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Driving Test
North Carolina
North Carolina CDL Knowledge Test Class B 2
Answers
Q.1.
Pre-trip inspections should be done:
Differently each time in order to place emphasis on different items.
The same way each time to prevent you from forgetting anything.
Once in a while.
Q.2.
During the driving test, the examiner will be scoring you on:
Attitude.
How quickly you arrive to your destination.
Your general driving behavior.
Q.3.
Which of the following may result in an applicant being denied a hazardous materials endorsement?
They are considered a security threat by the Transportation Security Administration (TSA).
They are a lawful U.S. citizen.
They work for a foreign company.
They do not have perfect vision.
Q.4.
A header board is used to:
Allow a driver to see behind them.
Protect the driver from moving cargo.
Provide extra storage capacity.
Prevent the driver from leaving the tractor.
Q.5.
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.6.
When stopping in an emergency situation, you should:
Veer your trailer to the right and stop.
Stop in a straight line.
Veer your trailer to the left and stop.
Q.7.
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.8.
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.9.
When passing a row of parked vehicles, a driver should:
Stay close to the vehicles.
Watch for signs of a person exiting a vehicle.
Flash their headlights.
Q.10.
If convicted of a traffic violation, you must inform your employer:
Within three hours.
Within a week.
Within 30 days.
Q.11.
Pre-trip inspections are:
Required by law.
Recommended.
Needed only for trips longer than 100 miles in length.
Q.12.
If exiting a bus, a driver must:
Never make contact with the handrail.
Maintain contact with the handrail.
Move quickly.
Q.13.
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.14.
When inspecting your brakes, a slack adjuster should move ____ from where it is attached to the push rod.
At least three inches
More than two inches
Up to five inches
No more than one inch
Q.15.
Which of the following is not a warning sign of fatigue?
Difficulty focusing
Staying within your lane
Rubbing your eyes
Q.16.
If a vehicle is power steering-equipped, the hoses should be:
Checked for leaks.
Securely connected to the battery.
Carrying fuel.
Q.17.
The maximum amount of play that is safe on a 20-inch steering wheel is:
One-quarter of an inch.
Two inches.
10 inches.
Q.18.
What kind of force must emergency brakes use?
Air pressure
Mechanical
Heavy
Electrical
Q.19.
On a slippery surface, stopping distance:
Is longer than on a regular driving surface.
Is not as long as on a regular driving surface.
Is about the same as on a regular driving surface.
Q.20.
When should you slow for a curve?
Before entering the curve
While in the curve
After the curve
Q.21.
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.22.
A CMV should:
Not have a fire extinguisher, unless it is being used to transport hazardous materials.
Not have a fire extinguisher, unless it will be traveling through remote areas.
Have a fire extinguisher and other emergency equipment.
Q.23.
In a vehicle with dual parking control valves, a separate air tank can be used:
To make the air brakes work more effectively.
To temporarily release the spring brakes.
To charge the brakes on the rear trailer.
Q.24.
Broken suspension parts:
Are not a cause for concern.
Are extremely dangerous.
Cannot be identified.
Q.25.
If an aggressive driver confronts you, you should not:
Challenge them.
Ignore their gestures.
Avoid making eye contact.
Try to get out of their way.
Q.26.
If the safety relief valve in the air brake system releases air:
The compressor needs more air.
The air pressure has become too high.
The brakes are fully operational.
Q.27.
Most drivers are the least alert:
In the morning.
In cold weather.
At night.
After work.
Q.28.
Reading a text message while driving is:
Encouraged.
Allowed only if you are not pulling a trailer.
Illegal.
Q.29.
Before beginning downhill, you should:
Shift into a higher gear.
Take your vehicle out of gear.
Shift into a lower gear.
Rely only on braking to reduce your speed.
Q.30.
Cargo with a high center of gravity:
Can make a vehicle likely to tip over.
Is encouraged in inclement weather.
Is required on some roads.
Q.31.
To ensure that you do not slow down traffic when driving a large truck, you should:
Switch gears while driving uphill.
Try to pass another vehicle while driving uphill.
Stay in the right lane whenever possible.
Q.32.
If driving through flowing water or a large puddle, you should:
Increase your speed.
Gently apply the brakes.
Try to stop in the water.
Q.33.
If you are turning left and there are two available left turn lanes, which lane should you choose?
The left lane
The right lane
Either lane
Trucks should not turn where there are two left turn lanes.
Q.34.
To avoid becoming an aggressive driver, you should:
Plan trips without allocating extra time for traffic.
Tailgate.
Drive slowly in the left lane.
Not make gestures to other drivers.
Q.35.
Some air brake systems use alcohol:
To reduce the risk of ice forming in air brake valves.
To make the compressor run more efficiently.
To lubricate parts of the braking system.
To reduce the risk of rust forming on air brake valves.
Q.36.
What is the best way to stop if your brakes fail while you are driving downhill?
Steer onto an escape ramp.
Let the vehicle slow down on its own.
Let rumble strips slow your vehicle.
Q.37.
A safety valve is set to open at ____ pounds per square inch (psi).
100
150
200
Q.38.
When inspecting engine compartment belts during the vehicle inspection test:
The belts should be checked for snugness, each with up to three inches of play.
The water pump belt does not need to be identified.
The air compressor belt should be removed.
The applicant must identify which items are not belt-driven, if any.
Q.39.
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.40.
If a tire fails, the driver should:
Keep one hand on the steering wheel and use their other hand to wave to other drivers.
Stomp on the brakes.
Not use the brakes.
Accelerate.
Q.41.
When loading cargo, it is important to:
Stack items as high as possible.
Know the weight capacity rating of the suspension system.
Place light items underneath heavier items.
Q.42.
When stopping:
The brake pedal should be pressed down gradually.
The brake pedal should be pushed down quickly.
The brake pedal should be pressed down repeatedly, but not held down continuously.
The amount of force required on the brake pedal will be the same each time you slow or stop.
Q.43.
A driver who stops at a green light could be:
An impaired driver.
A driver who is color blind.
A person who does not know the rules of the road.
Q.44.
If your license to operate a personal vehicle is revoked or suspended:
You can get a hardship license to operate a CMV.
You cannot get a hardship license to operate a CMV.
Your CDL will not be affected.
Q.45.
What is often found in compressed air?
Water
Cardboard
Brake fluid
Q.46.
If confronted by an aggressive driver, you should:
Stay in their path.
Make eye contact with the driver.
Make gestures at the driver.
Report the driver.
Q.47.
If you’re not sure what to do to extinguish a fire in your vehicle, you should:
Use water.
Stay inside the vehicle.
Wait for the firefighters.
Q.48.
The front of an enclosed trailer should:
Be swept clean.
Contain rags.
Not be used for cargo.
Be free of cracks.
Q.49.
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.50.
The use of a hand-held mobile device while driving is:
Prohibited.
Acceptable if weather conditions are clear.
Permitted if use is work-related.
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