nebraska
CDL Practice Test

Prepare for your Nebraska CDL test here. You can take these Nebraska CDL practice test as many times you would like as you get ready to take the official test and earn your license. The best part? All of the tests on this site are 100% free. 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

This should be cleaned and then adjusted properly while inside the cab.

The mirrors

The headlights

The windshield

The lug bolts

2 / 40

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

only in raining conditions

true

only in ideal conditions

false

3 / 40

Select the true statement in regards to as why you should make sure the fifth wheel plate is greased as recommended:

To prevent any steering problems.

To make sure that uncoupling easier.

To make sure the electrical connections are good.

To decease heat and noise.

4 / 40

Select the true statement in regards to a converter dolly:

it is a coupling device with only two axles and a sixth wheel to which a semitrailer can be coupled to the rear of a tractor-trailer combination forming a double bottom rig

it is a coupling device with one or two axles and a fifth wheel with which a semitrailer can be coupled to the rear of a tractor-trailer combination forming a double bottom rig

it is a connecting device consisting of one axle which disconnects a semitrailer combination vehicle converting it into two separate trailers

none of the answers listed

5 / 40

The front trailer supports should be____before driving away.

raised fully and the crank handle secured in its bracket

raised 1/2 way with the crank handle secured in its bracket

raised 1/3 of the way with the crank handle secured in its bracket

3 turns down from the top and the crank handle secured in its bracket

6 / 40

Which of the following factors is NOT used to determine your safe speed when going down a long steep downgrade?

total weight of the vehicle and cargo

time of day

length and steepness of grade

weather

7 / 40

What should you hear when you test the trailer brakes by opening the service air line at rear of trailer with the hand valve on?

you should hear air escape from the open valve

none of the answers listed

the emergency air line will release air

the service brakes will move to a fully applied position

8 / 40

Which of the following statements about bus evacuation is true?

If time allows, backup to the stop before evacuating the bus.

If time allows, notify the police.

If time allows, notify the dispatcher about evacuation location, conditions, and type of assistance needed.

If time allows, walk through the bus and close all windows.

9 / 40

Your rig should be parked on__to uncouple double trailers.

level ground

the company's lot

a downgrade

grass

10 / 40

When inspecting the ______you are making sure that the lines and hoses are not chafed, cut, pinched, or dragged against tractor parts.

lifts/door/ties

electric/air lines

air brake lines

mud flaps

11 / 40

What placards, if any, do you need if your load includes 20 pounds of Division 2.3 gas and 1,001 pounds of flammable gas?

None, you cannot load these materials together.

Poison 23 and dangerous.

Poison 23 and flammable gas 21.

Just dangerous placards are required.

12 / 40

The bolst, brackets, or bushings that attach the air bag and/or spring to the vehicle and axle frame are _____.

shock dampeners

lug bolt

none of the answers listed

spring mounts

13 / 40

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

Stripped screw drive linkages and fluid drips.

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

Bent or dinged lift floor.

Leaking, damaged, or missing wheelchairs.

14 / 40

What color are all school buses painted?

The individual district decides the exact color.

Florescent yellow.

Orange yellow.

National school bus yellow.

15 / 40

At around____the governor allows the air compressor to start pumping again:

225 psi

125 psi

175 psi

100 psi

16 / 40

While completing the 2nd component of the air brake check you are required to turn the electrical power on, begin fanning off the air pressure by rapidly relasing and apply the foot brake and _____.

a low air warning device should sound before the air pressure drops below 60 psi

none of the answers listed

a low air warning device should sound before the air pressure drops below 40 psi

the tractor protection valve and parking brake valve should pop out before air pressure falls below 60 psi for combination vehicles

17 / 40

Select the true statement about empty trucks:

they have a smaller stopping distance than full trailers

empty trucks stop in the same distance as a fully loaded truck

empty trailers are easier to stop because there is not cargo shifting

they have poor traction due to wheel lockup and bouncing

18 / 40

The minimum tire tread depth for front tires is:

3/8-inch

1/32-inch

1/2-inch

4/32-inch

19 / 40

Which of the following is a recommended procedure when unloading the students?

