FREE Air Brakes Endorsement Test Online | Minnesota 2024 Page 2 of 4
Train for FREE online with our Minnesota 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 MN 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.
7 . Where is the safety relief valve usually located?
An air brake system's safety relief valve is located in the tank that is first to receive air from the compressor.
8 . What can happen if a parking brake is used in very wet weather when temperatures are below freezing?
If you use the parking brakes when the weather is very wet and the temperature is below freezing, the brakes may become frozen, preventing the vehicle from moving.
9 . If the air pressure warning light comes on, you should:
If the low air pressure warning signals activate, it is essential that you bring the vehicle to a safe stop while you are still able to control the brakes.
10 . To find out if a vehicle that was built before 1998 has an Anti-Lock Braking System (ABS), you can:
If you are operating a vehicle built before 1998 and are unsure if the trailer has an Anti-Lock Braking System (ABS), you can check under the trailer for wheel speed sensors coming from the back of the brakes.
11 . If colors are being used to distinguish glad hands, which color is used for service lines?
When trailer air lines are color-coded, the service lines are generally blue and the emergency lines are generally red.
12 . The most common type of foundation brake used is the:
The most common type of foundation brake is an s-cam drum brake.
See the exact questions that will be on the 2024 Minnesota DMV exam.
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