Air Brakes #1
Air Brakes Endorsement Test | Delaware 2025 #1 Page 4 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 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 the requirements for CDL may vary from state to state.
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19 . Failing to drain the tanks in an air brake system can result in:
Too much fuel being carried.
In an air brake system, the air storage tanks must be drained to remove accumulated water and compressor oil. Failing to do this can cause damage. For example, water that has built up in the system could freeze in cold weather and cause brake failure.
20 . If the air pressure warning light comes on, you should:
Safely exit the roadway and stop.
If the air pressure warning light or buzzer comes on while you are driving, you should immediately stop and safely park the vehicle. This warning signal indicates that there is a problem in the air brake system that needs to be fixed.
21 . Brake fading is caused when:
Brakes are wet.
Using the brakes excessively will cause them to overheat, making them less effective. This is referred to as "fading."
22 . 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.
23 . Truck tractors with air brakes built on or after March 1, 1997 must have:
A rear back-up camera.
Truck tractors with air brakes built on or after March 1, 1997 must be equipped with Anti-Lock Braking Systems (ABS).
24 . 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.
25 . If the safety relief valve in the air brake system releases air:
An air brake system has a safety relief valve, which releases air from the tanks if the pressure gets too high. If the valve must operate, something in the system is wrong and should be addressed by a mechanic.
2025 Delaware | Frequently Asked Questions
A CDL Class A license in Delaware allows holders to operate any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more, provided the towed vehicle(s) weigh over 10,000 pounds. This includes vehicles like tractor-trailers, truck and trailer combinations, tank vehicles, and livestock carriers.
A Class A CDL license in Delaware allows a driver to operate vehicles such as tractor-trailers, truck and trailer combinations, flatbeds, and tank vehicles. It's also suitable for operating any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more, where the towed vehicle(s) exceed 10,000 pounds.
To obtain a Class A CDL license in Delaware, you must be at least 18 years old (21 for interstate driving), possess a valid Delaware driver's license, pass a vision exam, and successfully complete a general knowledge test. Additionally, you must pass a skills test which includes a pre-trip vehicle inspection, basic controls test, and on-road driving examination.
In Delaware, to qualify for a Class A CDL (Commercial Driver's License), you must be at least 18 years old for intrastate driving (within Delaware only) and 21 years old for interstate driving (across state lines). You also need a valid driver's license and must pass the required Department of Transportation medical examination.
Endorsements are not required for a Class A CDL license in Delaware, but they can expand your job opportunities. They allow you to operate specific types of vehicles, such as tank vehicles, passenger vehicles, or school buses. To obtain an endorsement, you must pass additional written and skills tests related to the specific vehicle type.
The Class A CDL skills test in Delaware encompasses three main areas. First, a pre-trip vehicle inspection to assess your ability to evaluate whether your vehicle is safe to drive. Second, a basic controls test where you demonstrate basic vehicle operations. Lastly, an on-road driving examination where you show your ability to safely drive the vehicle in various road and traffic conditions.
Yes, there are limitations imposed on Class A CDL license holders in Delaware. For instance, if you have a restriction code on your CDL, it may limit the type of vehicle you can drive or require you to use certain equipment. Additionally, drivers under 21 can only operate commercial vehicles within Delaware (intrastate) and not across state lines (interstate).
In Delaware, the written Class A CDL test is primarily administered in English. However, in some cases, it may be available in Spanish. It's important to note that all CDL holders must have a basic understanding of English to converse with the public, understand traffic signs and signals, respond to official inquiries, and make entries on reports and records.
Yes, you can request accommodations for the Class A CDL written test if you have a disability. The Delaware DMV provides reasonable testing accommodations in compliance with the Americans with Disabilities Act. You must provide documentation of your disability and specify the type of accommodation you need when you schedule your test.
Yes, you can retake the Class A CDL written test in Delaware if you do not pass on your first attempt. However, you must wait at least 2 days before retaking the test. Keep in mind that each retest requires a new application and payment of the testing fee. It's recommended to study thoroughly before attempting the test again.