Knowledge Test Class B #2
Class B Driving Test | California 2025 #2 Page 2 of 7
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.
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8 . If a tire fails, you should:
Braking after a tire fails can result in a loss of control. Stay off your brakes, if possible, until your vehicle has slowed considerably.
9 . If there is a fire in your vehicle, you should not:
In the event of a vehicle fire, you should leave the road and stop in an open area. Do not pull into a service station as fuels at the service station could catch fire. Report the fire and your location to emergency services.
10 . If using spring brakes when hauling a heavy load, a complete stop will:
Spring brakes do not work on all axles. If your vehicle's spring brakes activate due to low pressure in an air brake system, your vehicle will need a longer distance to stop than usual, especially if you are carrying a heavy load.
11 . To inspect slack adjusters on S-cam brakes, you need to:
Check each slack adjuster after parking on level ground, setting wheel chocks, and disengaging the parking brake. Pull the slack adjusters to make sure they do not move more than about one inch from where the push rod is attached. If they move more than one inch, they may be out of adjustment and will need to be fixed.
12 . When you are about to start down a hill, you should switch into a ____ gear.
Before starting down a hill, be sure to switch into a low gear. Gravity will increase your vehicle's speed as you travel downhill.
13 . A commercial motor vehicle driver:
If you choose to use a mobile phone while operating a CMV, you may only use a hands-free mobile phone that is located close to you. However, even a hands-free mobile phone can be a dangerous distraction while driving. Make sure you are aware of all cell phone laws in the state in which you are driving.
14 . During a walk-around inspection, ensure there are no cracks on the brake drums that are more than ____ of the width of the friction area.
Before beginning a trip, it is important to check the brake drums during your walk-around inspection. It is unsafe to drive if any brake drum has a crack more than one half of the width of the friction area.
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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.
