south carolina
CDL Practice Test

This is a site to help you prepare to take the CDL permit test in South Carolina. You can take these practice test questions as many times as you like, and the site is free to use. The questions on this practice test cover rules from the SC CDL manual. 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

Select the true statement in regards to the braking power of spring brakes.

it depends on the adjustment of the service brakes

it will not be affect by the condition of the service brakes

the braking prower increases when the brakes are hot

braking power can only be tested by licensed mechanics

2 / 40

Never refuel your bus:

Without a static chain.

With any of the windows open.

With a higher grade of fuel.

In a closed building with passengers on board.

3 / 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 a closed position

in a halfway open position

in a 1/3 way open position

in an open position

4 / 40

If you have to swerve to avoid a hazard, it's important to:

None of these answers are correct.

Warn passengers with a loud and clear voice.

Know where other vehicles are around your bus by checking your mirrors.

Make sure your passengers are wearing seat belts.

5 / 40

Animals and human foodstuffs should not be loaded in the same vehicle with?

Flammable liquids

Poisons

Flammable gases

Explosives

6 / 40

Forward and back surge is powerful in this type of tanker.

Hard stroke

Bulktruck

Smooth bore

Waffle

7 / 40

The sliding mechanism and locking device for a tandem axle on trailers is:

Apron

Locking pins/tandem release arm

Suspension system

Metal frame

8 / 40

To test the tractor-trailer connection for security, you should:

drive forward in a high gear with the trailer brakes on and check it

drive forward in a low gear with the trailer brakes locked and then look at it carefully

rock the trailer side to side with the trailer brakes on

drive forward with a sharp jerk

9 / 40

What do you do first during step 3 of starting the engine and inspecting the inside of the cab?

Start the engine after getting in the cab.

Shift the gear to neutral.

Make sure the parking brake is activated after getting in the cab.

Listen for any unsual noises after starting the engine.

10 / 40

Which signals may be used to warn of a stopped vehicle that contains explosives?

Reflective triangles

Flares or fuses

All of these answers are correct

Signal fires

11 / 40

Which of the following statements about the bus interior is false?

Never drive with an open emergency exit door or window.

The seats must be safe for riders all seats must be securely fastened to the bus.

If there is a red emergency door light, it must work.

If you use your outside lights, you don't need to turn on red emergency door light.

12 / 40

When checking for_____you are looking for dripping fluids or puddles on the ground below the transmission or engine.

leaks

coolant level

air brake system

power steering fluid

13 / 40

____is what can legally hold the parking brake or emergency brake in position for a bus, truck, or truck tractor.

Brake pressure

Air pressure

Spring pressure

All of these answers are correct

14 / 40

If you double your speed, what will happen to your stopping distance?

it increases by four times

none of these answers are correct answers are correct

it increases by two times

it stays about the same

15 / 40

How do you hook a combination to a second trailer without spring brakes and without using wheel chocks?

go ahead and couple it

make sure the trailer won't roll when coupling

have the trailer electric cord to a generator so it can supply braking power

disconnect the air supply lines after supplying air to the trailer air system via the tractor

16 / 40

A tank vehicle:

All answers listed.

Is a vehicle that can transport liquified gasses.

Is a vehicle that can transport liquid.

Is a vehicle that can transport bulk fertilizer.

17 / 40

What is most likely to occur when driving a tanker truck and the front wheels begin to skid?

The tank will roll over.

Nothing will occur.

No matter how you steer, you will continue in a straight line.

The surge will disconnect the tank from the truck.

18 / 40

Select the inappropriate way to test for the low pressure warning signal.

have the electrical power on

turn off the engine

ask for a pedestrian to listen for the signal

decreased the air pressure by stepping on and off the brake pedal

19 / 40

It is good practice to_____when uncoupling.

have the glad hands coupled together

make sure the electrical cable is hanging with the plug end down

all answers are appropriate

have the glad hands coupled to the dummy couplers

20 / 40

What is the best way to figure out how many seconds of following distance you have?

use the stopwatch on your phone to try to determine how long before you reach a mile marker after the car in front of you appeared to reach it

get 1/4 closer to the car in front of you, then back off again multiply how long this took you by 4 for following distance

wait until a vehicle passes a shadow or landmark, then count the seconds until you pass it

text a friend and tell them to text you back in ten seconds and see how long that seemed to take compared to how far you traveled

21 / 40

Select the best description of a baffle tank:

None of the answers listed.

They are divided and have holes for liquid to flow through controlling surge.

They are tanks divided down into multiple smaller tanks.

It is one large tank.

22 / 40

Before transporting a sealed load, you must check:

all of these answers are correct

a small sample of whatever is inside

a picture of whatever is inside

that you don't exceed gross weight and axle weight limits

23 / 40

A battery box check is important. The battery must be secure, connection must be tight, and cell caps must be present. In addition these items should be checked:

Battery connections should not show signs of excessive corrosion, and the battery box and cover or door should not be damaged and should be secure.

