Air Brakes #1
Air Brakes Endorsement Test | Delaware 2025 #1
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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1 . During a static leakage test, what is the maximum leakage rate that is safe for a double combination vehicle?
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 the 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 . How many air storage tanks are used in an air brake system?
The number varies.
Air storage tanks are used to hold compressed air. The number and size of air tanks in an air brake system varies among vehicles.
3 . A modulating control valve can control the:
Anti-lock braking system (ABS).
A modulating control valve allows a driver to gradually apply spring brakes. In equipped vehicles, the valve is controlled by a lever located on the dashboard.
4 . Air tank drains:
Must remain open while driving.
In an air brake system, the air storage tanks are equipped with drains to allow water and compressor oil to be removed. The water and oil can damage the brakes if left to accumulate in the system.
5 . 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.
6 . Before a vehicle with dual air brakes is driven, pressure of at least ____ should be built up in both braking systems.
100 psi
Before driving a vehicle with a dual air brake system, allow time for the air compressor to build up pressure of at least 100 psi in both the primary and secondary systems.
See the exact questions that will be on the 2025 Delaware DMV exam.
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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.
