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Kentucky CDL DMV Knowledge Test Class A 1

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

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1. When transporting a load, the cargo should be inspected:
Only at the beginning of a drive.
Only after driving a long distance.
After every break.

Cargo and its securing devices must be inspected before starting a trip. After beginning a trip, the driver should check the load and securing devices within the first 50 miles on the road, every three hours or 150 miles traveled, and after every break.

2. When using a fire extinguisher to put out a fire, you should:
Stay as far away as possible from the flames.
Aim at the flames.
Use any extinguisher on every type of fire.

Stay as far away from a fire as possible and aim your fire extinguisher at the source or base of the fire, not at the flames. It may be appropriate to extinguish certain fires with water. If you are unsure of how to treat a specific fire, you should wait for trained firefighters to arrive.

3. When in heavy traffic, the safest driving speed is:
Slower than the speed being driven by surrounding traffic.
The same speed being driven by surrounding traffic.
Faster than the speed being driven by surrounding traffic.

In heavy traffic, it is safest to travel at the same speed as other vehicles. If two vehicles continue to drive in the same direction at the same speed, they cannot hit each other.

4. Blocking is used to:
Prevent cargo from shifting.
Prevent cargo from being loaded too high.
Prevent cargo from being unloaded too quickly.

Blocking is used in the front, in the back, and/or on the sides of a piece of cargo to keep it from sliding while the vehicle is in motion.

5. When loading a trailer, you should:
Place as little weight as possible over the axles.
Place a well-balanced amount of weight over the axles.
Not be concerned with how the weight is distributed.

A load of cargo must be properly balanced. Placing too much weight over an axle can damage the axle and make it more difficult for you to steer. Placing too little weight over an axle can cause poor traction, also leading to difficult handling.

6. 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.

7. Alcohol is removed from the body:
By exercising.
At a fixed rate.
More quickly if the person stays awake.

The liver removes alcohol from the body at a fixed rate. Despite popular belief, tricks like drinking coffee or taking a cold shower will not speed up the process. The only way to become sober is to allow your body the time it needs to remove the alcohol from your system.

8. If a tire fails, you should:
Use the brakes.
Stay off the brakes.

Braking after a tire fails can result in a loss of control. Stay off your brakes, if possible, until your vehicle has slowed considerably.

9. 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.

10. When adjusting your mirrors before a trip:
No part of your vehicle should be visible in any mirror.
Part of your vehicle should be visible in the mirrors.
More than half of each mirror should show the vehicle.

When properly adjusted, your mirrors should each display some part of your vehicle. Being able to see your own vehicle in your mirrors will give you a point of reference when judging the positions of other objects.

11. When drivers turn, they usually:
Look in the direction of the turn.
Look in the direction opposite the turn.
Look behind their vehicles.

When turning, drivers usually look in the direction of their turn. If a driver fails to signal before a turn or lane change, their body movements may still provide a clue that they are planning to turn.

12. Broken suspension parts:
Should be repaired immediately.
Should be repaired, but not immediately.
Cannot be identified.

The suspension system performs the vital functions of holding up the vehicle and its load while keeping the axles in place. Defects in the suspension are therefore extremely dangerous.

13. When backing a truck, you should:
Only use the side mirrors on the driver’s side.
Use both side mirrors.
Never use a helper.

Backing a commercial motor vehicle is always dangerous because you cannot see everything behind you. When backing, make frequent checks of the mirrors on both sides of the vehicle. Use a helper whenever possible.

14. To prevent becoming an aggressive driver you should:
Increase your speed.
Make gestures at other drivers.
Give other drivers the benefit of the doubt.

To avoid engaging in aggressive driving behavior, it is helpful to give other drivers the benefit of the doubt. Assume that they have valid reasons for what they are doing and don't take their actions personally.

15. Items on a flatbed:
Are usually heavy enough to not need to be strapped down.
Should not be strapped down if you are driving more slowly than 35 mph.
Must always be secured.

On flatbed trailers and trailers without sides, cargo must be tied down to prevent it from shifting or falling off in transit.

16. While driving a vehicle, if an unusual noise or feeling occurs, the driver should:
Assume it is not a concern and continue driving.
Hope the vehicle makes it until it is switched to another driver.
Check out the situation to determine the proper solutions.

Use your senses during trips to help you identify mechanical issues. If you see, hear, smell, or feel anything that could indicate trouble, you should stop and check it out.

17. During an applied leakage test, the maximum leakage rate for a triple combination vehicle is ____ in a minute.
2 psi
4 psi
6 psi

It is important to know the maximum air loss rate that is safe for your specific vehicle. A triple combination should have a leakage rate no higher than 6 psi in a minute during an applied leakage test.

