Air Brakes Endorsement Test | Connecticut 2025 #1

Train for FREE online with our Connecticut 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 CT 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.

Number of Question 25

Passing Score 20

Number of Tests 20

1 . The most common type of foundation brake used is the:

S-cam drum brake.

C-cam drum brake.

G-cam disc brake.

P-cam disc brake.

The most common type of foundation brake is an s-cam drum brake.

2 . If the low pressure warning signal activates while you are driving, you should:

Continue driving normally.

Exit the road and park as soon as safely possible.

Stop where you are and park.

Put on your hazard lights and continue driving.

If the low pressure warning signal activates while you are driving, it is important that you safely exit the roadway as soon as possible and park your vehicle. If the air pressure gets too low, the brakes will no longer work well enough for you to stop safely.

3 . A wig wag is:

A low pressure warning device.

A tube that carries air to the brakes.

A type of air brake system.

Vehicles with air brakes are required to be equipped with a low pressure warning device. A wig wag is a type of low air pressure warning device. This device drops a mechanical arm into the driver's view if the pressure in the tanks drops to a level between 55 and 75 psi.

4 . An air compressor governor controls:

When the air compressor pumps air into the air storage tanks.

How fast air is pumped into the air storage tanks.

The temperature of the air pumped into the air storage tanks.

In an air brake system, the air compressor governor controls when the air compressor pumps air into the air storage tanks.

5 . When operating a vehicle with a dual air brake system, the driver should:

Let the vehicle warm up before driving to ensure that the fuel reaches the engine.

Let the air compressor build up a minimum of 100 psi pressure in the primary and secondary systems before driving.

Begin driving just after the vehicle starts.

Before driving a vehicle with a dual air brake system, allow time for the air compressor to build up a minimum of 100 psi pressure in both the primary and secondary systems. Watch the air pressure gauges to monitor the pressure levels.

6 . The air entering air storage tanks may contain:

Water and compressor oil.

Frost.

Gravel.

Antifreeze.

The air that enters air storage tanks in an air brake system usually contains a certain amount of water and compressor oil. Because accumulations of these materials can damage the braking system, tanks are equipped with drains to allow their removal.

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2025 Connecticut | Frequently Asked Questions

A CDL Class A license in Connecticut allows the holder to operate any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more, provided the Gross Vehicle Weight Rating (GVWR) of the vehicle being towed is over 10,000 pounds. This typically includes tractor-trailers and truck and trailer combinations.

A Class A CDL license in Connecticut allows the holder to operate vehicles such as tractor-trailers, truck and trailer combinations, tank vehicles, livestock carriers, and flatbeds. The license is for any combination of vehicles with a Gross Combination Weight Rating (GCWR) over 26,001 pounds, if the towed vehicle exceeds 10,000 pounds GVWR.

To obtain a Class A CDL license in Connecticut, you must be at least 21 years old, possess a valid Connecticut driver's license, pass a vision test, and complete a commercial driver's license knowledge test. You must also pass a pre-trip vehicle inspection test and a skills test, which includes off-road maneuvers and on-road driving. Additionally, you must provide a medical examiner's certificate.

In Connecticut, you must be at least 21 years old to qualify for a Class A CDL license if you intend to drive across state lines (interstate). However, if you plan to drive only within Connecticut (intrastate), you can obtain a Class A CDL license at the age of 18.

Specific endorsements are not required for a Class A CDL license, but they can grant additional privileges. Endorsements include T for Double/Triple Trailers, P for Passenger Vehicles, N for Tank Vehicles, H for Hazardous Materials, and S for School Buses. Each endorsement requires passing a separate knowledge test and sometimes a skills test.

The Class A CDL skills test in Connecticut encompasses three main sections: a pre-trip vehicle inspection, a basic vehicle control test, and an on-road driving test. This assessment is designed to evaluate your ability to safely operate a Class A commercial vehicle, including checking for safety defects, maneuvering the vehicle in various situations, and driving in normal traffic conditions.

Yes, Class A CDL license holders may face limitations based on factors like the driver's medical condition, the type of vehicle driven, and the presence of certain endorsements. For example, drivers might be restricted to operating automatic transmission vehicles, or prohibited from driving tank or passenger vehicles without the appropriate endorsements. Also, all CDL holders must abide by federal hours-of-service regulations.

Yes, in Connecticut, the written Class A CDL test is available in multiple languages besides English. However, federal regulations require that all CDL holders understand English sufficiently to converse with the general public, understand highway traffic signs and signals, and respond to official inquiries and instructions.

Yes, you can request accommodations for the Class A CDL written test if you have a disability. The Connecticut DMV complies with the Americans with Disabilities Act (ADA) and provides reasonable accommodations like sign language interpreters, extra time, or tests in alternative formats. You should contact the DMV directly to arrange these accommodations prior to your test date.

If you fail the Class A CDL written test in Connecticut, you are allowed to retake it. However, you must wait a minimum of seven days before your next attempt. There is also a retest fee that applies each time you retake the test. It's recommended to study the CDL manual thoroughly before your next attempt.