Put the transmission in neutral gear and put on the brakes.

Tell students to remain seated until they are told to exit.

Let the students begin moving to the front of the bus before it's fully stopped to maximize efficiency.

Position yourself outside of the bus in front of crossover mirror to supervise unloading.

20 / 40

Why is the proper adjustment and use of all mirrors so vital to the safe operation of the school bus?

In order to observe the danger zones around the bus and look for the students, traffic, and other objects in this area.

In order to observe the danger zones around the bus.

In order to see if small vehicles are driving in the bus blind spots.

In order to clear up blind spots around the bus.

21 / 40

If your engine runs a pump used during delivery of compressed gas, should you turn off the engine before or after unhooking hoses after delivery?

None of these answers are correct.

Turn it off during product transfer, while unhooking the hose.

Turn it off before product transfer, before you hook the hose.

Turn it off after product transfer, before you unhook the hose.

22 / 40

What is the main difference between a portable tank and a cargo tank?

Cargo tanks are filled while on the vehicle, portable tanks are filled while off the vehicle.

Portable tanks must additionally show the owner or lessee's name on them.

All of these answers are correct.

Cargo tanks are permanently attached, portable tanks are temporarily attached.

23 / 40

In the event of an accident you should remember to do the following EXCEPT:

move the victims out of the way immediately

stop any bleeding and keep the victims warm

protect the area

notify authorities

24 / 40

What is the purpose of the supply pressure gauge?

to inform you of how much air is in the tank

to inform you about how hot the air in the tank is

all of these answers are correct

to inform you if there is too little air in the tank

25 / 40

The object that doesn't get checked at the side of the trailer is the:

The locking pins/tandem release arm

The landing gear

The frame

Electrical/air connections

26 / 40

Make sure that____when the front trailer supports are up and the trailer is resting on the tractor.

the safety latch is in the open position

the kingpin has been removed

there is enough clearance between the landing gear and the tractor frame

there is enough clearance between the lower and upper fifth wheel

27 / 40

In what position should the shut off valves on a the rear of the front trailer be in on a set of double trailers?

in an open position

in a closed position

in a 1/3 way open position

in a halfway open position

28 / 40

While completing the 1st component of the air brake check you are required to fully push down on the foot brake and _____.

see if the air pressure drops more than 4 lbs in a minute while holding it down for a full minute in a combination vehicle

none of the answers listed

see if the air pressure drops more than 3 lbs in a minute while holding it down for that full minute in a single vehicle

both of the answers listed

29 / 40

A driver of a tanker should use an escape ramp when _____.

when the tanks has bulkheads

only when it's raining

only in ideal conditions

the vehicle has lost braking power

30 / 40

What kind of surge can occur in a tank with baffles?

Side to side

Bottom to top

All answers listed

Back to front

31 / 40

What keeps air in the tanks should the air compressor develop a leak?

the one-way check vavle

the engine protection valve

the air compressor

the tractor relay valve

32 / 40

The interlock system for the brake and accelerator on a transit coach may be used:

To replace the rear door emergency buzzer.

As a safety feature when the exit door is open.

All of these answers are correct.

To replace the parking brake.

33 / 40

Which of the following are possible causes of tire fires?

loose fuel connections or under-inflated tires

poor cargo ventilation or short circuits

dual tires that touch and under-inflated tires

improperly loaded cargo and dual tires that touch

34 / 40

How do you supply air to the trailer tanks?

by pulling out the trailer air supply valve

by connecting the service line glad hand

by connecting the red and blue lines

by pushing in the trailer air supply valve

35 / 40

What might happen if you swing wide to the left before you turn right?

all of these answers are correct

someone might try to pass you on your right

you might damage your leaf springs

someone might try to pass you on your left

36 / 40

Which of the following types of cargo must never be carried on a bus with passengers?

