north carolina
CDL Practice Test

Welcome to the CDL practice test site for North Carolina. You can use this site to prepare for the official North Carolina DMV CDL Test. The questions on these practice tests apply to all of the areas you'll need to be knowledgeable in to obtain your NC CDL. You can take these practice tests as many times as you need to, and all of these tests are 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

What is a common cause of tire fires?

underinflated tires

cold tires

overinflated tires

all of these answers are correct

2 / 40

Alcohol evaporators in some air brake systems help to:

decreases the risk of water in the air brake valves in cold weather

decrease the chances of ice in the air brake valves in cold weather

it removes fuel from the air lines

cleans out oil from the air lines

3 / 40

This object should not be spliced, cut, chafed, or worn through to allow steel braid to show.

Mud flaps

The lockjaw

Tires

Electric/air lines

4 / 40

Why should you use chocks when parking a trailer without spring brakes?

the trailer wheels are free to turn as there will be no service brakes should the air supply in the trailer air tank leak

to prevent a runaway trailer

the trailer wheels are free to turn as there will be no emergency brakes should the air supply in the trailer air tank leak

to prevent someone from stealing the vehicle

5 / 40

You should look into the back of the fifth wheel on a dolly to see if it is locked onto the kingpin.

false

true

only in a level loading dock

only at the end of a shift

6 / 40

Which of the following should you do when driving the school bus in high wind?

Speed up to get away from the wind as quickly as possible.

Keep a strong grip on the steering wheel and try to anticipate gust.

Drive only head-in to the wind to avoid cross-wind buffeting.

Pull off the road to wait for the winds to die down.

7 / 40

The minimum tire tread depth for front tires is:

4/32-inch

1/32-inch

3/8-inch

1/2-inch

8 / 40

A drawbridge does not have a traffic light showing green or a traffic control attendant. How many feet before the draw of a bridge must a bus driver stop?

At least 25 feet.

At least 50 feet.

At least 100 feet.

At least 75 feet.

9 / 40

Which of these statements about signaling is correct?

Signal to others that it is safe to pass your bus.

Signal your intentions early and continuously.

Leave your signal on long after you've changed lanes.

Signaling is a warning, not a request.

10 / 40

For what reason do you keep the starter switch key in your pocket during the pre-trip inspection?

you will need it to open the side box

you will need it to inspect the trailer

so no one moves the vehicle while you are inspecting underneath it

so you don't lose it

11 / 40

How should the pintle hook be when backing a dolly under the second trailer?

in the latched position

in the unlatched position

in a halfway open position

removed from the dolly

12 / 40

When backing, what is the best method to use to avoid blind spots?

use a helper

look at your path

use mirrors on both sides

back towards the driver's side, where you can see better

13 / 40

What do you need to do to supply air to the air tanks of the second trailer?

open up the shutt off valves on the rear of the first trailer and close the shut off valve at the back of the second trailer

close the shut off valves at the back of each trailer

open the shut off valve at the back of both trailers

none of the answers listed

14 / 40

What is a passive railway crossing?

The type of crossing with no cross buck sign.

The type of crossing, which does not have any type of traffic control device.

The type of crossing where you can pass the tracks without stopping.

The type of crossing on which the driver does not have to stop.

15 / 40

Which trailer is more likely to roll over when pulling 3 trailers?

the first trailer

the last trailer

the second trailer

the tractor

16 / 40

A shipment described on the Hazardous Waste Manifest may only be delivered to another _______ carrier or treatment facility, who then signs the ______, giving you a copy which you must keep.

licensed, manifest

trucking, uniform hazardous waste manifest

responsible, papers

registered, uniform hazardous waste manifest

17 / 40

What is the first thing to do if your vehicle catches fire while driving?

open the hood and let the flames die down

open the door and jump out of the vehicle

find a service station to pull into

pull off the road and park in an open area

18 / 40

While driving on a clear night with low beam headlights, you should be able to stop within:

2 lengths of your vehicle.

The distance you can see ahead of you.

The distance you will travel in the next 20 seconds.

Half of a football field.

19 / 40

Do converter dollies have spring brakes?

none of the answers listed

yes

some do

20 / 40

Select the true statement about empty trucks:

they have a smaller stopping distance than full trailers

they have poor traction due to wheel lockup and bouncing

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

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

21 / 40

You should____when an emergency requires you to quickly stop due to a crash.

use the hand valve

use only the engine brakes

maintain pressure on the brake pedal

use stab or controlled braking

22 / 40

If you have riders on board, you must never refuel:

Unless on a scenic tour bus.

In a closed building.

At any time.

With any window open.

23 / 40

What is a king pin?

it is a pin that a driver receives for being a safe driver

it is a pin that locks the trailer to the tractor on the fifth wheel

it is a pin that locks the air brake lines together

it is a pin that holds the wheel on to the axles

24 / 40

The two other places where the hazardous identification number must appear are:

On a temporary license plate holder and the steering wheel.

Any bulk packaging and the cargo tanks.

On the back of the truck and inside the glove compartment.

On the gas tank and a sticker in the glove compartment.

