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Nevada
Nevada CDL Knowledge Test Class B 1
Answers
Q.1.
Header boards:
Should never be used.
Protect drivers from being hit by cargo.
Protect drivers' heads when they are entering the cab of a truck.
Q.2.
To avoid a crash:
Braking is always the best option.
Swerving may be more effective than braking.
Drivers should leave 100 yards of distance between their vehicle and the next.
Q.3.
A modulating control valve can control the:
Spring brakes.
Landing gear.
Air brakes.
Anti-lock braking system (ABS).
Q.4.
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.5.
When driving under wet conditions, what does a lack of spray from other vehicles indicate?
Ice has formed on the road.
The pavement is dry.
The spray is caught on the underside of the vehicle.
The tires have soaked up all the moisture.
Q.6.
When a vehicle is started:
The brakes should be locked up.
Warning lights should turn on, then quickly turn off.
The coolant temperature should decrease.
The hood must be open.
Q.7.
Radial and bias-ply tires:
Should be used together on all axles.
Should be used together, but only on the rear axle.
Should not be used together.
Q.8.
If a vehicle is equipped with power steering, you should inspect:
The hoses.
The pumps.
Both of the above.
Q.9.
Overloading a vehicle with cargo can affect all of the following, except:
Steering.
Braking.
Speed control.
Cruise control.
Q.10.
What must be on an air tank in an air-braked vehicle?
A check valve
A lock
A trap door
An oxidizer
Q.11.
How many air storage tanks are used in an air brake system?
Two tanks
Four tanks
Six tanks
The number varies.
Q.12.
If approaching a railroad crossing while driving a placarded vehicle, you should always:
Activate your four-way flashers.
Stop within five feet of the tracks.
Change gears while on the tracks.
Change lanes while on the tracks.
Q.13.
If confronted by an aggressive driver, you should:
Try to get out of their way.
Avoid making eye contact.
Ignore their hand gestures.
All of the above.
Q.14.
If equipped, a header board should:
Be damaged.
Be loose.
Be strong enough to contain cargo.
Light up when the engine is started.
Q.15.
Who is responsible for cargo that has been loaded onto a truck?
The person who loaded the truck
The supervisor of the company
The truck driver
Q.16.
To confirm that a trailer has ABS, you can:
Look under the trailer for wheel speed sensors coming from the back of the brakes.
Look under the hood for the ABS sticker.
Look at the tires.
Remove a tire and look for the ABS sensor on the axle.
Q.17.
When starting a vehicle, the coolant temperature gauge should:
Not change from its original position.
Gradually rise to the normal operating range.
Jump quickly to the normal operating range.
Flash until it reaches the normal operating range.
Q.18.
When starting the engine of a truck with a trailer, how can you tell if the Anti-Lock Braking System (ABS) is not working?
The yellow light on the rear of the trailer will stay on.
The red light on the trailer will flash three times and then stay on.
All the rear lights on the trailer will flash and then shut off.
The blue light near the driver's door will light.
Q.19.
Areas of the road that are shaded:
Usually do not freeze.
Usually do not contain moisture, so they can’t freeze.
Will remain slick after ice on other areas of the road has melted.
Should always be avoided.
Q.20.
What should you do if your vehicle gets stuck on railroad tracks?
Stay in the vehicle.
Get out of the vehicle and call for assistance.
Continue trying to remove the vehicle from the tracks.
Walk down the tracks to look for an oncoming train.
Q.21.
When other vehicles have trouble seeing you at dawn or dusk, you can increase your visibility by:
Turning on your four-way flashers.
Honking your horn.
Turning on your headlights.
Turning on your windshield wipers.
Q.22.
Livestock:
Should never be transported on a trailer.
Must be inspected by a law enforcement officer.
Can cause unsafe handling when being transported on a trailer due to their movement.
Can only be transported by a person registered as a farmer.
Q.23.
When checking windshield wiper blades, they should be:
Soft.
Secure.
Brittle.
Q.24.
The leakage rate for a triple combination vehicle with air brakes should be no more than ____ in one minute during a static leakage test.
8 psi
5 psi
3 psi
Q.25.
If you’re unfamiliar with the area in which you must back up, you should:
Get out of your vehicle and walk around the area to become more familiar with it.
Not use both mirrors, as that can cause too much distraction.
Wait for someone else to back up in the area so you see how they do it.
