Knowledge Test Class B #1
Class B Driving Test | California 2025 #1 Page 6 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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36 . When you double your speed from 20 to 40 mph, your vehicle's stopping distance is:
Doubling your speed from 20 mph to 40 mph multiplies your stopping distance by four. Adjust your driving accordingly.
37 . A hazardous materials placard may be no smaller than:
Hazardous materials placards must be at least 10 ¾ square inches and turned upright on a point in a diamond shape.
38 . A pre-trip inspection should include:
When examining the engine compartment during a pre-trip inspection, you should check the engine oil level, the radiator coolant level, and the condition of the hoses.
39 . Which of the following is not part of a vehicle’s air brake system?
Components of an air brake system include an air compressor, an air compressor governor, air storage tanks, air tank drains, an alcohol evaporator, a safety valve, a brake pedal, foundation brakes, supply pressure gauges, an application pressure gauge, a low air pressure warning signal, a stop light switch, a front brake limiting valve (on some older vehicles), spring brakes, and parking brake controls.
40 . 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.
41 . Having weight loaded in a way that creates a high center of gravity:
Transporting cargo that is loaded with a high center of gravity increases the risk that the transporting vehicle will tip over. Cargo should be loaded with a safe weight distribution.
42 . 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.
2025 California | Frequently Asked Questions
To acquire a CDL Hazmat endorsement in California, you must first have a Commercial Driver's License (CDL). Then, pass the Hazardous Materials (Hazmat) Knowledge Test at a DMV office. After passing, complete a Transportation Security Administration (TSA) background check. Once cleared, take the Hazmat endorsement form to DMV to add the endorsement to your CDL.
To obtain a CDL Hazmat license in California, you need to have a valid Commercial Driver's License (CDL). You must also pass the Hazardous Materials (Hazmat) endorsement knowledge test, provide a valid Transportation Security Administration (TSA) security threat assessment (background check), and complete fingerprinting. Training on handling hazardous materials is also required.
When applying for a CDL Hazmat endorsement in California, you need to provide your current valid Commercial Driver's License (CDL), proof of U.S. citizenship or lawful permanent residency (birth certificate, passport, or green card), and a completed Medical Examination Report Form. You'll also need to pass a TSA background check and provide fingerprints.
Yes, there is a dedicated written test for the CDL Hazmat endorsement in California. This test is designed to evaluate your knowledge about the rules and regulations related to the transportation of hazardous materials. It covers topics such as loading and unloading, bulk packaging, and emergency response procedures. You must pass this test to obtain the endorsement.
The written test for the CDL Hazmat endorsement covers a variety of subjects related to hazardous materials, including: recognition and identification of hazardous materials, compliance with safety regulations, understanding shipping papers, placarding requirements, loading and unloading procedures, handling emergencies and incidents, and the rules for transporting specific types of hazardous materials.
Yes, there are extra charges associated with acquiring a CDL Hazmat endorsement. In California, you must pay a $30 testing fee. Additionally, fingerprinting for the TSA background check costs approximately $86.50. Please note that these fees are subject to change and it's advisable to check the current rates with your local DMV office.
Yes, obtaining a CDL Hazmat endorsement does require a background check and security clearance. This is mandated by the Transportation Security Administration (TSA) and involves fingerprinting and checking for any disqualifying criminal offenses. The goal is to ensure the safety and security of hazardous materials transportation. It's necessary to pass this check to receive the endorsement.
Yes, specialized training and certification are required for the CDL Hazmat endorsement. Applicants must pass a written test regarding the transportation of hazardous materials. Additionally, they must undergo a TSA background check. These requirements ensure that drivers have the necessary knowledge and skills to safely transport hazardous materials.
No, you cannot legally transport hazardous materials without a valid CDL Hazmat endorsement in California. This endorsement is required to ensure the driver's understanding of safety precautions and procedures for transporting hazardous materials. Driving without it can lead to serious legal consequences 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 license. However, you must pass a written Hazmat knowledge test and undergo a TSA background check. Once these steps are completed, the Hazmat endorsement can be added to your existing CDL.