Air Brakes #2
Air Brakes Endorsement Test | Michigan 2025 #2 Page 2 of 4
Train for FREE online with our Michigan 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 MI 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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7 . An application pressure gauge shows:
If a vehicle is equipped, an application pressure gauge shows how much air pressure is being applied to the brakes. This gauge can help a driver identify if their brakes are beginning to fade.
8 . ABS brakes:
The purpose of an Anti-Lock Braking System (ABS) is to prevent a vehicle's wheels from locking up when the driver brakes hard on a slippery surface.
9 . In a vehicle with dual air brakes, a leak in one system ____ the second system.
A dual air brake system is made up of two separate air brake systems. If there is an air leak in one system, it may not affect the other.
10 . If you are braking on dry pavement while traveling at 55 mph, how much distance will brake lag add to your overall stopping distance?
The total stopping distance for vehicles equipped with air brakes is made up of four factors: perception distance, reaction distance, brake lag distance, and braking distance. When braking at a speed of 55 mph while driving on dry pavement, the brake lag can add around 32 feet to the vehicle's total stopping distance.
11 . Friction in an S-cam brake is caused when the brake shoes and linings:
Friction inside a brake drum is caused when the brake shoes and linings push against the inside of the drum. The friction in the drums will slow and stop the vehicle.
12 . You should test the low pressure warning signal by:
It is essential that your low pressure warning light functions properly. After allowing the system to charge, you can test the warning signal by rapidly applying and releasing the brake pedal. This will release air from the braking system and the warning signal should come on when pressure drops to a dangerous level.
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2025 Michigan | Frequently Asked Questions
A CDL Class B license in Michigan allows drivers to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or a towed vehicle not exceeding 10,000 pounds. This typically includes buses, dump trucks, tow trucks, delivery trucks, and garbage trucks. It also permits the transportation of 16 or more passengers including the driver.
A Class B CDL license in Michigan allows the operation of single vehicles with a gross vehicle weight rating of 26,001 pounds or more, or a towed vehicle not exceeding 10,000 pounds. This typically includes large passenger buses, segmented buses, dump trucks, delivery trucks, garbage trucks, and straight trucks.
To acquire a Class B CDL license in Michigan, you must be at least 18 years old (21 for interstate driving), possess a valid Michigan driver's license, pass a vision test, and successfully complete a knowledge test. You must also pass a skills test, which includes a pre-trip vehicle inspection, basic controls test, and on-road driving examination.
In Michigan, you must be at least 18 years old to qualify for a Class B CDL license for intrastate driving (within Michigan only). However, if you intend to drive interstate (across state lines) or haul hazardous materials, you must be at least 21 years old.
Specific endorsements for a Class B CDL license in Michigan are not necessary, but they can expand the types of vehicles you are allowed to drive. For example, obtaining a Passenger or School Bus endorsement allows you to drive vehicles designed to carry 16 or more passengers, including the driver. Each endorsement requires passing additional tests.
The Class B CDL skills assessment in Michigan includes three components: a pre-trip vehicle inspection to ensure the vehicle is safe to drive, a basic controls test to verify your ability to control the vehicle, and an on-road driving test to evaluate your practical driving skills in various traffic situations and maneuvers.
Class B CDL license holders in Michigan are limited to operating single vehicles with a GVWR of 26,001 or more pounds, or any such vehicle towing a vehicle not in excess of 10,000 pounds GVWR. They can't operate Class A vehicles unless they get a Class A endorsement. Also, to transport passengers or hazardous materials, specific endorsements are required.
In Michigan, the written Class B CDL test is typically administered in English. However, for those who are not fluent in English, the state offers the test with audio assistance. It's crucial to contact your local Michigan Secretary of State office to inquire about available language accommodations for the written test.
Yes, Michigan provides reasonable test accommodations for individuals with disabilities taking the Class B CDL written exam. The accommodations can include extra time, breaks, or audio assistance. You need to request these accommodations in advance by contacting your local Michigan Secretary of State office and providing appropriate documentation of the disability.
If you don't pass the Class B CDL written test in Michigan, you can retake it. However, you must wait at least one day before attempting the test again. Keep in mind, if you fail the test three times, you'll have to start the application process over, including paying all applicable fees.