Battery connections should not show signs of excessive corrosion, but the battery box and cover or door is unimportant.

Battery connection should show signs of excessive wear.

The fluid level inside the battery.

24 / 40

Shifting into a lower gear and removing your foot off of the accelerator to slow your vehicle is known as?

anti-lock braking

double clutching

engine braking

brake fade

25 / 40

If a rider wants to bring a car battery or a can of gasoline or kerosene aboard your bus, you should:

Instruct the rider to sit next to an open window.

Put the materials in the bus's "safe box".

Not allow the rider to do it.

Have the rider pay a second fare.

26 / 40

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

The locking pins

The arm bar

The release arm

The apron

27 / 40

Select the statement of what you should not do if you are required to drive through flowing water or deep puddles.

drive at a high speed

increase engine rpm

shift into a lower gear

quickly turn the steering wheel side to side

28 / 40

Which of the following is a reason to evacuate the school bus?

The bus is stalled on a shoulder of a 4-lane divided highway and it is getting hot inside.

A child set off a stink bomb inside the bus.

The bus abs warning light is on.

The bus is stalled on a rail road track, but there is no train in sight.

29 / 40

Drivers placard their vehicle to _____ the risk.

communicate

minimize

take away

elevate

30 / 40

What are the dividers that are inside tankers that have an opening at the bottom and top?

Layers

Bulkmets

Baffles

Taffles

31 / 40

One reason hauling liquids in tank vehciles require special care is:

Because of the extreme weight.

Because of the movement of the liquid.

Because of strong winds.

Because of uneven expansion.

32 / 40

Which of the following is a clue another driver is impaired:

Exiting the interstate when there's no gas station visible.

Stopping at a green light, or waiting too long at a stop.

Open window in warm weather.

All of these answers are correct.

33 / 40

______is a device that connects the service and emergency air lines between the tractor and trailer.

Service lines

Relay knife

Top off valves

Glad hands

34 / 40

You should brake on a long steep downgrade hill as a supplement to the braking effects of the engine

when the GVCW is above 20,000 lbs

yes

when the vehicle is runaway

35 / 40

What is the service air line controlled by?

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

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

36 / 40

Some hazardous materials may not be loaded together with other hazardous materials. The prohibited combinations are listed in the:

Hazardous waste manifest.

Segregation and separation chart.

Hazardous materials table.

List of hazardous materials and reportable quantities.

37 / 40

Charter drivers should not:

Remind riders about rules once trip begins.

Allow riders on the bus until departure time.

Mention rules at the start of the trip.

Explain rules at the start of the trip.

38 / 40

Select the true statement about emergency steering and tankers:

None of the answers listed.

It is easier to counter steer than other vehicles.

Have a firm grip on the steering wheel before making quick movements of the steering wheel.

Do not apply the brakes when making quick movements of the steering wheel.

39 / 40

A safe haven is:

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.

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

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

40 / 40

You must have placards for explosives, poison gas or flammables exceeding:

10 pounds

10 cartons

Any amount

100 pounds

Your score is

The average score is 0%

5/5 - (1 vote)

CDL Category Practice Tests

CDL Practice Test

How To Get A south carolina Commercial Drivers License

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

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

South Carolina CDL applicants must be certified that they are medically fit enough to operate a commercial vehicle and pass a vision test. Applicants are required to submit the following documents.

(Form MCSA-5876) Medical Examiner’s Certificate
(Form DL-405A) Medical Certification Requirements

Interstate non-excepted (drivers who do not work for the state or federal governments) must meet federal DOT requirements. Intrastate non-excepted drivers must meet the state requirements. Drivers who have had their licenses revoked, suspended, denied or canceled are not eligible for a CDL in South Carolina. Applicants can be disqualified for having multiple licenses.

South Carolina CDL Endorsements

H – Hazmat Vehicles
N – Tank Vehicles
P – Passenger Vehicles
S – School Bus
T – Double or Triple Trailer
X – Combination Tank Vehicles and Hazmat Vehicles

Hit the Open Road

south carolina CDL License Test Tips

All South Carolina CDL applicants must pass the general knowledge test prior to taking the skills test. To pass the South Carolina test, applicants must score 80 percent or higher. Applicants who require additional endorsements must pass additional tests and pay the required fees. The South 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 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 currently enlisted in the military.
Possess a valid South Carolina driver’s license.
Have operated a commercial vehicle as part of their military duties.
Have been discharged from the military within the past 12 months.
Submit (Form DL-408A) CDL Skills Test Waiver Application for Military Personnel. The commanding officer must sign this document within 90 days of the CDL application.

Additional Information

Information on the South Carolina Department of Motor Vehicles

The South Carolina Division of Motor Vehicles administers CDL license requirements in South Carolina. To get more information contact them via:

Website: http://www.scdmvonline.com/Driver-Services/Commercial-Licenses

Phone: 803.896.5000

Additional South Carolina CDL Helpful Links

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

south carolina CDL Practice Test