18. People working on a disabled vehicle:
Are probably aware of the roadway.
May be distracted by the repair and not pay attention to the roadway.
Are exempt from traffic laws.

Be cautious when driving near people who are working on a disabled vehicle on the side of the road. They may be focused on the repair and not paying attention to nearby traffic.

19. In a dual air brake system:
Air tanks are shared between both systems.
Each system has its own air tanks.
You must designate which system you are using.

There are two air brake systems in a dual air brake system. The systems share a set of brake controls, but each system has its own tanks, hoses, and lines.

20. Backing with a trailer is dangerous because:
It is difficult for the driver to see behind the trailer.
There may be extra weight in the front of the vehicle.
Cargo may fall out of the trailer.
Trailers are not made to be driven in reverse.

Backing is always dangerous because it is impossible to see everything that is behind your vehicle. Only drive in reverse if it is absolutely necessary.

21. If a vehicle begins to hydroplane, the driver should:
Release the accelerator and push in the clutch.
Pull in the clutch and brake.

If your vehicle begins to hydroplane, you can regain control by releasing the accelerator and pushing in the clutch.

22. When taking a driving test:
You must supply the same type of vehicle for which you will require a CDL.
You may supply any type of vehicle, even if it is not the type of vehicle for which you will be using with the CDL.
The testing station will supply the vehicle.

Skills tests must be taken in the type of vehicle the applicant plans to drive. The applicant is generally responsible to supply the testing vehicle.

23. What eliminates alcohol from the bloodstream?

The body processes alcohol at a fixed rate that cannot be sped up through tricks like drinking coffee. The only way to sober up is to give the body the time it needs to remove the alcohol on its own.

24. If feeling tired while driving, it is best to:
Take a pep pill.
Get some rest.
Continue driving.

If you begin to feel tired while driving, the only safe action to take is to stop and get some sleep. Trying to fight the fatigue and press on is very dangerous and can result in a fatal crash. You should not rely on artificial stimulants; these may help keep you awake a while longer, but they won't make you more alert.

25. Placards should be used:
Any time a vehicle is carrying hazardous materials.
When there is extra space on a truck.
Only when the amount of hazardous materials on a truck exceeds 200 pounds.

Warning placards are required to be used any time a vehicle is carrying designated types and amounts of hazardous materials. A placarded vehicle must display placards on all four of its sides.

26. What does blocking cargo do?
Holds the cargo in a large box
Prevents cargo from sliding in transit
Prevent others from buying the cargo

Blocking and bracing are used to prevent cargo from shifting in transit.

27. What color light indicates a vehicle's ABS is not working?

On vehicles with Anti-Lock Braking Systems (ABS), yellow malfunction lamps alert the driver to ABS malfunction.

28. Rough acceleration:
Can damage parts of a vehicle.
Is necessary to warm up parts of a vehicle.
Is encouraged to improve a vehicle's gas mileage.

Always speed up smoothly and gradually so that your vehicle does not jerk. Rough acceleration can cause mechanical damage.

29. What is the Gross Vehicle Weight Rating (GVWR)?
The weight stated by the manufacturer as the loaded weight of a single vehicle
The maximum weight that can be pulled by a vehicle
The minimum weight that can be hauled by a vehicle

A Gross Vehicle Weight Rating (GVWR) is the value specified by the manufacturer as the loaded weight of a single vehicle.

30. To make your vehicle more visible during the day, you should:
Use your low beam headlights.
Use your high beam headlights.
Use your clearance lights.

Low beam headlights should be used for best visibility, even during the day. Using high beam headlights around other drivers can be dangerous.

31. When it is difficult to see other vehicles, such as at dawn or dusk, you should:
Keep your lights off.
Turn your lights on.
Drive on the shoulder.

When driving at dawn, at dusk, or in inclement weather, you should use your headlights on their low beam setting to increase your visibility.

32. 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.

33. To determine if a vehicle can handle a load, you must know:
The vehicle’s suspension rating.
The tire rating for the front tires only.
The tire rating for the rear tires only.

It is a driver's responsibility to make sure their vehicle is not overloaded. They must be aware of legal weight limits and the maximum weight that their vehicle is rated to carry, including the weight capacity rating of the suspension system.

34. If you are feeling tired and yawning a lot while you are driving, you should:
Pull over and take a nap.
Get some coffee.
Drive faster.

If you begin to feel tired while driving, you should stop to get some sleep. Trying to push on to reach your destination while tired is dangerous. You should not rely on caffeine to keep you awake.

35. When checking your windshield wiper blades, the blades should be:

When inspecting your vehicle, you should check the wiper blades for damage, stiff rubber, and proper securement.

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