Protect the driver from being hit by cargo.

Protect the driver's head when entering the cab of a truck.

Two licenses, one for automobiles and one for trucks.

A license for each state in which they plan to drive.

An automobile license from one state and a CDL from another.

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

Q.1

When using mirrors while driving, you should:

Look in the mirrors quickly.
Look in the mirrors for extended periods of time.
Use only the rearview mirror.
Use only the driver’s side mirror.

Q.2

Eating while driving:

Is a good way to maximize time.
Is encouraged on long trips.
Creates a distraction for the driver.
Is mandatory so cargo is not left unsupervised.

Q.3

If the spring brakes are activated, you should never:

Push down the brake pedal.
Open the hood.
Release air from the air storage tanks.
Open the door to the cab.

Q.4

Fuel records supporting IFTA quarterly fuel use tax returns must be kept by carriers for:

One year.
Two years.
Three years.
Four years.

Q.5

When driving in fog, you should:

Use the windshield wipers.
Use low beam headlights.
Use high beam headlights.
Use the air conditioning.

Q.6

The steering wheel should be:

Held with both hands.
Held by one hand to allow for other tasks, such as eating and drinking.
Held by one hand at a time, alternating between hands.
Cracked to allow for an improved grip.

Q.7

When driving in heavy traffic, you should:

Use hands-free cellular devices.
Use your cell phone for texting instead of calling.
Not use your cell phone.
Turn up the ringer on your cell phone.

Q.8

While operating a CMV:

You are not required to wear a safety belt.
You are only required to wear a safety belt if your vehicle does not have airbags.
You are required to wear a safety belt, but only if hauling more than 1,000 pounds of cargo.
You are always required to wear a safety belt.

Q.9

If something is found to be unsafe during a pre-trip inspection, you should:

Continue with the trip and make an appointment with a mechanic after the trip is completed.
Let a more experienced driver use the truck.
Get the issue fixed immediately.
Not use the items found to be unsafe, but may continue driving normally.

Q.10

When traveling with cargo, you must make sure the cargo is secure:

No more than two times.
Every 150 miles or three hours of driving.
Only after traveling up a hill.
Only after coming to a hard stop.

Q.11

If a tire rim is damaged, it should be:

Left on the vehicle.
Welded to repair the damage.
Replaced.
Put on the axle farthest from the driver.

Q.12

An open automobile window in cold weather may indicate that the driver is:

Driving impaired.
Inappropriately dressed.
Using the heat inside their vehicle.
Enjoying the fresh air.

Q.13

If the brake pads rub against the brake drums and create too much heat:

The brakes will stick.
The brakes will become extra sensitive.
The brakes may stop working.
The air compressor will kick on to cool the brakes.

Q.14

Dry bulk tanks require special care because:

They have low centers of gravity.
They have high centers of gravity.
Loads are usually stable.
They are usually overloaded.

Q.15

If driving a school bus, your four-way flashers should:

Be activated before crossing railroad tracks.
Never be used.
Only be used after crossing railroad tracks.
Only be used near railroad tracks if a train is approaching.

Q.16

Header boards:

Should never be used.
Protect the driver from being hit by cargo.
Protect the driver's head when entering the cab of a truck.
Provide extra storage.

Q.17

If a vehicle gets stuck on a railroad track, the driver should:

Stay in the vehicle and try to restart the vehicle.
Get out of the vehicle and walk away from the tracks.
Try to flag down another vehicle to give them a push.
Wait in the vehicle for a law enforcement officer to arrive.

Q.18

When taking the on-road driving test, you will be evaluated on your lane usage. Which of the following is an example of poor lane usage?

Not driving over curbs or sidewalks
Stopping behind crosswalks
Driving in the leftmost lane if more than one driving lane is available
Finishing a right turn in the rightmost lane

Q.19

What may happen if the exhaust system is not working properly?

Poisonous fumes may enter the cab.
Poisonous fumes may exit the rear of the muffler system.
It may prevent proper steering.
It may cause problems if the trailer is fully loaded.

Q.20

Front brake limiting valves were intended to:

Prevent the front tires from skidding.
Prevent the front tires from overheating.
Create equal brake usage.
Remove uncertainty when applying the brakes.

