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Louisiana
Louisiana CDL Knowledge Test Class A 2
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Q.1
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Drowsy driving is most common during:
The night.
The early morning.
The mid-afternoon.
Q.2
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When making a tight maneuver, you should:
Not use your mirrors, as they can be distracting.
Use your mirrors, but not too frequently.
Use your mirrors frequently.
Q.3
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How long should it take for oil pressure to reach a normal level when starting a vehicle?
A few seconds
About a minute
About four minutes
Q.4
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The more alcohol in the body:
The quicker the liver will digest the alcohol.
The less effect the alcohol will have on the individual.
The longer it will take to remove the alcohol from the body.
Q.5
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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.
Q.6
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As part of the vehicle inspection test, a CDL applicant will be asked to:
Check the engine oil level.
Replace a tire.
Remove the alternator belt.
Q.7
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If using spring brakes when hauling a heavy load, a complete stop will:
Be impossible.
Take a long time.
Take a short amount of time.
Q.8
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The tire load for a tire is stated:
On the side of the tire.
On the inside of the tire.
On the inside of the driver’s door.
Q.9
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Looking far ahead of your vehicle while driving is:
Discouraged, as there is little you can do about something far up the road.
Encouraged to help you identify hazards as early as possible.
Not permitted.
Q.10
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After a tire has been changed, the driver should stop after a short distance to:
Check the tightness of the lug nuts.
Ensure that the tire has remained clean.
Inflate the new tire.
Q.11
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When using a mirror, you should:
Look quickly at the mirror.
Stare at the mirror for a long time.
Use only the driver’s side mirror.
Q.12
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If convicted of a traffic violation in your personal car:
You must tell your employer.
Your CDL will not be affected.
Law enforcement will tell your employer.
Q.13
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The effects of alcohol are felt:
With the first drink.
Only after several drinks have been consumed.
At the legal limit.
Q.14
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An alcohol evaporator in an air brake system:
Makes the brakes work without squeaking.
Prevents ice from forming in the braking system.
Lubricates parts of the braking system.
Q.15
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Rust around wheel nuts may mean:
The nuts are too tight.
The nuts are loose.
The tires should be replaced.
Q.16
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Antifreeze helps to keep an engine functioning properly:
But only if it is cold outside.
To be more fuel efficient.
Both when it is cold and hot outside.
Q.17
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Rims with welding repairs:
Are not safe to be used.
Are acceptable on combination vehicles.
Are acceptable only when traveling at speeds under 40 mph.
Q.18
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When performing a pre-trip inspection and looking into the fifth wheel gap, you should:
Make sure there is a gap between the kingpin and the locking jaws.
Make sure the locking jaws are fully closed around the kingpin.
Make sure the locking jaws are loose.
Q.19
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While driving, ____ generally holds spring brakes in place.
Air pressure
Electricity
Gasoline
Q.20
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If a vehicle begins to hydroplane, the driver should:
Accelerate.
Release the accelerator and push in the clutch.
Pull in the clutch and brake.
Q.21
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When checking your windshield wiper blades, the blades should be:
Loose.
Sticky.
Secure.
Q.22
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A driver should:
Always use turn signals when changing lanes.
Only use turn signals if there is a vehicle next to them.
Not use a turn signal if a lane change is obvious.
Q.23
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Do not base your decision to shift gears on:
The speed of your engine (rpm).
The speed of the road (mph).
The actions of the vehicle next to you.
Q.24
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When stopping, the brake pedal should be:
Pressed down quickly with both feet.
Pressed down gradually.
Lifted up quickly.
Q.25
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Shortly after a tire has been changed, you should:
Stop to make sure the lug nuts are still tight.
Repair the brakes.
Deflate the tire to 10 psi.
Q.26
Submit
When driving on a long downhill slope, you should brake by:
Only using the brakes.
Mostly using the brakes and occasionally downshifting.
Downshifting and then using the brakes.
Q.27
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The parking brake in a newer vehicle is applied by:
Moving a lever to the right.
Pushing a yellow, diamond-shaped knob.
Pulling a yellow, diamond-shaped knob.
Q.28
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What should happen before the air pressure in an air brake system tank falls below 55 psi?
The warning light should activate.
The vehicle will be unable to shift out of gear.
The front lights should flash.
Q.29
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As the driver of a truck carrying a load, you are responsible for all of the following, except:
Inspecting the cargo.
Recognizing poorly balanced weight.
Knowing the phone numbers of all fire departments along your intended route of travel.
Q.30
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As part of the vehicle inspection test, you will be asked to:
Explain what you would inspect and why.
Replace an electrical fuse.
Unload the trailer.
Q.31
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Which of the following is true?
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.
Q.32
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Driving at night is usually:
More difficult than driving during the day.
Simpler than driving during the day.
Discouraged.
Q.33
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Which of the following is acceptable if found during a pre-trip inspection?
Tires of mismatched sizes
Tread of 3/32 of an inch in the grooves of the front tires
Tires manufactured by different makers
Q.34
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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.
Q.35
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If a driver has stopped on the road and is placing triangles to warn other motorists:
The triangles should be held between the driver and oncoming traffic.
The triangles should be carried behind the driver's back to prevent them from being seen by other drivers until they are placed.
The triangles should be held as low as possible.
Q.36
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When slowing down, you should ____ to warn other drivers
Use a turn signal
Sound your horn
Tap your brakes
Q.37
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An Anti-Lock Braking System (ABS):
Is not available for most trucks.
Is not helpful in most situations.
Is required on newer trucks.
Q.38
Submit
When driving in fog, you should:
Slow down.
Speed up.
Drive on the shoulder.
Q.39
Submit
When driving, it is important to:
Avoid using your mirrors while in heavy traffic.
Look only to the front and right side of the vehicle.
Look to the front, sides, and rear of the vehicle.
Q.40
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If there is a cargo fire in a box trailer:
The trailer doors should be opened.
The trailer doors should not be opened.
A large, heavy blanket should be put over the trailer.
Q.41
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An alcohol evaporator is especially important:
In cold weather.
In hot weather.
In dry weather.
Q.42
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In a dual air brake system, if one air system is very low on pressure:
None of the brakes will work at all.
Either the front or rear brakes will not be fully operable.
There is usually no noticeable effect.
Q.43
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After a vehicle is started, warning lights and buzzers:
Should stay on for several minutes.
Should turn off within a few seconds.
Should stay on until manually turned off.
Q.44
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Roads are especially slippery when it first begins to rain because:
Water is always very slippery.
The fresh rain mixes with oil on the roadway.
The water has nowhere to go.
Q.45
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During a pre-trip inspection, belts should be:
Loosened.
Checked for tightness.
Scrubbed clean.
Left alone and not inspected.
Q.46
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If one-fourth of the leaves in a leaf spring are missing when a vehicle is inspected:
The vehicle’s driver will be allowed to drive, but only at reduced speeds.
The vehicle will be put out-of-service until it is fixed.
The vehicle will be fine to drive since most of the spring is in place.
Q.47
Submit
If a vehicle is power steering-equipped, the hoses should be:
Checked for leaks.
Securely connected to the battery.
Carrying fuel.
Q.48
Submit
When performing a pre-trip inspection and looking into the fifth wheel gap, you should:
Make sure the locking jaws are open.
Make sure the locking jaws are fully closed around the kingpin.
Make sure the locking jaws are loose.
Q.49
Submit
Why are multi-speed axles and auxiliary transmissions used?
To make a vehicle operate more smoothly
To provide extra gears
To improve a vehicle's gas mileage
Q.50
Submit
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.
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