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Tennessee
Tennessee CDL Knowledge Test Class A 2
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Q.1
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When testing a parking brake, the vehicle should:
Not be running.
Be placed in a low gear while the driver attempts to pull forward.
Be inspected by a professional mechanic.
Be driven while the parking brake is applied.
Q.2
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Dual tires should:
Not both be in contact with the road surface.
Not touch one another.
Be different sizes from one another.
Q.3
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How many air storage tanks are used in an air brake system?
Two tanks
Four tanks
Six tanks
The number varies.
Q.4
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In bad weather, many drivers:
Like to drive in front of trucks.
Like to be on the side of trucks.
Like to follow trucks.
Like to drive without using their lights.
Q.5
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An Anti-Lock Braking System (ABS):
Cannot be used with air brakes.
Should be used on dry pavement.
Can assist in maintaining control when braking.
Should only be used if all axles have ABS.
Q.6
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Brake fade is a result of:
Brakes being exposed to sunlight.
Brakes being exposed to moisture.
Excessive use of the brakes.
Q.7
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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.8
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If your wheels being to spin when accelerating on a poor traction surface, you should:
Use the brakes.
Take your foot off the accelerator.
Continue to accelerate.
Q.9
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A registered vehicle should have:
A mirror on the left side only.
Mirrors on both the left and right sides.
A mirror on the right side only.
Only a rearview mirror.
Q.10
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In a dual air brake system:
Each system has separate air tanks, hoses, and lines.
The systems share air tanks, but each has its own separate hoses and lines.
Each system uses the same lines and hoses.
One system is the main braking system and a second system is ready to be used if the first one fails.
Q.11
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If feeling tired while driving, it is best to:
Take a pep pill.
Get some rest.
Continue driving.
Q.12
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Which of the following is acceptable if found during a pre-trip inspection?
Tires of mismatched sizes
Cracks in the tires
Tires manufactured by different makers
Q.13
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The air compressor governor controls:
When the air compressor pumps air into the air storage tanks.
How fast air is pumped into the air storage tanks.
The temperature of air pumped into the air storage tanks.
The speed of the vehicle.
Q.14
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When parked on the side of the road, you should:
Use only the rear flashing lights.
Use one set of turn signals.
Use your high beam headlights.
Use your four-way flashers.
Q.15
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During an applied leakage test, what is the maximum leakage rate that is safe for a single vehicle with air brakes?
10 psi in one minute
5 psi in one minute
3 psi in one minute
Q.16
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How can you check for a leak in hydraulic brakes?
Pump the brake pedal three times, then hold down the pedal for five seconds. If the pedal moves, there may be a problem.
Push the brake pedal down as far as possible and release. If the brake pedal returns to its normal position, there may be a problem.
Push the brake pedal down as far as possible and release. If the brake squeaks, there may be a problem.
Q.17
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If a vehicle gets stuck on a railroad track, the driver should:
Stay in the vehicle and try to restart the vehicle.
Get out of the vehicle and walk away from the tracks.
Try to flag down another vehicle to give them a push.
Wait in the vehicle for a law enforcement officer to arrive.
Q.18
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A skid caused by acceleration can likely be solved by:
Removing your foot from the accelerator.
Braking.
Swerving to the right.
Swerving to the left.
Q.19
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What kind of force must emergency brakes use?
Air pressure
Mechanical
Heavy
Electrical
Q.20
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When you leave your vehicle, you should:
Apply the parking brake.
Apply the regular brake.
Leave the keys in the ignition.
Q.21
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When doing an inspection, make sure your brake pads are:
Covered in grease.
Covered in coolant.
Covered in oil.
Free of oil and grease.
Q.22
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Bracing is used to:
Make items stand taller in a trailer.
Prevent items from moving in a trailer.
Make it easier to unload items from a trailer.
Q.23
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When the spring brakes are activated in a vehicle with air brakes, you should never:
Turn on the lights.
Turn the vehicle off.
Push the brake pedal down.
Open the trailer doors.
Q.24
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A broken exhaust system:
Can allow poisonous fumes into the cab.
Does not cause problems.
Should not cause concern.
Helps the vehicle run better.
Q.25
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Air tank drains:
Allow rain water to enter the tanks.
Are used to drain water and oil from the tanks.
Should never be opened.