Q.21

When a tire goes flat, you may hear a loud bang. The truck will be affected:

Immediately.
After a short delay.
Only if the damaged tire is near the front of the truck.
Only if the truck is hauling a load.

Q.22

What is Gross Vehicle Weight (GVW)?

The total weight of a vehicle and its load
The total weight of a vehicle's tractor
The total weight of a loaded trailer
The weight of a tractor and trailer, before adding in the load

Q.23

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.24

An item that is 40 feet long placed on a flatbed trailer should be secured by at least ____ tie-down(s).

One
Two
Three
Four

Q.25

Cargo on flatbed trailers should be:

Tied down.
Glued down.
Left loose.
Pushed to one side.

Q.26

When checking the engine compartment:

The parking brake should not be engaged.
Wheels should be chocked.
The engine should be running.
The gearshift should be in first gear.

Q.27

A driver can have:

Two licenses, one for automobiles and one for trucks.
Only one license.
A license for each state in which they plan to drive.
An automobile license from one state and a CDL from another.

Q.28

If a vehicle has a vehicle inspection report, the driver:

Should not look at the report and instead try to find any issues themselves.
Should take the vehicle to a mechanic.
Should review the report.
Should not conduct a pre-trip inspection and rely only on the report.

Q.29

Why should the steps of a pre-trip inspection be done in the same order each time?

You will be less likely to forget a step.
You will get faster.
It is required by law.
The form must be followed in order.

Q.30

When taking the on-road driving test, you must do all of the following, except:

Wear your safety belt.
Obey all traffic signs.
Complete the test without an accident.
Demonstrate that you can use your cell phone while driving.

Q.31

Most heavy vehicles require ____ to change gears.

Double clutching
Double shifting
Triple clutching
Triple shifting

Q.32

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.33

If using air tanks with manually operated drains, how often should you drain the tanks?

Every day
Once a week
Once a month
Once every 3,000 miles

Q.34

If federal inspectors judge your vehicle to be unsafe, they can:

Bring you to a garage to have your vehicle fixed.
Formerly request that you have your vehicle's problems fixed.
Call a mechanic.
Pull the vehicle out-of-service until it is fixed.

Q.35

If a person operates in both excepted and non-excepted intrastate commerce, which type of license should the driver select?

Either excepted or non-excepted
Excepted
Non-excepted
Traditional

Q.36

Foundation brakes are used:

Only at the front wheels.
Only at the rear wheels.
Only at the driver’s side wheels.
At each wheel.

Q.37

The air storage tanks:

Hold only enough air for one braking cycle.
Hold enough air for brakes to be used several times if the compressor stops working.
Do not hold air unless there is an emergency.
Hold enough air for more than 1,000 braking cycles.

Q.38

You should cover cargo:

To protect the cargo from thieves.
To protect the cargo from weather.
To prevent other drivers from looking at what is being transported.
To keep the cargo a secret.

Q.39

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.40

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.41

What can happen if your vehicle has a high center of gravity?

It may get better mileage.
It may be difficult for you to see the road.
It may tip over.
The tires may not be able to handle the weight.

Q.42

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.43

Which type of brakes do most heavy-duty vehicles have?

Air brakes
Solid brakes
Liquid brakes
Gravity brakes

Q.44

When carrying a wide load, you should:

Drive as fast as possible.
Obtain special permits and follow special rules.
Honk at other drivers to get them to move from the lane closest to you.
Drive on the shoulder.

Q.45

When using road speed to know when to switch gears, you should:

Learn what speeds each gear is good for and shift up when necessary.
Watch other vehicles and try to keep pace.
Watch other trucks and shift when they shift.
Use the speed limit as a guide.

Q.46

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.47

If the low pressure warning light comes on while you are driving:

Braking will only occur if there is enough air in the tanks.
You can brake 14 times before the air in the system runs out.
You should continue to drive normally and check the brake system when it is convenient.
You should continue driving, but turn the emergency flashers on to warn other motorists.

Q.48

States verify that a CDL or CLP driver has only one such license by:

Making phone calls to surrounding states.
Using a computerized system that links all states.
Asking the driver.
Looking through the driver's wallet.

Q.49

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 about how the weight is distributed.
Only place weight over the axles.

Q.50

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.