An engine can be destroyed quickly.

A vehicle will get better gas mileage.

An Anti-Lock Braking System (ABS) won’t work properly.

Have heaters to prevent them from freezing.

Wyoming CDL Knowledge Test Class B 1 - DMV Written Test Questions with Answers

Q.1

Which of the following is acceptable if found during a pre-trip inspection?

Tires of mismatched sizes
Tread of 3/32 of an inch in the grooves of the front tires
Tires manufactured by different makers

Q.2

Without engine oil:

A vehicle will get better gas mileage.
An engine can be destroyed quickly.
An Anti-Lock Braking System (ABS) won’t work properly.

Q.3

A cargo van carrying a light load is usually:

The same height as when carrying a heavy load.
Taller than when carrying a heavy load.
Shorter than when carrying a heavy load.
Less stable than when carrying a heavier load.

Q.4

Stopping distance can be affected by:

Speed.
Sunshine.
Time of day.
Traffic.

Q.5

When nearing a construction worker who is close to the road, you should:

Increase your speed.
Decrease your speed.
Not drive in any lane.
Wait until the construction is complete before proceeding.

Q.6

As part of the vehicle inspection test, a CDL applicant may be asked to:

Check the engine oil level.
Replace a tire.
Remove the alternator belt.
Replace spark plugs.

Q.7

How can you prevent drowsiness before a trip?

Get about four hours of sleep.
Plan stopping points into your trip in advance.
Drive alone.
Schedule long trips at night.

Q.8

When using your mirrors, you should frequently look at your tires to:

Watch for tire fires.
See if the tires are rolling properly.
See if the tread is sufficient.
Get a sense of the size of the tire in relation to other vehicles.

Q.9

When leaving your vehicle, you should:

Apply the parking brake.
Apply the air brakes.
Not apply any brake.
Disconnect the trailer.

Q.10

An Anti-Lock Braking System (ABS) will:

Allow you to drive faster than you would be able to otherwise.
Allow you to follow other vehicles more closely than you would be able to otherwise.
Allow you to drive less carefully than you would be able to otherwise.
Not decrease your stopping distance.

Q.11

When inspecting the engine compartment, you should not:

Check the engine oil level.
Check the coolant level in the radiator.
Drain the brake fluid.
Check the windshield washer fluid level.

Q.12

An underloaded front axle:

Is important for smooth steering.
Is encouraged as front axles are usually less strong than other axles.
Is discouraged as it can cause steering problems.
Is discouraged as it can improve fuel efficiency.

Q.13

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.14

If pulled over on the side of the road, you should:

Use the taillights to alert other motorists.
Turn on your four-way flashers.
Keep your lights off to avoid distracting other drivers.
Set out items from the cab to warn motorists.

Q.15

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.16

When steering to avoid a crash, you should:

Only use one hand to steer.
Keep both hands on the steering wheel.
Not use your mirrors to check other lanes.
Speed up as you get nearer to the hazard.

Q.17

If an aggressive driver is involved in a crash on the road ahead, you should:

Stop and confront the driver.
Stop a safe distance from the crash scene, wait for police to arrive, and tell them of the driver's behavior.
Block the driver in with your vehicle.

Q.18

When taking the basic control skills test, drivers are:

Not permitted to stop and exit the vehicle to look at the vehicle’s position.
Encouraged not to exit the vehicle to look at the vehicle’s position.
Allowed to leave the vehicle, but only if the vehicle is placed in reverse.
Allowed to leave the vehicle, but only if the vehicle is placed in neutral and the parking brake is set.

Q.19

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.20

When loading a trailer, it is important to:

Place as little weight as possible over the axles.
Place an appropriate amount of weight over the axles.
Not be concerned with how the cargo's weight is distributed.

Q.21

When an S-cam turns inside a brake drum, the S-cam:

Presses the brake shoes against the inside of the brake drum.
Presses the brake shoes against the brake linings.
Presses the brake linings against the wheel axles.

Q.22

After a vehicle is started, the engine oil pressure should come up to normal:

Within seconds.
Within five minutes.
Within three minutes.
After five minutes.