Must remain open while driving.
Q.26
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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.
Q.27
Submit
Hanging meat as cargo is usually:
Easy to transport.
Dangerous, due to the possible scent.
Unstable.
Q.28
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Blocking cargo:
Should never be done.
Should be done to prevent the shifting of cargo.
Can only be done with metal pieces.
Q.29
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Passive railroad crossings:
Are controlled by flashing lights.
Are not controlled by any type of traffic control device.
Have gates that lower when trains are approaching.
Should never be crossed by a CMV.
Q.30
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You must put out emergency warning devices within ____ of stopping on the side of the road.
One minute
10 minutes
45 minutes
Two hours
Q.31
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When you need to brake, how can you warn drivers behind you?
Tap on the brakes a couple of times.
Stick your arm out the window.
Swerve within your lane.
Change lanes.
Q.32
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Driving at night is:
Safer than driving during the day.
Just as safe as driving during the day.
More dangerous than driving during the day.
Q.33
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You will often have to drive your vehicle under bridges and overpasses. If approaching such an opening, you should:
Assume the posted clearance height is accurate.
Assume the posted clearance height is inaccurate.
Measure the height of the opening before proceeding.
Q.34
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When it is difficult for others to see your vehicle, such as at dawn or dusk, you can help other drivers by:
Keeping your lights off.
Turning your lights on.
Driving on the shoulder.
Waving an arm out the window.
Q.35
Submit
On a wet road, you should reduce your speed:
By about one-half.
By about one-third.
By about one-quarter.
By about one-eighth.
Q.36
Submit
When you need to stop in an emergency, you should:
Lock the wheels and skid to a stop.
Stop in a way that keeps your vehicle in a straight line.
Stop in a way that turns your vehicle.
Expect your vehicle to slow down more quickly than usual.
Q.37
Submit
Pressing and releasing the brake pedal unnecessarily can:
Release air faster than it can be replaced.
Add more air to a brake system.
Make the brake pedal harder to depress.
Create a loud noise.
Q.38
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Once stopped as a part of the stop/start maneuver, you should:
Use the four-way flashers.
Not use the four-way flashers because it is just a test, not an emergency.
Leave the vehicle in first gear.
Park in front of a fire hydrant.
Q.39
Submit
When slowing down, you should ____ to warn other drivers
Use a turn signal
Sound your horn
Tap your brakes
Q.40
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After starting a trip while transporting cargo:
You will not need to inspect the cargo.
You only need to inspect the cargo if others alert you to a problem.
The cargo should be inspected within 50 miles of beginning the trip.
Q.41
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Which of the following is not a possible cause of a fire?
Under-inflated tires
Electrical system failures
Flammable cargo
Rolling down the window
Q.42
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States verify that a CDL or CLP driver has only one such license by:
Making phone calls to surrounding states.
Using a computerized system that links all states.
Asking the driver.
Looking through the driver's wallet.
Q.43
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To use the stab braking method in an emergency situation, you should:
Apply the brakes completely until the wheels lock up, release the brakes until the wheels start rolling, then repeat the process.
Apply the brakes about halfway, but keep the wheels rolling.
Fully apply the brakes, let the wheels lock up, and hold the brake pedal down, keeping the wheels locked until the vehicle stops.
Apply the emergency brake.
Q.44
Submit
The leading factor resulting in death and injury in work zones is:
Speeding.
Stopping.
Under-inflated tires.
Q.45
Submit
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.
Q.46
Submit
Who is responsible for inspecting a vehicle's cargo?
The person who loaded it
The owner of the trucking company
The owner of the cargo
The driver
Q.47
Submit
Friction in an S-cam brake is caused when the brake shoes and linings:
Press against the outside of the brake drum.
Press against the inside of the brake drum.
Push against each other.
Q.48
Submit
When checking its automatic transmission fluid, the vehicle:
Should be placed on an incline.
Should be placed on a decline.
May have to be running.
Should be lifted with a jack.
Q.49
Submit
An applicant will be denied a hazardous materials endorsement if they:
Are a U.S. citizen.
Are wanted for a misdemeanor.
Are wanted for certain felonies.
Already have a driver license.
Q.50
Submit
Air tank drains should:
Only be used by mechanics.
Only be used when it is wet outside.
Be used to drain the tanks completely.
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