colorado
CDL Practice Test

Welcome to the Colorado CDL practice test site. Topics covered in these practice tests are designed to prepare you for the Colorado Department of Motor Vehicles CDL test. These tests are free and you are able to take tests as many times as you would like as you prepare to obtain your Colorado CDL. You will be presented with 40 questions and you must answer 34 questions correctly to pass. There is a 50-minute time limit. You may not go back once you answer a question. Click the "Start Test" button below to begin.

1 / 40

What are the liquid tight separations between compartments inside tanks called?

Bulkheads

Layers

Waffles

None of the answers listed

2 / 40

You should follow the posted speed limits for curves and be aware of:

The higher center of gravity on a tank truck.

The posted speed limit may be too high for safety.

A rollover may occur even when driving at the posted speed limit.

All answers listed.

3 / 40

You must first______to supply air to the trailer.

turn off the engine so you can hear the brakes

pull out the tractor protection valve

cross the air lines to check for the presence of leaks

push in the tractor protection valve

4 / 40

In safe driving, what does communicating mean?

using a cb radio to let others know your intentions

letting others know you are there by using turn signals, four way flashers, and horn

using hand signals

all of these answers are correct

5 / 40

When does your vehicle's single brake system need an adjustment?

if the compressor cuts out at between 70 and 90 psi

when the pressure builds from 85 to 100 psi in less than 1 minute

when the governor stops between 75-90 psi

if the pressure builds from 50 to 75 psi in less than 3 minutes

6 / 40

A safe haven is:

A place that has been approved to park unattended vehicles carrying explosives.

A place to stay once you have reported your company for illegal activity.

A place where it is safe to dump any kind of hazardous materials.

The slang term for the last stop at the end of your driving day when carrying hazardous materials.

7 / 40

"Outages" is the word to describe the amount of space required for liquids to expand in as they warm.

False, it's when the vehicle engine fails in some way

True

False, it's when the vehicle air braking system fails in some way

False, it's when the vehicle power system fails in some way

8 / 40

Operating a motor vehicle with the intent of doing harm to others or physically assaulting a driver or their vehicle is known as?

tailgating

defensive driving

aggressive driving

road rage

9 / 40

If you park the trailer at an angle to the tractor when uncoupling:

you won't have to take as many steps around the vehicle

damage could occur to the landing gear

the process will be faster and easier

you will have more space to maneuver in the lot

10 / 40

When accelerating:

"hammer down" when your wheels start to spin

speed up smoothly and gradually and avoid jerking

do not engage the clutch before you take your foot off the brake

always use the parking brake to slow down

11 / 40

Signs of distracted drivers include:

individuals driving at a consistent speed above the speed limit

drivers having conversations with passengers

individuals listening to music too loudly

vehicles exiting the roadway

12 / 40

A hazard class that uses transport indexes to determine the amount that can be loaded in a single vehicle is _____.

Class 7 radioactive materials

Class 1 explosives

Class 3 flammable liquids

Class 6 poisons

13 / 40

What should the driver pay special attention to when driving smaller tanks?

All answers listed.

The distrubition of weight.

The high center of gravity.

The level of the fluid.

14 / 40

When checking the wheelchair lift, the things you should look for are:

Leaking, damaged, or missing parts and that the lift is fully retracted and latched.

Bent or dinged lift floor.

Stripped screw drive linkages and fluid drips.

Leaking, damaged, or missing wheelchairs.

15 / 40

When should the trailer hand valve be used?

when driving at highway speeds

when parked in a service lot

all answers listed

to test the trailer brakes

16 / 40

The direction of liquid movement not prevented by baffles is:

Side to side.

Bottom to top.

None of the answers listed.

Back to front.

17 / 40

You need to raise the landing gear just to the height of where it clears the pavement before driving.

true

only in raining conditions

false

only in ideal conditions

18 / 40

The best way to have control on curves is:

to shift to a lower gear before entering the curve

you do not need to do anything different

keep pressure on the brake pedal through the turn

to decrease to your safe speed before entering the curve and then accelerate through it

19 / 40

Drivers placard their vehicle to _____ the risk.

communicate

take away

elevate

minimize

20 / 40

Select the answer that is not a part of the braking process when driving a tractor-trailer combination vehicle that has ABS:

you should brake in the same manner regardless of what you are driving

only use the braking that is necessary to safely stay in control of the vehicle

you should monitor the tractor and trailer as you decrease your speed to keep control

you should drive at a higher speed to keep the trailer in line

21 / 40

This object releases the fifth wheel locking jaw to allow uncoupling.

The locking pins

The release arm

The arm bar

The apron

22 / 40

The bus driver must accept responsibility for supervising and controlling students while on the bus route. Who is the person in charge?

The school district superintendent.

Bus driver.

Students on the bus.

Parents of the students on the bus.

23 / 40

Secure baggage and freight in ways that avoid damage and:

All of these answers are correct.

Allow riders to exit by any window or door in an emergency.

Protect riders from injury if carry-ons fall or shift.

Allow the driver to move freely and easily.

24 / 40

The most dangerous time during the school bus ride is:

When loading and unloading students.

On long bus journeys.

When the students become unruly on the bus.

Crossing railway crossing.

25 / 40

Which of the following statements about special danger of loading and unloading is true?

Students should be told to remain seated while the bus is in motion.

Students should be told to leave any dropped objects and move to the point of safety out of danger and get the driver's attention to retrieve the object.

