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Driving Test
District of Columbia
District of Columbia CDL Knowledge Test Class A 1
Answers
Q.1.
When driving, keeping space between your vehicle and other vehicles is:
Not important.
Important.
A waste of time.
Optional.
Q.2.
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.3.
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
The weight of the air within a fully inflated tire
Q.4.
When checking the air and electrical lines during a vehicle inspection, all of the following should be true, except:
The air hoses are making a hissing noise.
The air hoses and electrical lines are not cut.
The air lines are not pinched.
The air lines are not dragging against tractor parts.
Q.5.
What are placards?
Signs placed on a vehicle to identify cargo hazards
A type of tire used in snowy conditions
Logs kept inside the vehicle
Journals for mileage
Q.6.
When conducting a vehicle inspection, you will need to identify all of the following, except:
The power steering belt.
The water pump belt.
The alternator belt.
The water compressor belt.
Q.7.
After a vehicle is started, warning lights and buzzers:
Should stay on for several minutes.
Should turn off within a few seconds.
Should stay on until manually turned off.
Should remain on.
Q.8.
Emergency equipment, such as a fire extinguisher, is:
Only needed for vehicles transporting hazardous materials.
Only needed for interstate travel.
Required.
Only required when transporting passengers.
Q.9.
When performing a pre-trip inspection, you should make sure that:
The pedal surface has been smoothed out.
The gas pedal sticks.
Nothing is obstrucing the pedals.
There is something underneath the brake pedal.
Q.10.
If your vehicle is equipped with a cargo lift, you should ensure that:
The lift is loosely attached.
The lift is not leaking.
The lift is fully extended.
The lift is the proper color.
Q.11.
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.12.
Test the low pressure warning signal:
Once a month.
Once a week.
Twice a week.
Before every trip.
Q.13.
If a tire fails, you should:
Loosen your grip on the steering wheel.
Immediately apply the brakes.
Check your tires after coming to a complete stop.
Turn sharply off the road.
Q.14.
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.15.
When driving, it is important to:
Keep your attention focused in front of your vehicle.
Look only to the front and right side of your vehicle.
Look only to the front and sides of your vehicle.
Look to the front, sides, and rear of your vehicle.
Q.16.
If hydraulic brakes fail, a driver can reduce their speed by:
Shifting into a higher gear.
Shifting into a lower gear.
Finding a hill.
Letting the truck run out of gas.
Q.17.
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.18.
Brake fade is a result of:
Exposure to sunlight.
Exposure to moisture.
Excessive use.
Not using the brakes enough.
Q.19.
A driver should always:
Stay in the right lane.
Have an emergency plan.
Stay in the left lane.
Drive faster than the posted speed limit.
Q.20.
When carrying a wide load, you should:
Drive as fast as possible.
Obtain special permits and follow special rules, such as driving during certain hours.
Honk at other drivers to get them to move from the lane closest to you.
Drive on the shoulder.
Q.21.
Over-the-counter medication:
Poses no safety risks to a driver.
Is not referenced by any laws regarding driving under the influence.
Cannot impair a driver.
Can affect a person’s ability to drive safely.
Q.22.
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.23.
If involved in a crash, basic procedures should include all of the following, except:
Protecting the area.
Notifying the proper authorities.
Caring for the injured.
Driving away without stopping.
Q.24.
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.25.
A vehicle inspection is required:
For insurance purposes.
To get fuel.
By state and federal law.
Q.26.
To receive a hazardous materials endorsement, an applicant will be required to supply:
Their fingerprints.
Their shoe size.
A list of countries visited within the last 10 years.
Their employment history for the previous five years.
Q.27.
Antifreeze helps to keep an engine functioning properly:
But only in cold weather.
But only in hot weather.
Regardless of the weather.
While minimizing the vehicle's fuel use.
Q.28.
If you are being tailgated, you should:
Drive on the shoulder.
Pull off the roadway.
Drive faster.
Allow the vehicle to pass.
Q.29.
