Wisconsin Driver's Examination

Air Brakes #2

FREE Air Brakes Endorsement Test Online | Wisconsin 2024

Train for FREE online with our Wisconsin 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 WI Class A/Class B driver license in 2021, 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 . When you need to stop in an emergency, you should:

Lock the wheels and skid to a stop.

Stop in a way that keeps your vehicle in a straight line.

Stop in a way that turns your vehicle.

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.

2 . In a dual air brake system:

Air tanks are shared between both systems.

Each system has its own air tanks.

You must designate which system you are using.

There are two air brake systems in a dual air brake system. The systems share a set of brake controls, but each system has its own tanks, hoses, and lines.

3 . If the low pressure warning light comes on while you are driving:

Braking will only occur if there is enough air in the tanks.

You can brake 14 times before the air in the system runs out.

You should continue to drive normally and check the brake system when it is convenient.

You should continue driving, but turn the emergency flashers on to warn other motorists.

If the low air pressure warning light turns on, you should stop and safely park your vehicle as soon as possible. Controlled braking will be possible only as long as enough air remains in the tanks.

4 . If the spring brakes are on, you should:

Not use the brake pedal.

Press the accelerator.

Move the steering wheel.

Be especially careful because the brakes may fail.

You should not apply the brake pedal if the spring brakes are activated. The brakes could be damaged if they are subjected to the force of air pressure and the springs at the same time.

5 . To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:

Set the control to normal.

Set the control to the off position.

Set the control to the neutral position.

Some older vehicles have front brake limiting valves with "normal" and "slippery" settings. Setting a brake limiting valve to "slippery" reduces the vehicle's stopping power, so a driver should make sure the valve is in its "normal" position. Front wheel braking has proven to be effective in all driving conditions.

6 . If your tractor is equipped with ABS but your trailer is not, the ABS:

Will not be effective.

Will still improve your steering control.

Will make jackknifing easier.

Will allow others to see when you brake.

In a tractor-trailer combination, if the tractor is equipped with an Anti-Lock Braking System (ABS) but the trailer is not, the ABS will still improve the driver's steering control. The driver should keep an eye on the trailer and let up on the brakes if the trailer begins to swing out.

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2024 Wisconsin | Frequently Asked Questions

In Wisconsin, obtaining a CDL Tank Endorsement requires passing a written test. To prepare, study the Tank Vehicles section of the Wisconsin Commercial Driver's Manual. After studying, schedule a test at your local DMV. If you pass, you'll need to pay a fee to add the endorsement to your CDL. Remember, you must already have a valid CDL to qualify.

To obtain a CDL Tank license, you must first possess a valid Commercial Driver's License (CDL). Then, study the Tank Vehicles section of your state's Commercial Driver's Manual. You'll need to pass the written tank vehicle endorsement test at your local DMV. Lastly, pay the required fee to add the endorsement to your CDL.

While specific training or experience isn't legally required for a CDL Tank endorsement, it's highly recommended. Knowledge about handling tank vehicles, understanding the surge effect, and knowing safety procedures is crucial. Studying the Tank Vehicles section of the Commercial Driver's Manual thoroughly helps. However, practical experience or training can significantly improve your understanding and driving skills.

Yes, to obtain a CDL Tank endorsement, you need to pass an additional written test. This test covers specific knowledge related to the safe operation of commercial tank vehicles. It includes topics like vehicle inspection, driving techniques, and dealing with emergencies. The content for this test can be found in the Tank Vehicles section of the Commercial Driver's Manual.

The written test for the CDL Tank endorsement includes topics such as: the inspection and operation of tank vehicles, understanding the "baffled" and "unbaffled" tanks, managing the surge effect, handling high center of gravity, safe driving techniques, and responding to emergencies or hazardous conditions related to tank vehicles. The goal is to ensure safe and knowledgeable operation of tank vehicles.

The CDL Tank endorsement assessment primarily evaluates your knowledge rather than specific driving maneuvers. It focuses on understanding the unique handling of tank vehicles, managing surge, comprehending the differences between baffled and unbaffled tanks, and dealing with hazardous materials. Practical skills are usually assessed during the general CDL road test, not in the tank endorsement test.

Drivers with a CDL Tank endorsement must comply with federal and state regulations. They cannot drive tank vehicles without a valid CDL and the Tank endorsement. Additionally, if the tank vehicle is carrying hazardous materials, they must also have a Hazmat endorsement. Exceeding weight limits, failing to secure loads properly, or not following safety regulations can lead to penalties or loss of the endorsement.

No, you cannot transport liquid or gas materials in a tank vehicle without a valid Commercial Driver's License (CDL) with a Tank endorsement. This is a federal requirement and applies in all states, including Wisconsin. Violating this rule can lead to serious penalties, including fines and suspension of your CDL.

The CDL Tank endorsement can be added to your current commercial driver's license. You don't need a fresh application for a new license. However, you will need to pass a knowledge test specific to tank vehicles, and in some cases, a skills test may also be required. Once you pass, the Tank endorsement will be added to your existing CDL.

Yes, handling hazardous materials with a CDL Tank endorsement requires additional certifications. You must possess a Hazardous Materials (Hazmat) endorsement along with your CDL Tank endorsement. To get this, you'll need to pass a written test on federal and state regulations for transporting hazardous materials and undergo a federal background check.