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Wisconsin CDL DMV Knowledge Test Class A 2

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

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1. When backing, a helper:
Should be used whenever possible.
Often adds to the confusion of backing.
Should only be used if the driver is not feeling confident.
Would likely get in the way.

Backing up is always dangerous because you cannot see everything behind your vehicle. Whenever possible, use a helper who can monitor your blind spots.

2. Which of the following is acceptable if found during a pre-trip inspection?
Tires in mismatched sizes
Tread depth of 2/32 of an inch in the grooves of the front tires
Tires manufactured by different makers
Cracks in the tires

When inspecting your tires, verify that there is tread depth of at least 4/32 of an inch in every major groove on the front tires and tread depth of at least 2/32 of an inch in grooves on the other tires. Be sure that your tires are not too worn, are not cracked, have proper air pressure, and are all equally sized.

3. The steering wheel should be:
Held with both hands.
Held by one hand to allow for other tasks, such as eating and drinking.
Held by one hand at a time, alternating between hands.
Cracked to allow for an improved grip.

To maintain proper control of your vehicle, the steering wheel should be held firmly with both hands. Your hands should be positioned on opposite sides of the wheel.

4. If you are being tailgated, you should:
Drive on the shoulder.
Pull off the roadway.
Drive faster.
Allow the vehicle to pass.

If you are being tailgated, it is best to allow more room to open up in front of your vehicle. This will help you avoid the need for sudden stops, which could result in the tailgater rear-ending you, and will make it easier for the tailgater to pass. Speeding up may only make things more dangerous by prompting the other driver to continue tailgating you at a higher speed.

5. If a tire fails, the driver should:
Keep one hand on the steering wheel and use their other hand to wave to other drivers.
Stomp on the brakes.
Not use the brakes.

If a tire fails, braking could cause a loss of control. Unless braking is necessary to avoid a hazard, you should stay off the brakes until your vehicle has slowed considerably. Only then should you brake very gently, pull off the road, and stop.

6. For a hazardous materials endorsement, an applicant will be required to:
Provide their fingerprints and undergo a background check.
Provide employment history from the last five years.
Provide a list of countries visited within the last 10 years.

To obtain a hazardous materials endorsement, you must submit your fingerprints and pass a background check.

7. As part of a pre-trip inspection, you should look for all of the following, except:
Tires with too much air pressure.
Tires with too much wear.
Tires made by different manufacturers.

When inspecting your tires, verify that there is tread depth of at least 4/32 of an inch in every major groove on the front tires and tread depth of at least 2/32 of an inch in grooves on the other tires. Be sure that your tires are not too worn, are not cracked, have proper air pressure, and are all equally sized.

8. Drivers trapped behind a slow-moving vehicle often:
Follow the vehicle too closely.
Allow the vehicle plenty of space.
Are happy with the speed of travel.

It is common for drivers to tailgate slow-moving vehicles that cannot keep up with the speed of surrounding traffic. If you are being tailgated, allow the other driver to pass your vehicle.

9. While driving, if you notice anything affecting safety or mechanics, you should:
Stay quiet and see if the problem goes away.
Make a written report that includes your concerns.
Try to fix the issue yourself.
Not use that part of the vehicle and hope others don't notice the problem.

At the end of each day of driving, you may be required to make a written report on the vehicle or vehicles driven. Be sure to make note of any issues that could affect the safety of the vehicle or that could lead to a mechanical breakdown.

10. What do air brakes use to make the brakes work?
Compressed air
Outside air
Non-compressed air

Many large CMVs are equipped with air brakes. An air braking system uses compressed air to operate.

11. Dry bulk tanks require special care because:
They have low centers of gravity.
They have high centers of gravity.
Loads are usually stable.
They are usually overloaded.

Driving with a dry bulk tank requires special care, both because dry bulk tanks have high centers of gravity and because their loads often shift in transit. Be especially careful when taking turns and curves while operating such a vehicle.

12. When taking the on-road driving skills test, you will be evaluated on your gear usage. You should not:
Avoid grinding or clashing gears.
Select a gear that does not rev the engine.
Forget to shift through an intersection.
Shift while taking a turn.

During the on-road driving skills test, you will be evaluated on your gear usage. Select a gear that does not rev or lug the engine; avoid grinding and clashing gears; and avoid shifting through turns or intersections.

13. How does doubling your speed from 20 mph to 40 mph affect your vehicle's braking distance?
It stays about the same.
It increases slightly.
It doubles.
It quadruples.

Increasing your vehicle's speed will increase your vehicle's striking power and braking distance. Doubling your vehicle's speed from 20 to 40 mph will multiply its braking distance by four.

14. To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:
Set the control to normal.
Set the control to the off position.
Set the control to the neutral position.

Some older vehicles have front brake limiting valves with "normal" and "slippery" settings. Setting a brake limiting valve to "slippery" reduces the vehicle's stopping power, so a driver should make sure the valve is in its "normal" position. Front wheel braking has proven to be effective in all driving conditions.

15. In general, the length limit for a combination of 2 vehicles and load is:
10 feet
30 feet
65 feet
100 feet

Under Wisconsin law, the length of a 2 vehicle combination, including the load, is generally limited to 65 feet.

16. Steering that feels heavy is often a sign of:
Rear tire failure.
Front tire failure.
A shifting load.
The coolant overheating.

If steering begins to feel heavy, it is likely that one of your front tires has failed. If you feel a change to your steering, you should exit the road as quickly as is safely possible and check your tires.

17. What do headers do?
Protect the driver during a crash
Provide a place for storage
Ensure that controls are accessible
Act as wind guards

Front-end header boards protect the driver from the forward motion of their cargo in the event of a crash or emergency stop.

