Air Brakes #1
Air Brakes Endorsement Test | California 2026 #1
Train for FREE online with our California CDL air brake 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 Class A/Class B driver license 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 the requirements for CDL may vary from state to state.
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1 . During a static leakage test, the maximum leakage rate for a double combination vehicle is:
When performing a static leakage test on a double combination vehicle with air brakes, the leakage rate should be no more than 3 psi in one minute. If air leaks from the air brake system at a quicker rate, the vehicle should not be driven because something likely needs to be repaired.
2 . If the spring brakes are on, you should:
Do not use the brake pedal when the spring brakes are on. This could damage the brakes by subjecting them to the combined forces of springs and air pressure.
3 . When a brake pedal is pressed and the S-cam is turned, the S-cam:
When a brake pedal is pressed and the S-cam is turned, the S-cam presses the brake shoes against the inside of the brake drum. This causes friction and will cause the vehicle to slow.
4 . A dual air brake system:
A dual air brake system is made up of two separate air brake systems. The systems share a single set of brake controls, but each has its own air tanks, hoses, and lines. One system typically operates the regular brakes on the rear axle or axles while the other system operates the regular brakes on the front axle.
5 . During an inspection, slack adjusters on S-cam brakes should not move more than:
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.
6 . During a static leakage test, the maximum leakage rate for a triple combination vehicle with air brakes is ____ in a minute.
When performing a static leakage test on a triple combination vehicle with air brakes, the leakage rate should be no more than 5 psi in one minute. If air leaks from the air brake system at a quicker rate, the vehicle should not be driven because something likely needs to be repaired.
2026 California | Frequently Asked Questions
To acquire a CDL Passenger endorsement in California, you must first have a commercial driver's license (CDL). Then, you need to pass a written passenger transport test and a skills test in the type of vehicle you'll be driving. You must also complete a medical examination and submit the Medical Examination Report form to the DMV.
To obtain a CDL Passenger license in California, you must hold a valid commercial driving license (CDL). You must then pass a written passenger transport test and a skills test in the type of vehicle you'll be driving. Additionally, you need to undergo a medical examination and submit the Medical Examination Report form to the DMV.
Yes, to secure a CDL Passenger endorsement in California, you need specific training to pass the written and skills tests required by the DMV. While not mandatory, professional training programs help you gain practical experience. These programs cover topics like vehicle inspection, on-road driving, and passenger safety, which are critical for the endorsement.
Yes, for a CDL Passenger endorsement in California, you are required to pass a written passenger transport test. This test focuses on specific knowledge related to carrying passengers, such as bus safety rules and procedures. This is in addition to the general knowledge test that is required for the base CDL.
During the CDL Passenger endorsement assessment, you will be expected to demonstrate your ability to safely load and unload passengers, respond to emergency situations, operate a vehicle of the same class as the one you plan to drive, and conduct vehicle inspections. Additionally, you'll need to show your ability to manage distractions and maintain a safe environment for passengers.
No, it is illegal to transport passengers in California without a valid CDL Passenger endorsement. This endorsement is required for drivers operating vehicles designed to carry 16 or more passengers, including the driver. Violating this law can lead to serious consequences, including fines, disqualification or suspension of your CDL, and even jail time in severe cases.
Yes, you can add the CDL Passenger endorsement to your existing Commercial Driver's License (CDL). You don't need a new application for your license, but you will need to pass the Passenger Vehicle written test and a skills test in a passenger vehicle. Ensure you have the correct class of CDL for the vehicle you plan to drive.
Yes, there are specific limitations for drivers with a CDL Passenger endorsement in California. For instance, you must not have more than two moving violations or at-fault accidents in the past two years. You also cannot have a DUI conviction within the past ten years. Furthermore, you must pass a physical examination every two years to ensure you're fit to drive.
Yes, in California, to acquire a CDL Passenger endorsement, you must be at least 21 years old. This is due to the fact that interstate driving or transporting hazardous materials is involved. However, at 18 years old, you can apply for a CDL for intrastate driving (within California only), but it won't include passenger endorsement.
With a CDL Passenger endorsement, you are eligible to operate vehicles such as buses, shuttles, and vans that are designed to carry 16 or more passengers, including the driver. This endorsement is particularly useful for those seeking employment as a bus driver in schools, public transit, and private charter companies.