Air Brakes #2
Air Brakes Endorsement Test | Delaware 2026 #2 Page 3 of 4
Train for FREE online with our Delaware 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 DE 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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13 . 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.
14 . When the brake pedal is pushed down, air brakes work:
Only if it is warm outside.
Because air takes time to flow through the air lines to the brakes, air brakes cannot begin working instantly. There is often a brake lag of at least one-half of a second between the moment the brake pedal is pressed and the moment the brakes begin to work.
15 . The service brake system:
Applies and releases the axle brake.
Air brakes consists of three separate braking systems: the service brake system, the parking brake system, and the emergency brake system. The service brake system applies and releases the brakes when you use the brake pedal while driving normally.
16 . Most heavy-duty vehicles use:
Quadruple air brake systems.
Most heavy-duty vehicles use dual air brake systems, in which there are two separate braking systems operated by a single set of controls. Each system operates the brakes on different axles.
17 . When you need to stop in an emergency, you should:
Expect your vehicle to slow down more quickly than usual.
If you need to make an emergency stop, you can use either the controlled braking method or the stab braking method. It's important to brake in a way that keeps your vehicle traveling in a straight line while still allowing you to turn, if necessary.
18 . The brake pedal is part of which braking system?
The auxiliary brake system
The service brake system applies and releases the brakes when a driver presses the brake pedal while driving normally.
See the exact questions that will be on the 2026 Delaware DMV exam.
99.2% of people who use the cheat sheet pass the FIRST TIME
Lillian MCcranie explains how our CDL study guide was helpful in passing the exam and recommends it to everyone.
Cameron tells us how he purchased the CDL exam, and found it to be a useful tool which helped him pass the exam and find a job.
2026 Delaware | Frequently Asked Questions
To acquire a CDL Tank endorsement in Delaware, you must first have a Commercial Driver's License (CDL). Next, you'll need to pass a written knowledge test specific to tank vehicles. The test covers topics like inspecting tank vehicles, driving tank vehicles, and safe driving rules. The Delaware DMV offers study materials to help you prepare for the test.
To obtain a CDL Tank license, it's essential to already have a Commercial Driver's License (CDL). Then, you must pass a written knowledge test specific to tank vehicles. The test covers areas such as inspecting tank vehicles, driving them, and understanding safe driving rules. Preparation materials are available through the Delaware DMV to aid in your study for the test.
While specific training or experience is not mandatory for a CDL Tank endorsement in Delaware, it's highly recommended. Having practical experience or training can help you pass the specific written knowledge test, which covers areas such as inspecting and driving tank vehicles, and understanding safe driving rules. However, the requirement is passing the test, not prior training or experience.
Yes, an additional written knowledge test is required to obtain a CDL Tank endorsement in Delaware. This test focuses on specific areas related to tank vehicles, including inspection, driving, and safe driving rules. It's recommended to study the provided materials and guides from the Delaware DMV to prepare for this test.
The written test for the CDL Tank endorsement in Delaware covers subjects such as tanker truck inspection, proper loading and unloading procedures, safe driving techniques for transporting liquids or gases, and emergency response protocols. It also includes questions on understanding placards and hazardous materials regulations.
The CDL Tank endorsement assessment doesn't include a skills or maneuvers test. It only requires a written knowledge test. The test covers subjects like inspecting tank vehicles, safe driving rules, and driving tank vehicles. It's crucial to understand the high center of gravity in tank vehicles and how to handle surge, among other things.
Yes, there are some limitations. Drivers with a CDL Tank endorsement are only allowed to operate commercial motor vehicles designed to transport any liquid or gaseous materials within a tank. Additionally, the tank must have a rated capacity of 1,000 gallons or more. Also, certain hazardous materials may require additional endorsements.
No, transporting liquid or gas materials without a valid CDL Tank endorsement is illegal in Delaware. This endorsement is required to ensure that drivers have the necessary skills and knowledge to handle such materials safely. Violating this rule could result in serious penalties, including fines and suspension of the driver's commercial driving license.
Yes, a 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 endorsement written test. Upon passing, the Tank endorsement will be added to your current CDL, and you can then legally operate tank vehicles.
Yes, handling hazardous materials requires a separate Hazardous Materials (HazMat) endorsement in addition to the CDL Tank endorsement. Applicants must pass a written test, undergo a TSA background check, and be fingerprinted. Furthermore, carriers must follow specific federal and state regulations for packaging, labeling, and transporting hazardous materials.
