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Connecticut
Connecticut CDL Knowledge Test Class B 1
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Q.1
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Brake pads should:
Be covered with grease.
Be covered with oil.
Be covered with brake fluid.
Not have any oil or grease on them.
Q.2
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A driver can rely on front wheel braking to work:
On dry roadways only.
Under all conditions.
Under all conditions, except for snow.
Q.3
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To check the automatic transmission fluid level in some vehicles, you will have to:
Park your vehicle uphill.
Park your vehicle downhill.
Leave the vehicle running.
Q.4
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If an applicant does not receive an air brakes endorsement:
They cannot operate a vehicle with air brakes.
They can only operate a vehicle with air brakes in intrastate commerce.
They can only operate a vehicle with air brakes in interstate commerce.
Q.5
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Air storage tanks:
Are not allowed on a vehicle.
Hold compressed air for the brakes.
Should be drained of excess air after every trip.
Q.6
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If a driver begins to feel fatigued while driving, they should:
Continue driving.
Drink coffee.
Stop and rest.
Drive faster to finish the trip more quickly.
Q.7
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An encroachment is when:
A driver does not appear for their scheduled basic skills test.
A vehicle touches an exercise boundary line during the basic skills test.
A driver fails one section of the basic skills test.
Q.8
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When driving in fog, you should:
Use the windshield wipers.
Use the low beam headlights.
Use the high beam headlights.
Use the heater.
Q.9
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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.10
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Black ice is:
Usually thick.
Usually thin.
Not a hazard when driving.
Q.11
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Of the following, which is the most slippery surface?
Ice that is dry
Ice that is wet
Wet pavement
Q.12
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When using the controlled braking method in an emergency situation, you should:
Apply the brakes as hard as possible without locking the wheels.
Apply the brakes with about half of your usual force.
Apply the brakes so the wheels lock.
Apply the brakes with minimal pressure.
Q.13
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After an accident, flares should be used with caution because:
There may be spilled fuel on the ground that could ignite.
Other drivers may not see the flares.
Flares are expensive.
Other drivers may get confused about what is happening.
Q.14
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When pulled off on the side of the road:
A driver should keep the driver’s side door open.
A driver should turn on the emergency flashers.
The driver should wave their arms.
Q.15
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With your low beam headlights turned on, you should be able to see about ____ ahead of your vehicle.
15 feet
75 feet
100 feet
250 feet
Q.16
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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.17
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When preparing to enter traffic, you should do all of the following, except:
Wait for a large gap between vehicles.
Be prepared for your vehicle to accelerate slowly, especially if it is loaded.
Make sure you can completely cross traffic, if necessary, without interfering with traffic.
Assume other drivers will make room for your much larger vehicle.
Q.18
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When starting the engine as part of the pre-trip inspection, the driver should:
Listen for unusual noises.
Rev the engine.
Turn up the radio.
Turn on the heater.
Q.19
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ABS allows you to:
Drive faster.
Brake harder.
Stay in control when stopping.
Q.20
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Which of the following is not a good rule to follow when using turn signals?
Signal early.
Signal continuously.
Do not use your turn signal if you think others know what you plan to do.
Cancel your signal after the turn is completed.
Q.21
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In an engine compartment, loose belts will:
Not turn the water pump and/or fan properly, causing the engine to overheat.
Make the engine run more efficiently.
Make the fan run too much, causing the engine to run too coolly.
Last longer than tight belts.
Q.22
Submit
After the engine is started, warning lights and buzzers should all:
Stay on.
Flicker occasionally.
Turn off right away.
Turn off once the vehicle begins moving.
Q.23
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A burning tire should be:
Cooled with water.
Fanned with a blanket.
Cut up with an axe.
Covered with a tarp.
Q.24
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Which of the following is not a reason to use your mirrors?
You are changing lanes.
You are making a turn.
You are looking at fuel prices.
Q.25
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The driver of a commercial motor vehicle:
Can use any cell phone while driving.
Can only use a hands-free mobile phone while driving.
Can only use a cell phone on rural roads.
Can use a cell phone at night.
