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Arizona
Arizona CDL Knowledge Test Class B 2
Answers
Q.1.
Hanging meat:
Should never be transported by trailer.
Can be an unstable load.
Must be approved by the Environmental Protection Agency (EPA).
Q.2.
What does the air compressor governor do?
It stops the compressor from pumping air.
It turns on the air compressor.
It stores the compressed air.
Q.3.
What is a Gross Vehicle Weight Rating (GVWR)?
The value stated by the manufacturer as the loaded weight of a single vehicle
The rating of a tire
The rating of a combination vehicle per axle
Q.4.
When applying your brakes, the vehicle should:
Pull to one side.
Squeak.
Not pull to either side.
Q.5.
You should test the low pressure warning signal by:
Turning on the engine and applying the trailer hand brake.
Rapidly pressing and releasing the brake pedal.
Removing wheel chocks and disengaging the parking brake.
Q.6.
Air brakes use ____ to function.
Compressed air
Liquid air
Nitrogen
Q.7.
When starting a vehicle, warning lights and buzzers:
Should not light up or sound.
Should turn on and shut off quickly.
Should turn on and remain on.
Q.8.
A slack adjuster should move no more than ____ from where it is attached to the push rod.
Two inches
Five inches
One inch
Q.9.
What is the number one cause of death and injury in a work zone?
Drivers speeding
Slow drivers
Animals crossing the road
Q.10.
Which of the following is not required emergency equipment?
Red reflective triangles
Flares
A flashlight
Q.11.
When making a left turn, you should start the turn:
Before reaching the center of the intersection.
No sooner than the center of the intersection.
After your rear wheels have passed the center of the intersection.
Q.12.
Alcohol evaporators are:
Illegal.
Used to introduce alcohol into air brake systems.
Only allowed in the northern parts of the state.
Q.13.
When changing lanes:
You should not use your mirrors.
You should use your mirrors.
You should not use your turn signals.
Q.14.
Before beginning to drive downhill, you should:
Take your vehicle out of gear.
Shift into a lower gear.
Move into the left lane.
Q.15.
When driving a vehicle equipped with an Anti-Lock Braking System (ABS), you should:
Always pump the brakes several times before holding down the brake pedal.
Brake normally.
Press down the brake pedal as hard as possible every time you slow or stop.
Q.16.
If you doubt that you have enough space to safely drive under a bridge or sign, you should:
Drive faster.
Drive more slowly.
Drive on the shoulder.
Q.17.
On slippery roads, you should:
Accelerate and slow down frequently.
Adjust your driving to match weather conditions.
Tailgate other vehicles.
Q.18.
Air tank drains should:
Only be used by mechanics.
Only be used when it is wet outside.
Be used to drain the tanks completely.
Q.19.
When transporting a load, the cargo should be inspected:
By another driver.
Only after a trip is finished.
Every time you take a break.
Q.20.
Hanging meat as cargo is usually:
Very stable.
Easy to handle.
Unstable.
Q.21.
What is a tire load?
The minimum safe weight a tire can carry
The maximum safe weight a tire can carry
The weight of a tire
Q.22.
A distracted driver:
Usually follows the rules of the road.
Usually has slowed perception.
Is a good person to follow.
Q.23.
When trying to put out an electrical fire, you should:
Use water.
Use a B:C extinguisher.
Use an X extinguisher.
Q.24.
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.25.
When a vehicle is started, the coolant temperature should:
Decrease.
Rise slowly.
Jump quickly.
Q.26.
When traveling down a downgrade, the speed of a vehicle will likely:
Decrease.
Stay the same.
Increase.
Q.27.
How should you brake if your vehicle's ABS is not working?
Brake normally, as you will still have functioning brakes.
Pump the brake repeatedly.
Press the brake pedal down as hard as you can.
Q.28.
If there is a fire in your vehicle, you should not:
Park in an area away from buildings, trees, brush, and other vehicles.
Pull into a service station.
Notify emergency services of your problem and your location.
Q.29.
A dual air brake system:
Consists of two separate air brake systems that share a single set of controls.
Is a single air brake system with two different sets of controls.
Consists of one air brake system for the left side of the truck and one system for the right side of the truck, each with its own set of controls.
Q.30.
Livestock:
Should never be carried on a trailer.
Should be placed in the front of a trailer.
Can create unstable driving conditions.
Q.31.
If you are driving and the ABS light comes on, it means that the ABS:
Cannot work due to weather conditions.
Has just been activated.
Is not working properly.
Q.32.
When leaving your vehicle unattended:
The parking brake should be used.
The parking brake only needs to be used if the vehicle is parked on a slope.
The parking brake should not be used, as it can damage the tires.
Q.33.
If exiting a bus, a driver must:
Never make contact with the handrail.
Maintain contact with the handrail.
Move quickly.
Q.34.
Do not operate a vehicle if any brake drums have cracks that are larger than ____ of the width of the friction area.
One half
One third
One fifth
Q.35.
Loading cargo improperly:
Improves fuel efficiency.
Can be dangerous.
Usually makes unloading easier.
Q.36.
Texting while operating a CMV is:
Illegal.
Acceptable on rural roads.
Acceptable for drivers contacting their employers.
Q.37.
If feeling tired while driving, it is best to:
Take a pep pill.
Get some rest.
Continue driving.
Q.38.
After an accident, flares should be used with caution because:
There may be fuel spilled on the ground that could catch fire.
Other drivers may not see the flares if the weather is sunny.
Flares are expensive.
Q.39.
An example of required emergency equipment is:
A spare electrical fuse.
A loud horn.
A battery-operated flashlight.
Q.40.
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.
Q.41.
When entering traffic, a large vehicle usually needs:
Less space than is needed for a car.
About the same amount of space as is needed for a car.
More space than is needed for a car.
Q.42.
If convicted of any traffic violations, excluding parking violations, you must:
Notify your employer within 30 days.
Place a sign on the back of your vehicle noting the conviction.
Forfeit your CDL for six months.
Q.43.
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.44.
Why should the steps of a pre-trip inspection be done in the same order each time?
Because you will be less likely to forget to check something
Because it will be faster
Because it is required by law
Q.45.
The weight of a truck:
Usually has no impact on stopping distance.
Is a major factor affecting stopping distance.
Is not as important as the type of cargo in determining stopping distance.
Q.46.
Emergency equipment, such as fire extinguishers, are:
Only needed in vehicles transporting hazardous materials.
Only needed for interstate travel.
Required in all commercial motor vehicles.
Q.47.
Roads are especially slippery right after it begins to rain because:
The water mixes with oil and grease on the road.
Tires are not made to drive in wet weather.
The water yet hasn't absorbed the dirt and grease.
Q.48.
For safety purposes, when should you turn off a retarder?
When the roadways are slippery
When you have a passenger
When you are carrying a heavy load
Q.49.
If the brakes pull to one side or the other when used:
They are working properly.
They need to be checked.
They will be the most effective.
Q.50.
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.
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