connecticut
CDL Practice Test

This site is available to practice and prepare to take the Connecticut CDL test. These tests are free and you are able to take tests as many times as you would like as you prepare to go to the DMV to take the CT CDL knowledge test. You will be presented with 40 questions and you must answer 32 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

The purpose for the emergency air line is:

none of the answers listed

supply air to the trailer air tanks and on combination vehicles, controls the service brakes

supply air to the tractor air tanks and on combination vehicles controls the emergency brakes

to supply air to the trailer air tanks and, on combination vehicles, controls the emergency brakes

2 / 40

Buses may NOT have recapped or regrooved tires:

On the outside rear wheels.

On front wheels.

When it's been raining.

Anywhere except on the front wheels.

3 / 40

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

All of these answers are correct.

To replace the rear door emergency buzzer.

As a safety feature when the exit door is open.

To replace the parking brake.

4 / 40

How do you check the connection after locking the kingpin into the fifth wheel?

pull the tractor at a sharp right to release the trailer brakes

pull the tractor ahead gently with the trailer brakes locked down

pull forward 25 feet, turn to the left, and then to the right

pull forward 25 feet, turn to the right, and then to the left

5 / 40

If students must cross the street, when they get off the bus, which statement is true?

When the driver signals that it is safe to proceed, the students must run across the street to reduce the exposure to danger.

For crossing, students should make eye contact with the bus driver and wait for the driver's signal that it is safe to proceed.

If the bus is equipped with the crossing gate, the danger of running over the child is eliminated.

The student should wait to cross the street until the bus continues on its route.

6 / 40

What is the most important reason for doing a vehicle inspection?

to insure that you will achieve the best gas mileage

to save you money by preventing costly repairs

safety for yourself and other road users

federal and state laws require you to inspect your vehicle

7 / 40

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

The mirrors

The headlights

The lug bolts

The windshield

8 / 40

What is the earliest way to notice a trailer skid?

you can see it in your mirrors

you can feel it pulling your steering wheel

you can feel a jerk in the back of the tractor

you can hear the tires squealing

9 / 40

If there is not a sight glass to check the oil level you are required to look for leaks around the _____.

brake pads

axle seals/hub oil

wheel rims

transmission

10 / 40

The brake pushrod should not move more than____for manual slack adjusters.

checking is not required in vehicles built after 1994 as they have automatic slack adjusters

an inch when pulled by hand with the brakes released

movement is not allowed

1-2 inches while the brakes are set

11 / 40

How high should you crank the landing gear?

as high up as it will go

until the crank handle is loose

for it to be 6 inches above the ground

so that you can clear railroad tracks

12 / 40

Suspension systems:

keep the steering wheel tight

keep the axles in place

keep the load secure

keep the brake drums from failing

13 / 40

Remember to____when connecting the converter dolly to the rear trailer.

all answers listed

check the trailer height

ensure that the landing gear is slighty off of the ground

lock the trailer brakes

14 / 40

What are spring brakes?

they do not function when the psi falls below 30 psi

they are brakes that automatically come on for a truck or trailer when the psi drops too low

they are powerful springs that hold back air pressure when driving

all of these answers are correct

15 / 40

Air tanks need to be drained:

to keep the tanks warm when not in use

to keep the tanks cold when not in use

air tanks should absolutely never be drained

to prevent water and oil from building up in the tank

16 / 40

An "A/W" the first column of the hazardous materials table means:

This material has no restrictions when shipped by air and/or water.

It is ok to ship this material by air only.

This material is only restricted when shipped by air and/or water.

There is no restrictions with this material if shipped by water only.

17 / 40

Where can you find a shipper’s certification?

On the original shipping paper.

There is no such thing.

It is a separate document that all hazmat drivers must keep in their vehicles.

On all packages.

18 / 40

The locking jaws of the kingpin should close around:

the apex

the tip

the base

the shank

19 / 40

What does the amount of liquid allowed in the tank depend on?

Whether and how much the liquid will expand during the trip.

The legally allowed weight limits.

All answers listed.

The size of the tank.

20 / 40

Select the correct description for a bulkhead tank.

It is one large tank.

None of the answers listed.

They are divided with holes to allow liquid to flow through controlling surge.

They are divided down into smaller tanks.

21 / 40

Why should you know the outage?

Just in case you become a contestant in a trivia competition.

Heavier liquids don't require outage.

Liquids expand different amounts.

Baffles are not always permitted with certain types of liquids.

22 / 40

Is this statement true or false: You do not need to use the parking brake if are leaving your vehicle for a short amount of time.

only when the vehicle has over 60,000 miles on it

false

true

only when the vehicle has over 25,000 miles on it

23 / 40

Which of these is a good rule for backing a straight bus?

Use your head as the mirrors are unreliable.

Back quickly while no one is coming.

Back and turn toward the driver's side.

Back toward the side opposite the driver.

24 / 40

You don't want to use wheel chocks when hooking a combination to a second trailer with no spring brakes. What should you do?

make sure the trailer will not roll away when coupling

use a portable generator to supply brake pressure

none of the answers listed

supply air to the trailer air system via the tractor and then disconnect the emergency line

25 / 40

You should activate hazard lights within approximately how many feet before railroad crossing?

