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Oregon CDL DMV Knowledge Test Class A 1

Take 6 practice tests for CDL is the best way to prepare for your Oregon DMV exam is by taking our free practice tests. The following question are from real Oregon DMV practice test. More than 95% people pass a DMV exam when practice at DMV Practice Test.

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1. When checking your tires as part of the pre-trip inspection, you should look at the:
Tire pressure.
Tire color.
Tire manufacturer.

When checking your tires as part of a pre-trip inspection, it is important to verify that the tire pressure is neither too low nor too high.

2. When driving in the winter, which of the following should receive extra attention in a pre-trip inspection?
Coolant and antifreeze levels
The air conditioning unit
Oil levels
The air filter

When driving during the winter, it is especially important to make sure the coolant and antifreeze are at safe levels.

3. A broken exhaust system can:
Let poisonous fumes into the cab.
Improve fuel efficiency.
Make steering more difficult.

Defects in an exhaust system are very dangerous because they can cause poisonous fumes to enter the cab or sleeper berth.

4. To stay alert while driving, you should:
Eat a heavy meal before beginning your trip.
Keep the cab warm.
Ride with a second person who can share driving responsibilities.

Splitting driving responsibilities with a second driver lowers the chance that either of you will drive while fatigued. You can also reduce the risk of fatigue by avoiding heavy foods and keeping the interior of the cab cool.

5. When loading cargo, weight should be placed:
As high as possible.
As low as possible.
As far back as possible.

A vehicle is vulnerable to tipping over if its center of gravity is too high. To prevent this, you should distribute the weight of your cargo evenly and as low as possible.

6. Distracted driving:
Can only be caused by physical distractions.
Can only be caused by mental distractions.
Can be caused by physical and/or mental distractions.
Can only be caused by cell phone use.

Distractions while driving can be physical (such as reaching for an object), mental (such as making conversation with a passenger), or both (such as holding a phone to send texts).

7. What is often found in compressed air?
Brake fluid

Compressed air in an air brake system usually contains a certain amount of water and compressor oil. The water and oil can damage the brakes if left to accumulate in the system. Tanks must be drained regularly to remove this build-up.

8. When traveling on a downgrade, a vehicle will:
Slow down.
Travel at the same rate as on level roadway.
Speed up.
Likely swerve to the right.

On a downgrade, the force of gravity will cause a vehicle to speed up. Adjust your speed before approaching a hill to reduce overuse of your brakes.

9. The steering wheel should be:
Held with both hands.
Held with one hand to keep the other hand free.
Held with one hand at a time, alternating between hands.

A steering wheel should be held firmly with both hands, placed on opposite sides of the wheel.

10. To avoid a crash:
Braking is always the best option.
Swerving may be more effective than braking.
Drivers should leave 100 yards of distance between their vehicle and the next.

Stopping is not always the safest response to a hazard on the road. You can almost always turn to avoid an obstacle faster than you can stop.

11. The leakage rate for a single vehicle with air brakes should be no more than ____ in one minute during a static leakage test.
1 psi
2 psi
3 psi

When performing a static leakage test on a single vehicle with air brakes, the leakage rate should be no more than 2 psi in a minute. If the air leaks from the air brake system at a quicker rate, the vehicle should not be driven because something likely needs to be repaired.

12. A second conviction of operating a CMV with a minimum blood alcohol concentration (BAC) of 0.04 percent will result in:
The loss of your CDL for life.
The loss of your CDL for five years.
The loss of your CDL for one year.

It is illegal to operate a CMV if your blood alcohol concentration (BAC) is 0.04 percent or higher. A first offense will result in the loss of your CDL for one year. A second offense will result in the loss of your CDL for life.

13. After a trip:
A vehicle should be placed out-of-service.
A vehicle's oil should be changed.
A vehicle's after-trip inspection should be completed.
A vehicle's battery should be disconnected.

After a trip, you may be required to perform an inspection and file a report on each vehicle that you've driven.

14. If you’re driving and the ABS warning light comes on, it means:
The ABS is working properly.
The ABS has just been activated.
The ABS is not working properly.
The ABS needs to be activated.

Vehicles with Anti-Lock Braking Systems (ABS) have yellow malfunction lights to alert the driver if something is wrong with the braking system. If these lights activate, the driver may have lost ABS on one or more wheels.

15. Driving too fast:
Is a major cause of fatal crashes.
Can be a good way to get to your destination quickly.
Should only be done if the roadway is dry.
Is acceptable in light traffic.

Driving at excessive speeds is a major cause of fatal crashes. Never drive above the posted maximum speed limit and adjust your speed to fit conditions.

16. When parked on a flat surface, you should:
Use wheel chocks to prevent your vehicle from moving.
Not use wheel chocks.
Use wheel chocks, but only if you have applied the parking brake.

When parking on a level surface, you should use wheel chocks. If the vehicle is not equipped with spring brakes, this is essential to prevent the trailer from moving.

17. After starting a trip while transporting cargo:
You will not need to inspect the cargo.
The cargo should only be inspected if it is making noise.
The cargo should only be inspected if there is an obvious concern.
The cargo should be inspected after 50 miles on the road to ensure it is still properly secured.

The securement of cargo must be checked before beginning a trip, within the first 50 miles of a trip, and then again every three hours or 150 miles.

18. When driving on the expressway during the skills test, you should:
Switch lanes frequently.
Use your mirrors to check traffic as needed.
Drive on the left side of the lane.
Drive above the posted speed limit.

During the on-road driving skills test, you may be asked to drive on an expressway. Make sure you maintain proper lane positioning, vehicle spacing, and vehicle speed. Continue to thoroughly check traffic in all directions while on the expressway.