Q.23

If making a tight turn, the operator of a CMV should:

Be able to drive as fast as the driver of a car.
Not be concerned about speed, but focus on the road.
Warn drivers behind by braking early and slowing gradually.

Q.24

If a vehicle has a vehicle inspection report from the previous driver:

The driver should not conduct a pre-trip inspection and rely on the report.
The driver should take the vehicle to a mechanic.
The driver should review the report.
The driver should speak with the previous driver.

Q.25

If an Anti-Lock Braking System (ABS) is equipped on a trailer but not on a tractor:

The truck should not be driven because ABS needs to be on both the tractor and trailer.
The truck should be driven more slowly than usual.
The tractor should not be used and a new tractor with ABS should be located.
The tractor and trailer can still be used together.

Q.26

When inspecting the windshield before a trip, a person should do all the following, except:

Remove and sharpen the wiper blades.
Check the windshield wipers for proper spring tension.
Check the wiper blades for damage.

Q.27

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.28

Which of the following is not a sign of fatigue?

Difficulty focusing, with frequent blinking
Yawning repeatedly or rubbing eyes
Staying in your lane

Q.29

After two violations of any state law regarding hand-held mobile phone use:

You will need to cancel your mobile phone service.
Your CDL will be disqualified.
You will be required to drive 10 mph under the posted speed limit for a period of time.

Q.30

Compared to talking on a cell phone while driving, texting while driving is:

Much safer.
Just as safe.
More dangerous.

Q.31

If you see taillights ahead while you are driving in fog:

The lights may not indicate where the road is as the vehicle may have pulled off the roadway.
You can assume the vehicle ahead is on the road.
It may be an optical illusion.

Q.32

Antifreeze helps to keep an engine functioning properly:

But only if it is cold outside.
To be more fuel efficient.
Both when it is cold and hot outside.

Q.33

During a basic vehicle control skills test, a look is when:

A driver checks the gauges on their instrument panel.
A driver checks their blind spots.
A driver walks to the back of their vehicle to check its position.

Q.34

Bridges usually:

Do not freeze.
Have heaters to prevent them from freezing.
Freeze before other surfaces.

Q.35

A burning tire should be:

Cooled with water.
Fanned with a blanket.
Cut up with an axe.
Covered with a tarp.

Q.36

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.37

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.38

A vehicle stopped at a green light may indicate that the driver:

Is impaired.
Is colorblind.
Does not know the rules of the road.
Is very patient.

Q.39

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.40

A liver can process about ____ per hour.

One alcoholic drink
Two alcoholic drinks
Three alcoholic drinks

Q.41

Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when:

Air pressure falls below 45 psi.
Air pressure falls below 20 psi.
Driving downhill.
Driving uphill.

Q.42

Which of the following is not a reason to cover cargo?

To protect people from spilled cargo
To protect the cargo from weather
To protect the cargo from animals

Q.43

If you must back up, it is helpful to:

Drive as fast as possible to complete the maneuver quickly.
First walk the line of travel to look for obstacles.
Use only the passenger side mirror.

Q.44

Who may operate a vehicle that requires placards to be driven?

Any driver with a CDL
A driver with a hazardous materials endorsement
A driver with a minimum of 10 years of commercial driving experience
Any person who thinks they can

Q.45

Air tanks usually hold enough compressed air:

For one stop before needing to be refilled.
For several stops before needing to be refilled.
For a day’s worth of braking.
For an unlimited number of stops.

Q.46

If unable to tell if the road is becoming icy and slippery, a driver:

Should try guessing.
May open their window and feel the front of the side mirror for ice.
Should look at the road closely.

Q.47

When leaving a vehicle unattended, a driver should:

Always set the parking brake.
Only set the parking brake if the vehicle is parked on a slope.
Deflate the tires by 10 percent.

Q.48

Mirrors should be adjusted:

While moving.
When the trailers are straight.
When you are standing next to the vehicle.
By an assistant.

Q.49

In very hot weather, tires should be checked regularly because:

They may melt.
Air pressure may increase with the temperature.
The tread wears down more quickly than in cooler weather.

Q.50

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.