Knowledge Test Class B #1
Class B Driving Test | California 2026 #1
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 2026, 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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1 . If required to complete a vehicle inspection report in writing, the report must be signed:
You must sign a written vehicle inspection report only if defects were noted and certified to be repaired, or if repairs are not needed.
2 . Which of the following is not required safety equipment for a commercial motor vehicle?
Emergency equipment that is required for commercial vehicles includes at least one fire extinguisher; spare electrical fuses, unless the vehicle is equipped with circuit breakers; and warning devices for parked vehicles, such as warning triangles, fuses, or liquid burning flares.
3 . Routine vehicle inspections should be done to ensure:
The most important reason to inspect your vehicle is to ensure the safety of yourself and other road users.
4 . If an air compressor is belt-driven, the belt should be routinely checked to ensure that it is:
If your vehicle has air brakes, the air compressor drive belt should be checked before each drive. Check the tightness of the belt and verify that it is in good condition.
5 . To avoid a hazard:
In some emergencies, the best strategy for avoiding a hazard may be to drive onto the shoulder. Most shoulders are strong enough to support the weight of a large vehicle.
6 . What tells you how much pressure is in your vehicle's air tanks?
A vehicle that is equipped with air brakes must also be equipped with a supply pressure gauge. This gauge tells the driver how much air pressure is in each of the vehicle's air tanks.
7 . Using the brakes creates heat. If too much heat is produced:
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.
See the exact questions that will be on the 2026 California DMV exam.
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2026 California | Frequently Asked Questions
To obtain a CDL Tank endorsement in California, you must first have a Commercial Driver's License (CDL). Then, study the California CDL handbook's section on Tank Vehicles to prepare for the written test. Schedule and pass the written test at your local DMV. Once passed, you'll receive your Tank endorsement, allowing you to drive commercial tank vehicles.
To obtain a CDL Tank license, it's essential to first have a Commercial Driver's License (CDL). You must also study the tank vehicle section of the CDL handbook, pass a written test specific to tank vehicles, and pay the required fees. Knowledge of inspection procedures, driving techniques, and handling emergencies is crucial.
While California doesn't specifically mandate training or experience for a CDL Tank endorsement, it's highly recommended. Understanding the operation of tank vehicles, safety procedures, and how to handle emergencies is crucial. Studying the tank vehicle section of the CDL handbook and gaining practical experience will greatly improve your chances of passing the endorsement test.
Yes, to obtain a CDL Tank endorsement in California, you must pass the Tank Vehicle endorsement test. This written exam covers topics such as the inspection of tank vehicles, driving tank vehicles, and safe driving rules. It's an additional test beyond the general CDL exam and is required for the endorsement.
The written test for a CDL Tank endorsement covers subjects such as inspecting tank vehicles, safe driving for tank vehicles, and handling emergencies. This includes understanding the high center of gravity in these vehicles, the impact of liquid surge on vehicle control, and procedures for loading and unloading. Knowledge of specialized laws relating to tank vehicles is also tested.
The CDL Tank endorsement assessment doesn't involve a specific skills test or maneuvers like the basic CDL exam. Instead, it focuses on a written test that assesses your understanding of tank vehicle operations. This includes knowledge of safe driving techniques, handling liquid surge, emergency procedures, and how to properly inspect and maintain tank vehicles.
Yes, drivers with a CDL Tank endorsement must follow specific rules. These include weight restrictions for the vehicle, following hours of service regulations, and restrictions on hazardous materials transport if the driver doesn't hold a Hazmat endorsement. Violations can lead to CDL disqualification. It's crucial to understand and follow these regulations to maintain the endorsement.
No, drivers cannot transport liquid or gas materials without a valid CDL Tank endorsement. This endorsement is required for operating a commercial vehicle that is designed to transport any liquid or gaseous materials within a tank or tanks having an individual rated capacity of more than 119 gallons and an aggregate rated capacity of 1,000 gallons or more.
The CDL Tank endorsement can be added to your existing CDL. You don't need to apply for a new license. However, you will need to pass the Tank Vehicle written knowledge test. Once you pass, the Tank endorsement will be added to your current CDL, expanding the types of vehicles you're authorized to drive.
Yes, to handle hazardous materials with a CDL Tank endorsement, you must also have a Hazardous Materials (Hazmat) endorsement. This requires passing an additional written test and a Transportation Security Administration background check. It ensures drivers understand safety protocols for handling hazardous materials, reducing the risk of incidents.