25 / 40

What position should the heaviest trailer be in when pulling 3 trailers?

in the middle

in the front

in the back

it makes no difference

26 / 40

Select the answer that is controlled by the foot brake.

the emergency brake

the service air line

the shut off valves

the engine brake

27 / 40

When you discharge an unruly passenger, you must choose a place that is:

Off the regular route.

The next stop.

As safe as possible, or the next stop.

Dark and poorly lighted.

28 / 40

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

Stripped screw drive linkages and fluid drips.

Bent or dinged lift floor.

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

Leaking, damaged, or missing wheelchairs.

29 / 40

What is the service air line controlled by?

the relay valve that connects the trailer air tanks to the trailer air brakes

all answers listed

the pressure applied to the trailer hand brake or by the foot brake

the relay vavle by sending air pressure from the trailer air tank to the trailer brake chambers

30 / 40

If you are driving a 100-foot truck with double trailers at 30 mph in dry conditions, how many seconds of space should there be between your truck and other vehicles?

31 / 40

Of the following hazardous material classes, which is the most dangerous?

Division 61

Division 64

Division 63

Division 62

32 / 40

Air pressure should build___with a dual air system.

from 85 to 100 psi in 45 seconds

from 70 to 125 psi in 60 seconds

from 50 to 80 psi in 60 seconds

from 60 to 100 psi in 45 seconds

33 / 40

This gauge has a governor cut-off.

Air gauge

Oil pressure gauge

The ammeter gauge

The coolant temperature gauge

34 / 40

This object should not have any missing parts, be fully raised, the crank handle is secured, and that there is no damage to the frame.

Drop arm

Release arm

Lifts/doors/tires

Landing gear

35 / 40

Hazardous materials (that are not forbidden) carried on a bus must be:

Labeled

Stored in the passenger compartment

All of these answers are correct

Carried in a metal box

36 / 40

Where should you place your warning devices if you must stop on a one-way or divided highway?

100 feet, 200 feet, and 300 feet toward approaching traffic

10 feet, 100 feet, and 200 feet toward approaching traffic

20 feet, 50 feet, and 100 feet toward approaching traffic

50 feet, 100 feet, and 150 feet toward approaching traffic

37 / 40

You should turn off your engine when loading flammable liquid unless:

You are loading at night and need the headlights.

The material does not need a placard.

You need the engine to run the pump.

You are a non-smoker.

38 / 40

Before backing under the trailer after connecting the air lines you should:

have a random pedestrian direct your path of travel

supply air to the trailer system and then pull the air supply knob out

take a walk around the vehicle to make sure it is clear of obstructions

double check to make sure the trailer brakes are off

39 / 40

The emergency air line is _____and the service air line is____.

red, blue

red, green

white, blue

yellow, white

40 / 40

You must first______to supply air to the trailer.

pull out the tractor protection valve

turn off the engine so you can hear the brakes

push in the tractor protection valve

cross the air lines to check for the presence of leaks

Your score is

The average score is 0%

5/5 - (3 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get A north carolina Commercial Drivers License

To be eligible for a CDL in North Carolina, applicants must meet the following age eligibility requirements.

Be at least 18 years old to operate a commercial vehicle intrastate (within North Carolina only).
Be at least 21 years old to operate a commercial vehicle interstate (outside of North Carolina).

North Carolina applicants must provide proof that they are medically fit to operate a commercial vehicle and pass a vision test. Applicants are required to submit the following documents.

(Form CDL-MED-1) Medical Certification of Driver Type or Commercial Driver’s License
Medical Card
Full Medical Report (depending on the circumstances)

Drivers who have had their licenses revoked, suspended, denied or canceled are not eligible for a CDL in North Carolina. Applicants can be disqualified from the application process for having multiple licenses.

North Carolina CDL Endorsements
H – Hazmat Vehicles
N – Tank Vehicles
P – Passenger Vehicles
S – School Bus
T – Double or Triple Trailer

Hit the Open Road

north carolina CDL License Test Tips

All North Carolina CDL applicants must pass the general knowledge test prior to taking the skills test. The general knowledge test consists of 50 questions. To pass the North Carolina test, applicants must score 80 percent or higher. Applicants who require additional endorsements must pass additional tests and pay the required fees. The North Carolina skills test can be taken 14 days after applicants pass the knowledge test. It includes a pre-trip vehicle inspection, basic control skills and on-road driving. Applicants must pass each section.

Military veterans who were discharged within 1 year of the application and current military members can apply to have the skills exam waived if they meet the requirements. To qualify for a waiver, applicants must:

Be active duty military personnel.
Have operated a motor vehicle equivalent to a commercial motor vehicle in the military within 2 years of the application date.
Submit a Certification for Waiver of CDL Skills Test for Military Personnel.

Additional Information

Information on the North Carolina Department of Transportation

The North Carolina Department of Transportation provides administers CDL license requirements in North Carolina. To get more information contact them via:

Website: https://www.ncdot.gov/dmv/license-id/driver-licenses/commercial/Pages/default.aspx

Phone: 915.715.7000

Additional North Carolina CDL Helpful Links

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

north carolina CDL Practice Test