the appropriate endorsement.

Yes, it is possible. The California Department of Motor Vehicles (DMV) offers the written Class B CDL test in multiple languages, including Spanish. However, federal regulations require that all CDL holders understand English to a level that allows communication with the general public, comprehension of traffic signs and signals, and responses to official inquiries.

Yes, you can request accommodations for the Class B CDL written exam in California if you have a disability. The Department of Motor Vehicles (DMV) provides reasonable testing accommodations according to the Americans with Disabilities Act (ADA). This can include extended time, a quiet room, or a sign language interpreter. Contact your local DMV to discuss your needs and arrange accommodations.

Yes, you can retake the Class B CDL written test if you don't pass on your first attempt. In California, you're allowed three attempts to pass the written test within 12 months of paying the application fee. If you fail all three attempts, you must start the process over and pay a new application fee.