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.

It is critical that an engine have sufficient oil pressure. The engine can be destroyed rapidly if run without oil.

An engine can be destroyed quickly.

A vehicle will get better gas mileage.

An engine can be destroyed quickly.

An Anti-Lock Braking System (ABS) won’t work properly.

Missing clamps, spacers, studs, or lugs are dangerous, as are mismatched, bent, or cracked lock rings. Be sure your tires and rims are in good condition before operating your commercial motor vehicle.

A missing clamp on a rim is dangerous and should be corrected.

It is safe to drive on a tire that is missing one or two lug nuts.

A cracked lock ring on a rim is safe if you are not driving faster than 55 mph.

A missing clamp on a rim is dangerous and should be corrected.

Texting while driving a CMV is prohibited. "Texting" is defined as manually entering text into, or reading text from, an electronic device.

Neither creating nor reading a text is permitted.

Creating a text is not permitted, but reading a text is.

Creating a text is permitted, but reading a text is not.

Neither creating nor reading a text is permitted.

Class A Driving Test | Oregon 2025 #2 Page 3 of 7

Train for FREE online with our Oregon 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 OR 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 | Oregon 2025 #2 Page 3 of 7

15 . How many daily hours of sleep does an adult need to maintain alertness?

16 . Steering wheel play of more than ____ can make steering difficult.

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

18 . Without engine oil:

19 . Which of the following is true?

20 . While driving:

21 . When it is difficult to see other vehicles, such as at dawn or dusk, you should:

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

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