Emergency drug shipments

Small arms ammunition (orm-d)

Tear gas

Emergency hospital supplies

37 / 40

The method used to make sure the spring brakes will come on automatically is to:

Apply pressure on and off the brake pedal to decrease the air tank pressure. The parking brake knob should pop out when the air pressure drops to 120 psi.

Apply pressure on and off the brake pedal to increase the air tank pressure. The parking brake knob should pop out when the air pressure meets to the manufacturer’s specification.

Apply pressure on and off the brake pedal to decrease the air tank pressure while driving at a high a speed. The parking brake knob should pop out when the air pressure meets to the manufacturer’s specification.

Apply pressure on and off the brake pedal to decrease the air tank pressure. The parking brake knob should pop out when the air pressure meets to the manufacturer’s specification.

38 / 40

To decide which placards you need, if any, what three things do you need to know?

Packing group numbers, amount being shipped, and amount of all hazardous materials of all classes on your vehicle.

Materials hazard class, amount being shipped, and amount of all hazardous materials of all classes on your vehicle.

Materials hazard class, percentage of total volume, and amount of all hazardous materials on your vehicle.

Materials hazard class, location being shipped, and amount of all hazardous materials on your vehicle.

39 / 40

A placard is required for a combustible liquid at?

Any amount

100 gallons

1,001 pounds or more

110 gallons

40 / 40

How do you release the dolly brakes when coupling twin trailers?

by opening the shut off valve

by charging the air line

by opening the air tank petcock

by flushing the brake line

Your score is

The average score is 0%

5/5 - (2 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get A nebraska Commercial Drivers License

To be eligible for a CDL in Nebraska, applicants must be a minimum of 18 years old to operate a commercial vehicle within the borders of Nebraska and 21 to drive outside of Nebraska.

Applicants must provide verification that they meet the medical requirements. Applicants must complete (Form MCSA-5876) Medical Examiner’s Certificate with an FCSA-approved physician. The document must be completed in its entirety and submitted to the Nebraska Department of Motor Vehicles via mail, fax or e-mail.

There are also restrictions on who is able to earn a CDL in Nebraska based on their past driving record as well. Potential CDL applicants who have had their licenses revoked, suspended, denied or canceled are not eligible for a CDL in Nebraska.

Endorsements
H – Hazardous Material
N – Tank Vehicles
P – Passenger Vehicles
S – School Bus
T – Towing a Double or Triple Trailer
X – Combination Tank Vehicle and Hazardous Materials

Hit the Open Road

nebraska CDL License Test Tips

All Nebraska CDL applicants must pass the written knowledge test prior to taking the skills test. There are 50 questions on the general knowledge test, and applicants must answer 40 questions correctly. To be eligible for an endorsement, applicants must take a separate test for each endorsement. Applicants must answer 80 percent of the questions on each test correctly.

The Nebraska skills test includes a pre-trip vehicle inspection, basic control skills and on-road driving. Applicants must pass each evaluation. Recent military veterans and current military members can qualify to have the skills test waived if they were discharged from the military within the past year or are currently enlisted in the reserves or service. Or, they are eligible if they have operated a motor vehicle equivalent to a commercial motor vehicle in the military. Applicants must complete an Application for Military Skills Test Waiver. This document must be certified by a commanding officer.

Additional Information

Information on the Nebraska Department of Motor Vehicles

The Nebraska Department of Motor Vehicles regulates the CDL license requirements in Nebraska. To get more information contact them via:

Website: https://dmv.nebraska.gov/cdl/cdl

Phone: 402.471.3861

Contact Locations: https://dmv.nebraska.gov/locations

Additional Nebraska CDL Helpful Links

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

nebraska CDL Practice Test

CDL Category Practice Tests

CDL Practice Test

How To Get A nebraska Commercial Drivers License

Hit the Open Road

nebraska CDL License Test Tips

Additional Information

Information on the Nebraska Department of Motor Vehicles

Additional Nebraska CDL Helpful Links

nebraska
CDL Practice Test