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

There should be ___space between the upper and lower fifth wheel after coupling.

none of the answers listed

1/30 inch

1/12 inch

1/8 inch

2 / 40

Do you need to stop before a railroad crossing if you are hauling 100 pounds of Division 4.3 materials?

Impossible to tell without more information

Only if the arm is down telling vehicles to stop

Yes

3 / 40

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

Explosives

Flammable gases

Poisons

Flammable liquids

4 / 40

How should you inspect a converter dolly?

as if it is an engine

as if it is a trailer

as if it is cargo

as if it is an axle with a fifth wheel

5 / 40

Select the part that is not a part of the drum brake:

axle

slack adjuster

safety valve

brake drum

6 / 40

How do you make sure the trailer height is correct before coupling?

visually check that the rear trailer is lower than the fifth wheel so that the trailer raises slightly when the dolly is pushed under it

you do not need to do a visual check

visually check that the lead trailer is higher than the fifth wheel so that the trailer will lower when the dolly is pushed under it

visually check that they are level height wise

7 / 40

It takes special care to drive tankers with liquid in them because:

The low center of gravity of the load.

The baffles create odd rocking motions.

The high center of gravity of the load.

The movement of the liquid even when the truck is stopped.

8 / 40

Make sure that_____before you back under a trailer.

the trailer brakes have been locked

the air supply knob has been pushed it

the air brakes are in an off position

the air supply knob has been pulled out

9 / 40

This object should be checked to make sure that the cap(s) are on tight, that it is secure, and there are no leaks.

Air coolant system

Fuel tank

Windshield fluid line

Exhaust system

10 / 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

true

false

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

11 / 40

Select the item that is not checked in the engine compartment:

The level of the oil

The oil pressure

The coolant level

The power steering fluid

12 / 40

When approaching a school bus stop, you should:

Continuously check all mirrors.

Gradually decrease speed until the stop.

Activate your overhead amber lights.

All of these answers are correct.

13 / 40

When accelerating:

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

always use the parking brake to slow down

speed up smoothly and gradually and avoid jerking

"hammer down" when your wheels start to spin

14 / 40

What does the service brake system do?

they are only on vehicles that have hydraulic brakes

they are valves that maintain air tank pressure

under normal driving it applies and releases the brakes by using the brake pedal

they are part of an official vehicle inspection

15 / 40

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

use a helper

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

look at your path

use mirrors on both sides

16 / 40

You should check your mirrors while making a lane change:

after you signal your intent to change lanes

right after you start the lane change

after you have completed the lane change

all answers listed

17 / 40

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

Back toward the side opposite the driver.

Back and turn toward the driver's side.

Back quickly while no one is coming.

Use your head as the mirrors are unreliable.

18 / 40

Why is it dangerous to unlock the pintle hook with the dolly still under the rear trailer?

the spring brakes may release

the fifth wheel may be misaligned

the dolly tow bar may fly up

the kingpin may snap in half

19 / 40

Under which two special conditions should you downshift?

before starting down a hill and before entering a curve

before starting down a hill and before going up a hill

if there is an accident and in sudden heavy rain

before entering a curve and before going up a hill

20 / 40

Commerical vehicles typically have this type of brake.

S-Cam brakes

drum brakes

stab brakes

rectangle brakes

21 / 40

Which of the following types of cargo can never be carrier on a bus with riders?

Emergency hospital supplies.

Emergency tear gas.

Small arms ammunition (orm-d).

Emergency drug shipments.

22 / 40

What does outage mean?

It is the weight of the liquid.

It is how quickly the tanks drain.

It is the movement of the liquid.

It is the allowance needed for the expansion of liquid.

23 / 40

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

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

Any bulk packaging and the cargo tanks.

On a temporary license plate holder and the steering wheel.

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

24 / 40

When should the trailer hand valve be used?

all answers listed

to test the trailer brakes

when parked in a service lot

when driving at highway speeds

25 / 40

What is the safest way to stop unruly behavior on the bus?

Pull off the road in a safe location, secure the bus, stand up, and tell the students what behavior you expect of them.

Have the unruly students move to the front of the bus.

Keep checking the rear view mirror so you can see what happened and report to the principal.

Yell loudly for the students to sit down and behave themselves.

26 / 40

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

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.

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.

27 / 40

If you must stop on the shoulder of the road, you should place warning devices at all of the following places except...

within 10 feet of the front or rear corners

about 100 feet in front of your vehicle

about 100 feet behind your vehicle

on the other side of a divided highway

28 / 40

The manual says you should look _____ ahead while driving.

9 to 12 seconds, at highway speeds, about a quarter of a mile

15 to 20 seconds, at highway speeds, about a half of a mile

5 to 8 seconds, at highway speeds, about an eighth of a mile

12 to 15 seconds, at highway speeds, about a quarter of a mile

29 / 40

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

in the unlatched position

removed from the dolly

in a halfway open position

in the latched position

30 / 40

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

1-2 inches while the brakes are set

movement is not allowed

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

31 / 40

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

At any time.

Unless on a scenic tour bus.

With any window open.

In a closed building.

32 / 40

Should your air compressor stop working:

there will be no affect to your brakes

the brakes will lock up on you immediately

you will lose your ability to brake immediately

there will still be air pressure left in the air tanks

33 / 40

Air brake systems should not lose air faster than____when testing for air leakage rates in combination vehicles before applying the brake pedal.

3 psi a minute

5 psi a minute

6 psi a minute

2 psi a minute

34 / 40

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

none of the answers listed

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

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

35 / 40

Cylinders containing compressed gases may only be loaded onto a vehicle without a flat floor or platform if the cylinders are:

Loaded in an upright or horizontal position.

All of these answers are correct.

In boxes that will keep them from turning over.

Loaded into racks attached to the vehicle.

36 / 40

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

Smooth bore

Bulktruck

Waffle

Hard stroke

37 / 40

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

rock the trailer side to side with the trailer brakes on

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

drive forward with a sharp jerk

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

38 / 40

When driving in very hot temperatures, you should:

insure that you have enough antifreeze in the system

check your tires every 2 hours or every 100 miles

all of these answers are correct

let your tires cool down (remain stopped) if they are too hot to touch

39 / 40

Tires should should be replaced:

when there are broken valve stems

all of these answers are correct

if the tread depth on your front tires is less than 4/32 deep

when the tread separates

40 / 40

When should you avoid using the parking brake?

when the brakes are hot

while on an incline

when the air pressure is low

whenever you park

Your score is

The average score is 65%

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