300 feet

200 feet

400 feet

250 feet

26 / 40

Select which is not an engine compartement belt:

A power steering belt

A water pump belt

A safety belt

An air compressor belt

27 / 40

Most states require school bus drivers to take a physical examination:

Annually

Every 2 years

Twice per year

Every 3 years

28 / 40

How should the trailer be lined up when preparing to back the tractor up?

about 12 degrees to the right

about 12 degrees to the left

directly behind the trailer

directly in front of the trailer

29 / 40

A tank trailer should never be fully loaded due to:

The liquid can expand causing a leak from the trailer.

The baffles aren't as effective.

The will be more shifting of the load.

The movement is stronger.

30 / 40

Select the true statement about emergency brakes:

they are required to be held on by a mechanical force

they are required on all commercial vehicles

all of these answers are correct

they are required to be activated the loss of air pressure

31 / 40

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

all of these answers are correct

you might damage your leaf springs

someone might try to pass you on your right

someone might try to pass you on your left

32 / 40

Make sure____when the front trailer supports are up and the trailer is sitting on the tractor.

neither of the answers listed

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

there is enough space for clearance between the nose of the trailer and the tops of the tractor tires

both of the answers listed

33 / 40

On the Hazardous Materials Table, column 1 shows:

What materials can be loaded together.

How to ship an item.

To what shipping mode the information on that line applies.

How much of the material can be put in a vehicle without placarding.

34 / 40

Rods, connecting links, and arms from the steering box to the wheel are a part of the:

Power steering fluid

CB radio

Braking system

Steering linkage

35 / 40

You should check the_____when loading small tanks equipped with bulkheads.

fuel to air ratio

percentage of water

distribution of the weight

expansion rate

36 / 40

The correct trailer height when coupling the rear trailer is:

when the locking jaws are open around the kingpin

there is 5 inches of space between the lower and upper fifth wheel

the kingpin is touching the fifth wheel

slightly lower than the center of the fifth wheel

37 / 40

How many different hazard classes are there?

38 / 40

When should the trailer hand valve be used?

when driving at highway speeds

to test the trailer brakes

all answers listed

when parked in a service lot

39 / 40

What does the amount of liquid you can carry depend on?

The outage of the liquid.

The center of gravity.

The material the baffles are made from.

The vehicle's horsepower rating.

40 / 40

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

none of these answers are correct answers are correct

it increases by four times

it increases by two times

it stays about the same

Your score is

The average score is 0%

4.5/5 - (2 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get A connecticut Commercial Drivers License

Those looking to obtain a Connecticut CDL must have a valid operator’s license and the following requirements below. Applicants between the ages of 18 and 21 can apply for an intrastate CDL license. Only those who are 21 years of age or older may apply for an interstate CDL as well as Hazmat, Doubles/Triples, Passenger, and School Bus Endorsements. All CDL applicants must have a medical examiner’s certificate, or DOT physical card, to be eligible for a CDL. In addition, all applicants must complete a self-certification form which describes the types of vehicles that the applicant intends to drive with their commercial driver’s license.

Any applicants who have the following are disqualified from receiving their commercial driver’s license.

If you are subject from receiving CDL driving privileges in another state.
If you have an impaired driving conviction in a commercial vehicle in the past 24 months.

If your license is currently suspended, revoked, denied, or canceled.
If you have more than one driver’s license.

CDL applicants are required to complete at least one knowledge assessment and a skills test to ensure their proficient understanding and knowledge of the commercial driving laws in the state of Connecticut.

Endorsements
T – Double or Triple Trailers
P – Passenger / Transport
N – Liquid Bulk / Tank Cargo
H – Hazardous Materials
X – Hazardous Material and Tank Combined
S – School Bus
V – Student Transportation Vehicle
A – Activity Vehicle
F – Taxi, Service Bus, Livery, Motor Bus, Motor Coach

Hit the Open Road

connecticut CDL License Test Tips

All applicants are required to complete written knowledge tests to obtain their CDL. Those looking for a Class A CDL will need to complete a 70-question test. Those looking for Class B and C CDLs will need to complete a 50-question general knowledge test. Those seeking endorsements and removal of the Air Brake Restriction will be responsible for taking a knowledge test for each endorsement or removal sought. These tests range between 20 and 30 questions. All tests must be passed with a score of 80 percent or greater.All applicants must complete a skills test in accordance with the federal regulations. Each skills test is comprised of a pre-trip inspection, driving assessment, and basic control skills. All three parts must be passed in order for the applicant to receive their commercial driver’s license. Those seeking endorsements must take the skills test in the vehicle type their intended endorsement is for.

Additional Information

Information on the Connecticut Department of Motor Vehicles

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

Website: https://portal.ct.gov/DMV/Licenses/Licenses/Commercial-Drivers/CDL---Main-Menu

Phone: 860.263.5700

Additional Connecticut CDL Helpful Links

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

connecticut CDL Practice Test

CDL Category Practice Tests

CDL Practice Test

How To Get A connecticut Commercial Drivers License

Hit the Open Road

connecticut CDL License Test Tips

Additional Information

Information on the Connecticut Department of Motor Vehicles

Additional Connecticut CDL Helpful Links

connecticut
CDL Practice Test