Turn on your high beam headlights.
Q.26.
To make it easier to leave a parked position, you should park:
In a way that allows you to back up when exiting.
In a way that allows you to pull forward when exiting.
Only on the side of roadways, not in parking lots.
Q.27.
Emergency brakes are:
Not required on trucks.
Only required on trailers.
Required on tractors.
Only required when transporting hazardous materials.
Q.28.
To ensure you do not interfere with traffic while driving a heavy vehicle, you should:
Switch gears while driving uphill.
Try to pass other vehicles while driving uphill.
Stay in the right lane.
Ride the brakes while driving downhill.
Q.29.
If the spring brakes are on, you should:
Not use the brake pedal.
Press the accelerator.
Move the steering wheel.
Be especially careful because the brakes may fail.
Q.30.
After starting a trip while transporting cargo:
You will not need to inspect the cargo.
The cargo should only be inspected if it is making noise.
The cargo should only be inspected if there is an obvious concern.
The cargo should be inspected after 50 miles on the road to ensure it is still properly secured.
Q.31.
Trailers should:
Be overloaded to improve efficiency.
Not be overloaded because it is dangerous.
Not be overloaded because drivers are only paid to transport certain weights.
Be loaded with all the weight directly behind the cab.
Q.32.
The minimum acceptable tread depth for rear tires is:
1/64 of an inch.
1/32 of an inch.
2/32 of an inch.
Q.33.
When driving a truck requiring a CDL:
You do not need to wear a seat belt.
You are required to wear a seat belt, but only if transporting more than 500 pounds of cargo.
You must always wear a seat belt.
Q.34.
You should always be able to stop within:
10 feet of your vehicle.
1,000 feet of your vehicle.
Your view of the road ahead.
A minute of hitting the brakes.
Q.35.
Hydroplaning:
Rarely happens to trucks.
Usually happens when vehicles are traveling at speeds above 65 mph.
Can occur with a minimal amount of water on the roadway.
Q.36.
When you double your speed from 20 to 40 mph, your vehicle's braking distance will become ____ times longer.
Two
Three
Four
10
Q.37.
How should you check your hydraulic brakes?
Pump the brakes three times, then apply firm pressure to the brake pedal for five seconds. The brake pedal should not move.
Pump the brakes three times, then apply firm pressure to the brake pedal for five seconds. The brake pedal should slowly move toward the floor.
Pump the brakes three times, then apply firm pressure to the brake pedal for five seconds. The brake pedal should slowly rise.
Pump the brakes three times, then apply firm pressure to the brake pedal for five seconds. The brake pedal should be easy to push to the floor.
Q.38.
In order to receive a hazardous materials endorsement, a person must complete all of the following, except:
A HazMat knowledge test.
An FBI fingerprint check.
A CIA intelligence check.
Q.39.
After a trip:
A vehicle should be placed out-of-service.
A vehicle's oil should be changed.
A vehicle's after-trip inspection should be completed.
A vehicle's battery should be disconnected.
Q.40.
If driving in a foggy area, you should not:
Decrease your speed.
Increase your speed.
Use your low beam headlights.
Turn on your four-way flashers.
Q.41.
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.
Which of the following is the best advice for driving in fog?
Try not to drive in fog.
Use your high beam headlights.
Turn off your lights.
Q.43.
How much water needs to be on the surface of a road for a vehicle to hydroplane?
Usually several inches
A good amount, such as a large puddle
A small amount
None
Q.44.
A vehicle equipped with an Anti-Lock Braking System (ABS) uses a ____ light to warn that the system is not working properly.
Green
Yellow
Orange
White
Q.45.
When operating a vehicle with a dual brake system, a driver should:
Let the vehicle warm up before driving to ensure that fuel reaches the engine.
Wait to begin driving until the air compressor builds up a minimum pressure of 100 psi in both the primary and secondary systems.
Begin driving just after the vehicle starts.
Pump the pedal about 20 times to build pressure, then begin driving.
Q.46.
Your CDL will be revoked if:
You want to add an endorsement.
Your privilege to operate your personal vehicle is revoked.
You have not paid a toll.
Q.47.
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.48.
What can happen 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.
The driver will be asked to decrease the weight of the load.
Q.49.
A convex mirror is sometimes called a ____ mirror.
Bug-eye
Square
Helper
Q.50.
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.
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