19. Which of the following is not a crime that would disqualify an applicant from a hazardous materials endorsement?

There are a number of crimes that will disqualify a person from receiving a hazardous materials endorsement for seven years. Among these offenses are arson, robbery, and crimes of dishonesty, fraud, or misrepresentation. More serious crimes, such as murder, result in a lifetime disqualification.

20. The suspension system:
Holds up the vehicle and its load.
Keeps the load the proper distance behind the driver’s compartment.
Maintains a safe distance between the vehicle and other vehicles.
Lightens the load for the tires.

The suspension system holds up the vehicle and its load while keeping the axles in place. Damage to a suspension system can be very dangerous.

21. A vehicle equipped with an Anti-Lock Braking System (ABS) uses a ____ light to warn that the system is not working properly.

Anti-Lock Braking System (ABS) malfunction lamps are usually yellow. Even if the ABS isn't working properly, a driver will still have access to the vehicle's usual braking functions.

22. To help your vehicle be seen by others:
Your headlights should be clean.
Your headlights should be turned off during the day.
Your headlights should be covered with grease.
Your headlights should be used, but only in the rain.

A vehicle's headlights should be clean during trips. This will ensure that the lights can provide as much light as possible, helping the vehicle to be seen.

23. You should not use your mirrors:
When changing lanes.
When making a turn.
To determine how fast you are traveling.

While regular mirror checks should be a part of your driving routine, it is particularly important to check your mirrors when changing lanes, turning, merging, and making tight maneuvers.

24. When changing lanes, you should:
Move quickly before other vehicles get into the lane you wish to occupy.
Move slowly, in case another vehicle is in the lane you wish to occupy.
Not use your turn signal.
Never use the right lane.

Always change lanes slowly and smoothly. If you did not see drivers who are already using the lane you wish to occupy, this will give them a chance to get out of your way or honk their horns to alert you. Always signal before changing lanes.

25. A cardboard box on the roadway:
Is not a cause for concern.
Is usually empty.
May contain a heavy object that could damage your vehicle.
Should be avoided by driving off the roadway.

Any foreign object on the road is potentially dangerous. For example, something seemingly harmless, such as a cardboard box or paper sack, could contain a hard or heavy object that could do serious damage to a vehicle.

26. According to a National Sleep Foundation poll, about ____ of people have driven while sleepy.
10 percent
20 percent
60 percent
100 percent

According to the National Sleep Foundation’s Sleep in America poll, 60 percent of Americans have driven while feeling sleepy, and 36 percent admit to having actually fallen asleep while driving.

27. When completing an offset back/right parking maneuver, you should:
Pull straight forward, then drive straight back.
Drive straight back, then pull forward to the left.
Pull straight forward, then back to the right.

If you are asked to complete an offset back/right parking maneuver, you should first pull straight forward, then back up to the right. Your vehicle must be parked completely within the boundaries of the parking space.

28. During a basic vehicle control skills test, you may be asked to:
Parallel park.
Inspect your tires.
Monitor your gauges.
Pull forward into a parking space.

Maneuvers that may be included in the basic vehicle control skills test include straight line backing, offset back/right parking, offset back/left parking, driver side parallel parking, conventional parallel parking, and alley docking.

29. Of the following, which is the most slippery surface?
Ice that is dry
Ice that is wet
Wet pavement

Ice becomes wet when the weather is just warm enough to melt the ice slightly. Wet ice is much more slippery than ice that is not wet.

30. Header boards:
Should never be used.
Protect the driver from being hit by cargo.
Protect the driver's head when entering the cab of a truck.

Front-end header boards, also known as "headache racks," protect the driver from cargo moving in the event of a crash or emergency stop.

31. When turning, you should:
Signal before the turn.
Turn off your turn signal just before starting the turn.
Signal only if vehicles are in front of you.

Be sure to activate the appropriate turn signal well in advance of a turn or lane change. Signal continuously throughout the turn and make sure to cancel the signal after the turn is completed, if your vehicle doesn't have self-canceling signals.

32. Which of the following is not a warning sign of fatigue?
Frequent blinking
Rubbing your eyes
Missing exits or traffic signs
Staying within your lane

Possible warning signs of fatigue include trouble focusing, frequent blinking, or eyelids that feel heavy; repeated yawning; rubbing your eyes; daydreaming, or having wandering or disconnected thoughts; trouble remembering the last few miles; missing exits or traffic signs; trouble keeping your head up; drifting from your lane, following too closely, or hitting a rumble strip; and feeling restless or irritable.

33. One way to avoid becoming an aggressive driver is to:
Talk on your cell phone while driving.
Question others' driving abilities.
Set realistic expectations regarding travel time.

To help avoid frustration, which can lead to aggressive driving behavior, you should begin a trip with realistic expectations about your travel time. Plan ahead to allow time for potential traffic delays. Other strategies to help prevent aggressive driving behavior include driving an appropriate speed and keeping a reasonable following distance; avoiding making gestures at other drivers; and keeping your hands on the steering wheel.

34. An example of mandatory emergency equipment is:
A supply of spare electrical fuses.
A loud horn.
A battery-operated flashlight.
A supply of fireworks.

Mandatory emergency equipment includes: at least one fire extinguisher; spare electrical fuses (unless the vehicle is equipped with circuit breakers); and warning devices for parked vehicles (such as reflective triangles).

35. If a vehicle is accompanied by a vehicle inspection report:
The driver should first inspect the vehicle, then compare their notes with the report.
The driver should first look at the report when completing an inspection.
The driver should not conduct a pre-trip inspection and should rely only on the report.

As the first step of a vehicle inspection, a driver should review any inspection report left by the previous driver.

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