Air Brakes #2
Air Brakes Endorsement Test | Montana 2025 #2 Page 4 of 4
Train for FREE online with our Montana 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 MT 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 . During a walk-around inspection, ensure there are no cracks on the brake drums that are more than ____ of the width of the friction area.
One tenth
Before beginning a trip, it is important to check the brake drums during your walk-around inspection. It is unsafe to drive if any brake drum has a crack more than one half of the width of the friction area.
20 . Front brake limiting valves were intended to:
Remove uncertainty when applying the brakes.
Some older vehicles with air brakes have front brake limiting valves. These valves were intended to reduce the risk of front wheels skidding. However, research has shown that such devices are unnecessary, so they should be left in the "normal" position.
21 . Failing to drain air tanks could result in:
In an air brake system, the air tanks must be periodically drained to remove accumulations of water and compressor oil. If water is not removed, it could freeze in cold weather and cause brake failure.
22 . What do anti-lock brakes do?
Prevent a vehicle from accelerating while traveling downhill
The function of an Anti-Lock Braking System (ABS) is to prevent the vehicle's wheels from locking up from hard brake application.
23 . Using the brakes creates heat. If too much heat is produced:
Brakes are designed to take a lot of heat, but drivers should not rely solely on the brakes to slow their vehicle. Brakes may fade and lose their ability to slow down the vehicle if they become too hot, so drivers should also rely on the engine braking effect.
24 . Why should you regularly drain the air tanks?
Compressed air usually contains a certain amount of moisture and compressor oil, which can build up in the air storage tanks and damage the brake system. The tanks should be drained to clean out these accumulations. On a tank with a manual drain valve, draining should be performed at the end of each day of driving.
25 . Once the air tanks are at an air pressure level of 125 psi, the air compressor governor will:
An air compressor governor will stop the compressor from pumping air once the air tanks are at an air pressure level around 125 psi. This air pressure level is referred to as the "cut-out" level.
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2025 Montana | Frequently Asked Questions
To acquire a CDL Hazmat endorsement in Montana, you first need to have a Montana CDL. Then, you must pass the Hazardous Materials Endorsement Knowledge Test. You'll also need to undergo a TSA background check. Once you've passed the tests and background check, you can apply for the endorsement through the Montana Department of Motor Vehicles.
Before obtaining a CDL Hazmat endorsement, you must hold a valid Commercial Driver's License (CDL). You need to be at least 21 years old, have U.S. citizenship or lawful permanent residency, and be able to read and speak English. Additionally, you must pass a Hazardous Materials Endorsement Knowledge Test and a TSA background check.
When applying for a CDL Hazmat endorsement, you'll need to provide your current CDL, proof of U.S. citizenship or lawful permanent residency (like a birth certificate or green card), and proof of identity. Additionally, you'll need to complete a Hazardous Materials Endorsement application and pass the TSA background check.
Yes, there is a dedicated written test for the CDL Hazmat endorsement. This test covers various topics related to hazardous materials, including recognition and identification, communication rules, emergency response, and more. You must pass this test to obtain your Hazmat endorsement in Montana.
The written test for the CDL Hazmat endorsement covers a range of topics related to hazardous materials. These include identification of hazardous materials, loading and unloading procedures, use of placards and labels, emergency response procedures, and regulations pertaining to transport. It also covers safety precautions and the handling of discharge system and leaks.
Yes, there are additional costs associated with obtaining a CDL Hazmat endorsement. These include fees for the written test, TSA background check, and fingerprinting. The total cost can vary, but you can expect to pay between $80-$120. It's recommended to check with the Montana Motor Vehicle Division for the most current fees.
Yes, a background check and security clearance are necessary for the CDL Hazmat endorsement. This process, known as the Threat Assessment Program, is managed by the Transportation Security Administration (TSA). It involves checking criminal history, immigration status, and mental health status to ensure that hazardous materials are transported safely.
Yes, specialized training is required for the CDL Hazmat endorsement. You must pass a written test about transporting hazardous materials. Additionally, you must undergo a TSA background check. The training and certification ensure you understand how to safely transport hazardous materials, are aware of the risks involved, and know how to respond in case of emergencies.
No, you cannot legally transport hazardous materials without a valid CDL Hazmat endorsement in Montana or anywhere in the U.S. This endorsement is required by federal law and ensures that drivers have the necessary skills and knowledge to safely handle and transport hazardous materials. Violating this law can result in severe penalties.
Yes, you can add the CDL Hazmat endorsement to your current CDL license. You do not need to apply for a new CDL. However, you must pass the Hazmat knowledge test, submit fingerprints, and undergo a TSA background check. Once these steps are completed and approved, the Hazmat endorsement will be added to your existing CDL.