If cargo on a flatbed trailer is 40 feet long, it must be secured by a minimum of:
One tie-down.
Two tie-downs.
Three tie-downs.
Four tie-downs.
Q.30.
When driving through a curve during the skills test, you should:
Veer from your lane if needed to complete the curve.
Reduce your speed after entering the curve.
Refrain from looking for other vehicles while turning.
Reduce your speed before entering the curve.
Q.31.
Which of the following may result in an applicant being denied a hazardous materials endorsement?
They are not a lawful permanent resident of the United States.
They have had a speeding conviction within the previous three years.
They did not correctly answer every question on the written hazardous materials endorsement test.
They did not pass the written hazardous materials endorsement test on the first attempt.
Q.32.
Escape ramps are:
Ramps to exit the interstate quickly.
Ramps connecting four-lane highways and two-lane highways.
Ramps that can be used by stop runaway vehicles on steep downhills.
Ramps that cannot be used by automobiles.
Q.33.
Before a vehicle with dual air brakes is driven, pressure of at least ____ should be built up in both braking systems.
10 psi
25 psi
50 psi
100 psi
Q.34.
Once stopped as part of the stop/start maneuver, you should:
Apply the parking brake.
Keep the vehicle in first gear.
Be perpendicular to the curb.
Be blocking a driveway.
Q.35.
Stopping distance can be affected by:
Speed.
Engine oil.
Time of day.
Traffic.
Q.36.
Which of the following is a good rule to follow when making a turn?
Honk your horn.
Use your arms to get the attention of other drivers.
Turn off your turn signal before entering the turn to avoid confusing other drivers.
Signal early.
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.
If you’re feeling tired before a drive, you should:
Drink coffee.
Take caffeine pills.
Not drive.
Drive as fast as possible so you get to the destination quickly.
Q.39.
When approaching a downgrade, how can you reduce the amount of braking that will be needed?
Switch to a higher gear.
Switch to a lower gear.
Switch to neutral.
Turn off the engine.
Q.40.
Why are roads especially slippery right after it begins to rain?
The water mixes with oil and grease on the road.
Roads are naturally slippery.
Gravel often gets washed to the middle of the lane.
Tires are not usually designed to drive in rain.
Q.41.
Emergency brakes are:
Not required on trucks.
Only required on trailers.
Required on tractors.
Only required when transporting hazardous materials.
Q.42.
It is illegal to operate a CMV with a minimum blood alcohol content (BAC) of:
0.01 percent.
0.02 percent.
0.04 percent.
0.08 percent.
Q.43.
Distracted driving:
Always comes as a result of physical distraction, not mental distraction.
Can be elevated by pre-programming radio stations.
Can be avoided by eating while driving.
Can be avoided by not engaging in complex conversations while driving.
Q.44.
When traveling with cargo, the cargo should be checked:
Only before the trip.
Before the trip and after the first 50 miles.
Only by loading personnel.
Only after arriving to the final destination.
Q.45.
When performing the stop/start maneuver as a part of the skills test, you should:
Cut off other vehicles if needed to get onto the shoulder.
Not use any turn signals.
Slam on the brakes to stop as quickly as possible.
Decelerate smoothly.
Q.46.
Overloading cargo can have negative effects on all of the following, except:
Steering.
Braking.
Speed control.
The electrical system.
Q.47.
A truck may need to be under the legal maximum weight limit when being driven:
On a flat road.
On a mountainous road.
In heavy traffic.
At night.
Q.48.
A serious traffic violation involves each of the following offenses, except:
Excessive speeding.
Littering.
Reckless driving.
Following too closely.
Q.49.
Mirrors should be adjusted:
While moving.
When the trailers are straight.
When you are standing next to the vehicle.
By an assistant.
Q.50.
When inspecting the exhaust system, which of the following should not cause concern?
Loose or broken exhaust pipes
Loose or broken mounting brackets
Leaking exhaust system parts
Exhaust system parts that are not rubbing against fuel system parts
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