Air Brakes #2
Air Brakes Endorsement Test | Ohio 2026 #2 Page 4 of 4
Train for FREE online with our Ohio 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 OH 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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19 . What helps prevent wheel lockup when braking?
The purpose of an Anti-Lock Braking System (ABS) is to prevent wheel lockup while brakes are being applied.
20 . What should happen before the air pressure in an air brake system tank falls below 55 psi?
The low air pressure warning signal must activate before the air supply pressure drops below 55 psi in the air tank. If the warning signal does not turn on when being tested during an inspection, the vehicle is not safe to drive.
21 . Brakes can get out of adjustment quickly, especially:
Brakes are particularly prone to getting out of adjustment if they are hot. Be sure to routinely check the adjustment of your brakes. For a vehicle to be safely controlled, all brakes must be properly functioning and adjusted.
22 . 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.
23 . What do air brakes use to make the brakes work?
Many large CMVs are equipped with air brakes. An air braking system uses compressed air to operate.
24 . During an applied leakage test, the maximum leakage rate for a double combination vehicle is ____ in a minute.
It is important to know the maximum air loss rate that is safe for your specific vehicle. A double combination vehicle should have a leakage rate no higher than 4 psi in a minute during an applied leakage test.
25 . The rods in S-cam brakes move the slack adjusters when air pressure is added to the brake chambers. This air pressure is added to the chambers when the driver:
When pressing the brake pedal in a vehicle with S-cam brakes, air will enter the brake chambers. The added air pressure will push out the rods and move slack adjusters, twisting the brake camshafts.
See the exact questions that will be on the 2026 Ohio DMV exam.
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Lillian MCcranie explains how our CDL study guide was helpful in passing the exam and recommends it to everyone.
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2026 Ohio | Frequently Asked Questions
To acquire a CDL Tank endorsement in Ohio, you need to have a valid Ohio CDL. You must pass the Tank Vehicle section of the Ohio CDL permit test. The test covers knowledge on inspecting tank vehicles, driving tank vehicles, and safe driving rules. Study materials can be found in the Ohio CDL Handbook.
To obtain a CDL Tank license in Ohio, you must already possess a valid Commercial Driver's License (CDL). Then you'll need to pass the Tank Vehicle endorsement test, which covers the special driving procedures and precautions related to operating a tank vehicle. Finally, you may also need to pass a skills test in a tank vehicle, depending on your state's requirements.
While Ohio does not mandate specific training or experience to obtain a CDL Tank endorsement, it's highly recommended. You must pass the Tank Vehicle endorsement test, which requires understanding the unique operations of tank vehicles. Many applicants find training courses or experience driving these vehicles beneficial in successfully passing the test.
Yes, in Ohio, to obtain a CDL Tank endorsement, you must pass the Tank Vehicle endorsement test. This written test focuses on the operation and safety considerations specific to tank vehicles. The topics include inspecting tank vehicles, driving tank vehicles, and safe driving rules related to these types of vehicles.
The written test for the CDL Tank endorsement in Ohio covers topics such as inspecting tank vehicles, driving tank vehicles, safe driving rules, handling emergencies, and understanding the different types of tanks. It also includes questions about the special requirements for loading and unloading tank vehicles.
The CDL Tank endorsement assessment doesn't involve practical driving skills or maneuvers. Instead, it's a written test focusing on theoretical knowledge. Subjects include understanding high center of gravity, surge, inspecting tank vehicles, special driving rules and procedures, and handling emergencies specific to tank vehicles.
Drivers with a CDL Tank endorsement must adhere to all federal and state regulations for commercial drivers, including hours of service limitations. They must also follow specific rules for transporting liquids, such as weight restrictions and handling procedures. Additionally, if a driver's tank vehicle carries hazardous materials, they need a HazMat endorsement in addition to the Tank endorsement.
No, it's illegal to transport liquid or gaseous materials in a tank vehicle without a valid CDL Tank endorsement. This rule applies to commercial vehicles that have a tank with a capacity of 1,000 gallons or more. Violating this rule can result in fines, CDL disqualification, or even criminal charges depending on the severity of the violation.
The CDL Tank endorsement can be added to your existing CDL. You don't need to apply for a new license. However, you'll need to pass the Tank Vehicle written test. Once you pass, the endorsement will be added to your CDL, and you can legally operate tank vehicles. Please check with your local DMV for specific procedures and fees.
Yes, handling hazardous materials requires not only a CDL Tank endorsement but also a HazMat endorsement. This entails passing a written test and a federal background check. It's essential to understand specific regulations for transporting hazardous materials including proper loading, unloading, and emergency handling procedures to ensure safety on the road.