Students should be told not to use the handrails when exiting the bus due to the possibility of causing a clothing hang up.

Students should be told to pick up any dropped objects as long as it is not under the bus.

26 / 40

What school bus accidents should be reported?

No accidents.

All accidents.

Only accidents casusing injury.

Only accidents determined to be the fault of the bus driver.

27 / 40

Within 3 minutes, this gauge pressure should build to 90 psi from 50 psi.

Voltmeter gauge

Air pressure gauge

Coolant pressure gauge

Oil pressure gauge

28 / 40

Select the correct setup for shut-off valves:

the rear shut-off valves are closed and the front trailer valves are open

the front and back shut-off valves are open

the front shut-off valves are closed and the rear trailer valves are open

the front and back shut-off valves are closed

29 / 40

If you are hauling hazardous materials and have ___ tires on your vehicle, you must stop and check them every time you park.

treaded

radial

bias

dual

30 / 40

What are some of the important parts in the steering system?

tie rod, spindle, pitman arm

rim, lug nuts, tire

main spring, axle, spring shackle

leaf spring, vehicle frame, torque rod

31 / 40

Cargo tanks are:

Filled while they are off your vehicle, then attached for transportation.

Bulk packaging temporarily attached to your vehicle.

Bulk packaging permanently attached to your vehicle.

Only made in one size.

32 / 40

You can be sure air is supplied to the second trailer by:

going to the rear of the second trailer and open the emergency line shut off

watch the air gauge for a drop of 30 psi

while driving at 10 mph apply the hand valve you should stop at the same in the same distance as a single trailer driving at 5 mph

you should get out and listen for air flowing through the lines

33 / 40

How far before a railroad crossing should you stop your bus?

100 feet exactly

50 to 75 feet

10 to 35 feet

15 to 50 feet

34 / 40

Why should you cover cargo?

all of these answers are correct

to protect individuals from any spilled cargo

to protect your cargo from bad weather

because many states require it

35 / 40

Students exit the bus and walk:

The distance it takes to clear the danger zone.

Across the street.

At least 10 feet away from the side of the bus.

At least 8 feet away from the side of the bus.

36 / 40

In column 1, the "D" symbol means:

Detonators

Domestic transportation

Devices

Domestic restrictions

37 / 40

The gauge that needs to come up to normal levels after starting the engine within a few seconds is _____.

oil temperature

air brake pressure

blood pressure

oil pressure

38 / 40

Select the true statement about what the Air Compressor Governor controls:

it controls when the air compressor pumps air into the storage tanks

it controls when air is released from the storage tank

it controls when the brakes will be applied

it controls when the warning system is activated

39 / 40

Select what you should not do when coupling the glad hands.

press the seals together at a 90 degree angle

make sure to match the colors or check the tags before connecting

clean the couplers before connecting them

cross the air supply lines to test for leaks

40 / 40

The act of operating a motor vehicle in a selfish, bold, or pushy manner, without regard for the rights or safety of others is known as.

distracted driving

aggressive driving

defensive driving

road rage

Your score is

The average score is 0%

5/5 - (1 vote)

CDL Category Practice Tests

CDL Practice Test

How To Get A colorado Commercial Drivers License

Colorado residents the age of 18 or older can apply for their commercial driver’s license. Those between the ages of 18 and 21 are restricted to intrastate driving. Individuals must be 21 years or older to receive their Hazmat, School Bus, or Doubles/Triples Endorsements. All applicants must possess a DOT medical card issued by a FMCSA certified medical examiner in order to be eligible for their CDL.

Any applicants that fall under the following conditions are automatically disqualified from receiving a CDL.

Having more than one driver’s license.
Being disqualified for commercial driving privileges in another state.
Being convicted in the past two years of driving a commercial vehicle impaired.
Having a suspended, canceled, denied, or revoked driver’s license.

All Colorado residents who are seeking to get their commercial driver’s license must pass both one or more knowledge tests as well as a practical skills test.

Endorsements
T – Double And Triple Trailers
N – Tanker Vehicles
P – Passenger
S – School Bus
H – Hazardous Materials
X – Tanker With Hazmat

Hit the Open Road

colorado CDL License Test Tips

All applicants are required to take one or more knowledge tests to display their comprehension of the commercial driving law. Class A, B, and C applicants must complete a 50 question assessment. Class A applicants are responsible for completing an additional 20 questions all based on the subject of combination driving. Applicants seeking endorsements will be required to complete a knowledge test specific to the endorsement sought. The endorsement tests range between 20 and 30 questions. All applicants must receive a score of 80 percent or higher to pass a knowledge test.Applicants for a Colorado CDL must complete a skills test is order to receive their CDL. The skills assessment is comprised of an on-road test, vehicle inspection, and basic controls skills test. Applicants who are applying for endorsements are required to complete the skills test with the type of vehicle the endorsement is intended for.

Additional Information

Information on the Colorado Division of Motor Vehicles

The State of Colorado Department of Revenue Division of Motor Vehicles regulates the CDL requirements and testing in Colorado. To get more information contact them via:

Website: https://www.colorado.gov/pacific/dmv/im-commercial-driver

Phone: 303.205.5600

Additional Colorado CDL Helpful Links

Please use the links below to access more valuable Colorado CDL testing resources and to learn more about practice driving tests for the state of Colorado.

colorado CDL Practice Test