The low air pressure warning signal must activate before the air supply pressure drops below 55 psi in the air tank. If the warning signal does not turn on when being tested during an inspection, the vehicle is not safe to drive.

The warning light should activate.

The vehicle will be unable to shift out of gear.

To counteract the force of gravity, you should always slow down and shift into a lower gear before starting down a hill.

Your vehicle's speed should be decreased.

Your vehicle's speed should be increased.

Your vehicle's speed should be decreased.

The emergency brake should be applied.

Before adding coolant to a system without a recovery or overflow tank, you must turn the engine off and wait until it cools. Use gloves or a thick cloth to protect your hands. To release the pressure seal, turn the radiator cap slowly to the first stop.

Wait for the engine to cool before adding coolant.

Keep the vehicle running while adding coolant.

Not use gloves to touch the radiator cap.

Wait for the engine to cool before adding coolant.

You should not rely solely upon the presence of warning signals, gates, or flaggers to alert you to the approach of a train. Be especially alert to approaching trains at crossings that are not controlled by gates or signals. At any railroad crossing, you should operate under the assumption that a train is coming.

Not rely solely on warning signals to indicate if a train is approaching.

Rely on warning signals to indicate if a train is approaching.

Rely on the actions of other motorists to indicate if a train is approaching.

Not rely solely on warning signals to indicate if a train is approaching.

Class A Driving Test | Minnesota 2025 #2 Page 7 of 7

Train for FREE online with our Minnesota class A license 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 CDL class A permit 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 CDL class A requirements may vary from state to state.

Number of Question 50

Passing Score 40

Number of Tests 20

Class A Driving Test | Minnesota 2025 #2 Page 7 of 7

43 . What should happen before the air pressure in an air brake system tank falls below 55 psi?

44 . When entering a curve, you should:

45 . Before starting down a hill:

46 . If coolant has to be added to a system without a recovery tank, you should:

47 . Header boards are used to protect the driver from cargo in the event of a crash.

48 . When approaching a railroad crossing, you should:

49 . Water should be added to the compressed air in an air brake system to improve the effectiveness of the system.

50 . At dawn or dusk, it is helpful to drive with your lights turned on.

See the exact questions that will be on the 2025 DMV exam.

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