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Washington
Washington CDL Knowledge Test Class B 1
Answers
Q.1.
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.2.
When accelerating on a surface with poor traction, such as a wet road, a driver should:
Speed up quickly.
Speed up slowly.
Not be concerned about the pavement.
Q.3.
Convex mirrors:
Cannot be used on vehicles transporting hazardous materials.
Are illegal in most states.
Can help drivers see a larger area.
Q.4.
____ make up the emergency brake system.
Only parts of the parking brake system
Only parts of the service brake system
Parts of the parking and service brake systems
Q.5.
Failing to drain air tanks could result in:
Water accumulations freezing and causing brake failure.
Squishy brakes.
Too much air collecting in the tanks.
Q.6.
What is the maximum legal weight to be placed on a single axle?
20,000 pounds
34,000 pounds
80,000 pounds
Q.7.
If driving so slowly that you could impede other drivers, you should:
Drive in the left lane.
Drive while using your four-way flashers.
Drive without using any lights.
Q.8.
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.9.
What is brake lag?
The time required for the brakes to work after the brake pedal is pressed
The distance between the brake pedal and the floor
The amount of air pressure used to stop the vehicle
Q.10.
A truck tractor built after March 1, 1997 must be equipped with:
An Anti-Lock Braking System (ABS).
A flag.
Hydraulic brakes.
Q.11.
Black ice is:
Usually thick.
Usually thin.
Not a hazard when driving.
Q.12.
If your brakes fail on a downgrade, your best hope to stop is to:
Use an escape ramp.
Use the shoulder.
Drift to a stop.
Q.13.
While still below the legal limit, a driver operating a CMV with a detectable amount of alcohol in their system will:
Result in an out-of-service order for two hours.
Result in an out-of-service order for 10 hours.
Result in an out-of-service order for 24 hours.
Q.14.
Not using a safety belt while driving:
Is encouraged.
Is optional.
Is illegal.
Q.15.
The air storage tanks:
Hold only enough air for one braking cycle.
Hold enough air for the brakes to be used several times if the compressor stops working.
Do not hold air unless there is an emergency.
Q.16.
Braking mechanisms are located inside:
The fifth wheel.
A brake drum.
The landing gear.
Q.17.
Bracing is used to:
Make items stand taller in a trailer.
Prevent items from moving in a trailer.
Make it easier to unload items from a trailer.
Q.18.
A broken exhaust system:
Can allow poisonous fumes to enter the cabin.
Does not cause problems.
Should not be a concern.
Q.19.
ABS brakes:
Help you avoid wheel lockup.
Lock up your vehicle's wheels.
Prevent your vehicle from accelerating when going uphill.
Q.20.
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.21.
During the driving test, the examiner will be scoring you on:
Attitude.
How quickly you arrive to your destination.
Your general driving behavior.
Q.22.
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.23.
When exiting a vehicle, it is important to maintain ____ with your vehicle at all times.
Three points of contact
Four points of contact
Two points of contact
Q.24.
Before a trip, you should make sure that:
The brake pedal sticks.
The gas pedal is loose.
The grooved pedal surface has not been smoothed out.
Q.25.
When driving in fog, you should:
Slow down.
Speed up.
Drive on the shoulder.
Q.26.
Brake linings should be:
Loose.
Free of oil.
Soft.
Q.27.
When pulled over to the side of the road, you should:
Rely on your taillights to alert other motorists to your presence.
Not worry about other motorists.
Use your four-way emergency flashers to alert other motorists to your presence.
Q.28.
Blocking is used to:
Prevent cargo from shifting.
Prevent cargo from being loaded too high.
Prevent cargo from being unloaded too quickly.
Q.29.
A driver can rely on front wheel braking to work:
On dry roadways only.
Under all conditions.
Under all conditions, except for snow.
Q.30.
If a load is 40 feet long, it should be secured by at least ____ tie-downs.
Two
Three
Four
Q.31.
What is the legal length limit for double-trailer combinations?
34 feet
53 feet
61 feet
Q.32.
When trying to put out an electrical fire, you should:
Use water.
Use a B:C extinguisher.
Use an X extinguisher.
Q.33.
If the low air pressure warning signal comes on in a vehicle with air brakes, the driver should:
Test the brakes while driving, but continue driving if nothing seems wrong.
Immediately stop driving.
Drive with the hazard lights activated.
Q.34.
If you are driving at a reduced speed in a construction zone when you spot a construction worker near the road, you should:
Speed up.
Stay at your current speed.
Further reduce your speed.
Q.35.
When parked on a flat surface, you should:
Use wheel chocks to prevent your vehicle from moving.
Not use wheel chocks.
Use wheel chocks, but only if you have applied the parking brake.
Q.36.
Parked delivery trucks may be hazardous because:
The trucks are often shiny.
People are often in a hurry when exiting such trucks and may not look for other vehicles.
Packages often fall out of the trucks and into the road.
Q.37.
Rough acceleration:
Is a good way to stay awake on long trips.
Is distracting.
Can cause mechanical damage.
Q.38.
By beginning a left turn before reaching the center of an intersection, you:
Will likely complete the turn satisfactorily.
May hit other vehicles with the left side of your vehicle.
Can expect other drivers to move their vehicles to accommodate your turn.
Q.39.
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.40.
What helps prevent wheel lockup when braking?
An Anti-Lock Braking System (ABS)
Air brakes
An alternator
Q.41.
One way to prevent drowsiness while driving is to:
Drive alone.
Avoid regular exercise.
Get adequate sleep the night before the trip.
Q.42.
To stay alert while driving, you should:
Eat a heavy meal before beginning your trip.
Keep the cab warm.
Ride with a second person who can share driving responsibilities.
Q.43.
If the coolant temperature gauge goes above the highest safe temperature, you should:
Continue to drive.
Pull over and figure out what's wrong.
Run the air conditioner.
Q.44.
What is the Gross Vehicle Weight Rating (GVWR)?
The weight stated by the manufacturer as the loaded weight of a single vehicle
The maximum weight that can be pulled by a vehicle
The minimum weight that can be hauled by a vehicle
Q.45.
To use the controlled braking method, you should:
Lock your wheels while braking.
Apply your brakes as firmly as possible without locking the wheels.
Slightly tap the brakes.
Q.46.
During an applied leakage test, what is the maximum leakage rate that is safe for a single vehicle with air brakes?
10 psi in one minute
5 psi in one minute
3 psi in one minute
Q.47.
When braking with ABS, you should:
Pump the brake pedal.
Brake normally.
Brake harder than you would with a different braking system.
Q.48.
When parking, you should not use the parking brake if:
The brakes are very hot.
The brakes are very cold.
There is snow on the ground.
Q.49.
In a dual air brake system, air pressure should build from 85 to 100 psi within ____ seconds.
25
10
45
Q.50.
Who is responsible for the safe operation of a vehicle?
The driver
The mechanic
The owner
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