Q.26
Submit
Stopping distance can be affected by:
Speed.
Engine oil.
Time of day.
Traffic.
Q.27
Submit
If your tractor is equipped with ABS but your trailer is not, the ABS:
Will not be effective.
Will still improve your steering control.
Will make jackknifing easier.
Will allow others to see when you brake.
Q.28
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The application pressure gauge:
Shows how much air pressure is being applied to the brakes.
Shows the temperature of air being used in the braking system.
Shows the pressure of the air coming from the compressor.
Shows the number of times the brakes have been used.
Q.29
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When driving down a steep grade, your brakes may fade. What happens if brakes fade?
They become quieter.
They become less effective.
They work better than usual.
They work differently from front to back.
Q.30
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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.31
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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.32
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When driving under wet conditions, a lack of spray coming from the tires of other vehicles indicates that:
Ice has formed on the road.
The pavement is dry.
The spray is caught on the underside of the vehicle.
Q.33
Submit
The ____ tells a driver how much pressure is in the air tanks.
Application pressure gauge
Air compressor governor
Supply pressure gauge
Drum brake
Q.34
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If a vehicle is carrying hazardous cargo, placards must be placed:
Only on the front of the vehicle.
On the front, rear, and sides of the vehicle.
Only on the driver’s side of the vehicle.
Q.35
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Joggers who are wearing headsets:
Are usually aware of what is happening around them.
May not be aware of what is happening around them.
Can clearly hear sounds of traffic.
Usually don’t have music playing.
Q.36
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When experiencing cold weather, be sure to check your vehicle's alcohol evaporator:
Every three hours.
Every day.
Every other week.
Q.37
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When an S-cam turns inside a brake drum, the S-cam:
Presses the brake shoes against the inside of the brake drum.
Presses the brake shoes against the brake linings.
Presses the brake linings against the wheel axles.
Q.38
Submit
If a vehicle is power steering-equipped, the hoses should be:
Checked for leaks.
Securely connected to the battery.
Carrying fuel.
Q.39
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Interstate carriers must have what information affixed to the commercial motor vehicles in their fleet?
Trade name
Width of the truck
Length of the truck
Q.40
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Why should you regularly drain the air tanks?
Because the air gets old and needs to be replaced
Because compressed air contains some water and the water collects in the tanks
To allow for a change in pressure
Q.41
Submit
When approaching a railroad crossing, you should:
Rely on the posted signals to indicate when a train is approaching.
Rely on the movements of other motorists to indicate when a train is approaching.
Not rely on signals to indicate when a train is approaching.
Look to see if nearby plants are moving from the breeze created by a passing train
Q.42
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When traction is poor, a driver should accelerate especially slowly:
Because it is always good to accelerate slowly.
To keep from losing control of the vehicle.
To keep from accelerating faster than the vehicle ahead.
Q.43
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If you are driving in fog, you should not:
Turn on the four-way flashers.
Slow down.
Use your high beam lights.
Q.44
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During a basic vehicle controls skills test exercise, your vehicle's final position should be:
In the general area that was described by the examiner.
In the exact final position described by the examiner.
Within three feet of the final position described by the examiner.
Q.45
Submit
What is the number one cause of death and injury in a work zone?
Drivers speeding
Slow drivers
Animals crossing the road
Q.46
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Which of the following is not an example of a driving hazard?
An accident on the roadway
An open road
A police car assisting a motorist on the side of the road
An ice cream truck
Q.47
Submit
A Class 1 hazardous material is:
An explosive.
Liquid.
Corrosive.
Q.48
Submit
Which of the following is not an activity that causes a distraction?
Adjusting the radio
Adjusting the CD player
Eating
Checking your mirrors
Q.49
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Why should part of the vehicle be visible in a properly adjusted side mirror?
It limits the view behind the trailer.
It provides a point of reference for the driver.
It allows the driver to see stickers placed on the side of the trailer.
Q.50
Submit
When leaving your vehicle:
The air brakes should be applied.
The parking brake should be applied.
Brakes should not be applied if the vehicle is left out of gear.
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