18. If mirrors are dirty before starting a trip:
They will likely become clean after driving a short distance.
It should not be a concern.
They should be cleaned before the vehicle is driven.

During a pre-trip inspection, be sure to check the mirrors and windshield for dirt and anything else that could interfere with your ability to see. Clean them as necessary.

19. A Class 1 hazardous material is:
An explosive.

The first hazardous materials class includes explosives such as ammunition, dynamite, and fireworks.

20. To inspect slack adjusters on S-cam brakes, you need to:
Park on a hill and test the brakes.
Put on gloves and push in the slack adjusters.
Remove the drum and look inside.
Chock the wheels and disengage the parking brake.

Check each slack adjuster after parking on level ground, setting wheel chocks, and disengaging the parking brake. Pull the slack adjusters to make sure they do not move more than about one inch from where the push rod is attached. If they move more than one inch, they may be out of adjustment and will need to be fixed.

21. When the brake pedal is pushed down, air brakes work:
After a short delay.
After about a minute.
Only if it is warm outside.

Because air takes time to flow through the air lines to the brakes, air brakes cannot begin working instantly. There is often a brake lag of at least one-half of a second between the moment the brake pedal is pressed and the moment the brakes begin to work.

22. If another driver is tailgating you, you should:
Move into the left lane.
Speed up.
Increase the space in front of your vehicle.
Flash your lights.

If you are being tailgated, it is advisable to open up the space in front of your vehicle, making it easier for the tailgater to get around you. Speeding up may be counterproductive because the driver may continue to tailgate you at the higher speed, only increasing the danger.

23. While driving, if you notice anything that affects safety or could lead to mechanical problems, you should:
Wait to see if the problem goes away.
Include the concerns in your written report.
Try to fix the issue yourself.

After finishing a day of driving, you may have to complete a written report on the condition of your vehicle. Be sure to mention anything that could affect safety or lead to mechanical breakdown.

24. During the driving test, when asked to make a lane change:
You should not be concerned with other motorists.
You should use your turn signal and change lanes when safe.
You should make the lane change as quickly as possible, even if that means cutting off another driver.

When asked to make a lane change during the on-road driving test, you should make the proper traffic checks, use your turn signal, and smoothly change lanes when it is safe to do so.

25. A one-way check valve:
Drains the water and compressor oil from the air tanks.
Prevents air from escaping if the air compressor has a leak.
Activates the emergency brakes when there is a leak.
Holds the spring brakes in position until they are used.

A one-way check valve is required to be between an air compressor and the first main reservoir. This valve prevents air from escaping the system if the air compressor develops a leak.

26. Which of the following is not a sign of tire failure?
A loud sound
Smoother steering

If you experience tire failure, you may hear the loud "bang" sound of a blowout or feel a heavy thumping or vibration in your vehicle. If steering begins to feel heavy, or if the rear of your vehicle begins to fishtail, you should stop to check your tires.

27. Overloading a vehicle with cargo:
Usually has no effect on the vehicle.
Can impact the vehicle's steering and brake control.
Can impact the vehicle's electrical system.

Overloading a vehicle can have negative effects on steering, braking, and speed control. Learn to recognize when cargo is overloaded or poorly balanced.

28. Which of the following is not a type of distraction?

Distractions that can affect safe driving can be classified as physical (such as reaching for an object), mental (such as talking with passenger), or both (such as talking on a hand-held phone).

29. Which of the following is not a warning sign of fatigue?
Difficulty focusing
Staying within your lane
Rubbing your eyes

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

30. When traveling down a steep grade, you switch into a lower gear:
Before beginning the grade.
When you have already started the grade.
As far down the grade as possible.

You should shift your vehicle's transmission into a low gear before staring a downhill grade. Be prepared for gravity to increase your vehicle's speed when traveling downhill.

31. If a traffic light has been green for a long time:
It will probably stay green as you approach.
It is likely broken.
It is likely that the light will soon change to yellow.
It is likely the light will skip yellow and change from green to red.

If you are approaching a traffic light that has been green for a long time, there is a good chance that it will turn yellow before you reach it. Start slowing down and be ready to stop.

32. When alley docking, you should first:
Position your vehicle directly in front of the alley.
Back up directly in front of the alley.
Stop parallel to the outer boundary of the alley.

If you are asked to alley dock, you should first pull past the alley and stop your vehicle in a position that is parallel to the outer boundary. From there, you should back your vehicle entirely into the alley parking area. Your vehicle should be parked in a straight position within the boundaries of the parking space.

33. If a vehicle is found to be over-length during a pre-trip inspection, the driver should:
Trim the length of the load.
Ask someone else to drive.
Ensure flags and lights indicating the oversize load are fastened securely.
Drive without making any changes.

If a pre-trip inspection reveals a load to be oversize, the driver must confirm that all required signs, flags, lamps, and reflectors are safely and properly mounted, and that and all required permits are in their possession.

34. If you’re not sure what to do to extinguish a fire in your vehicle, you should:
Use water.
Stay inside the vehicle.
Wait for the firefighters.

If you are not sure which kind of extinguisher should be used on a fire in your vehicle, particularly a hazardous materials fire, you should wait for the firefighters to arrive and allow them to extinguish it.

35. When taking the on-road driving skills test:
You do not have to take the test with the type of vehicle for which you want to be licensed.
You must take the test with the type of vehicle for which you want to be licensed.
It does not matter which type of vehicle you use to take the test.

CDL skills tests, including the on-road test, must be taken with the type of vehicle for which you want to be licensed.

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