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

What should you do before you begin to couple?

check your path for any hazards

activate the spring brakes

inspect the condition of the frame of the tractor

position the fifth wheel beforehand

2 / 40

Select the definition for outage:

It is the liquid that must be drained off to meet legal carry limit.

It is loss of power to the headlights.

It is the process of liquid expansion as it becomes warm.

It is how much power is lost to the hydraulics.

3 / 40

How often should you check the cargo you are transporting?

after every break you take during driving

all of these answers are correct

within the first 50 miles after beginning a trip

every 150 miles or every three hours

4 / 40

The CDL manual indicates the last step on picking up students at the bus stop is as follows:

Place transmission in park or neutral and set parking brake.

Make a final check to confirm all traffic stops before opening the bus door and signaling students to approach.

Open the service door just enough to activate the alternating red light when traffic is in a safe distance from the bus.

Activate the amber flashing caution lights to warn vehicles that the bus will stop to load passengers soon.

5 / 40

In the event of a tire failure you should...

disengage the clutch so you are in neutral gear

pump the brakes until you come to a stop

stay off the brake and hold the steering wheel firmly

accelerate quickly until you find a place to pull over

6 / 40

Select the reason as to why you should not use the trailer hand valve while driving.

it should not be used on dry roads due to road conditions

it releases too much air from the system

it could cause the trailer to skid

the trailer brakes will not be evenly applied

7 / 40

The main reason you should pull the dolly out from under a trailer before disconnecting it from the trailer in front is:

to provide additional lateral stabilization to the front trailer

it is possible that the dolly tow bar could fly up making it difficult to re-couple

so the rear-trailer's air brake system will stay charged and keep the trailer wheels locked to prevent rolling

removing the dolly before uncoupling is not the correct procedure

8 / 40

What is the best way to stop all skids?

use controlled or stab braking

quickly turn the steering wheel side to side

restore traction back to the tires

accelerate and countersteer

9 / 40

What is the minimum amount of distance you should maintain when driving at 50 mph in ideal conditions with a 100 ft twin trailer combination?

11 seconds

13 seconds

6 seconds

8 seconds

10 / 40

An emergency escape ramp should be used _____.

only when not carrying a load

any time the truck experiences a significant loss of braking power

only in ideal conditions

only when it is raining

11 / 40

What is the next step after securing the bus when you have an unruly child on board?

Unload the student at the next stop.

Call school administrator or the police to remove the student.

Remove the student from the vehilce for the safety of the other children.

Stand up and speak respectfully to the offender, if a change of setting is needed, have the student move to a seat near you.

12 / 40

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

safety for yourself and other road users

to insure that you will achieve the best gas mileage

to save you money by preventing costly repairs

federal and state laws require you to inspect your vehicle

13 / 40

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

shock dampeners

none of the answers listed

lug bolt

spring mounts

14 / 40

Tires should should be replaced:

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

when there are broken valve stems

all of these answers are correct

when the tread separates

15 / 40

You must carry a gas mask with you when transporting:

Flammable materials

Liquid gas

Poison

Chlorine

16 / 40

You must not allow riders to stand:

Between the wheel wells.

Within two feet of any window.

Within two feet of an emergency exit.

In front of the standee line.

17 / 40

The trailer height is correct for connecting a converter dolly to a second trailer when:

the trailer will slightly lower when the converter dolly backed under it

the kingpin is resting behind the fifth wheel

the trailer will slightly rise when the converter dolly is backed under it

the top of the kingpin lines up with the locking jaws

18 / 40

Unless you_____you will feel the effects of a liquid surge.

all answers listed

gradually come to a stop

haul thick liquids

make turns carefully and slowly

19 / 40

When you have a major leak in the service line and put on the brake, the service air pressure will escape and cause the:

none of the ansers listed

the trailer emergency brakes to activate

the tractor spring brakes to activate

the trailer tank pressure to decrease

20 / 40

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

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

Stripped screw drive linkages and fluid drips.

Leaking, damaged, or missing wheelchairs.

Bent or dinged lift floor.

21 / 40

You should_____to make an emergency stop with air brakes when using the stab braking method.

apply a firm pressure to the brakes, release the brake pedal once the wheels lock and then apply pressure to the brakes onces the wheels start rolling again

apply pressure to the brake pedal until the wheels lock and then stay off of the pedal for as long as the wheels are locked

apply a full hand valve until you stop and press firmly on the brake pedal

rapidly and lightly pump the brake pedal

22 / 40

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

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

In order to observe the danger zones around the bus.

In order to clear up blind spots around the bus.

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

23 / 40

The designation RQ identifies the material's:

Regulatory quantity

Regulatory quotient

Reportable quantity

Reference quotient

24 / 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

25 / 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

26 / 40

The crack-the-whip effect is more likely to cause the front trailer to tip over.

false

trailers never tip

true

there is an equal chance for trailers to tip

27 / 40

With most hazardous materials, you may park within 5 feet of the road briefly, if your work requires it. The materials that are the exception and do not allow parking this close to the road are:

Liquids

Acids and poisons

Explosives A and B

Corrosives and oxidizers

28 / 40

Select the two reasons as to why special care is needed when driving a tank vehicle:

The danger of surge and the low center of gravity.

The chance of rollover and of spontaneous combustion.

The danger of surge and the high center of gravity.

None of the answers listed.

29 / 40

Start by___when coupling.

backing the converter dolly under the second trailer

having the second trailer against the dock

coupling the converter hook to the pintle tongue of the first trailer

coupling the tractor to the second trailer

30 / 40

What is most likely to occur when driving a set of doubles and a set of trailer wheels goes into a skid?

the rig will slide sideways but stay in a straight line

no matter how you turn the steering wheel, the rig will continue in a straight line

nothing will occur

there will be a trailer jackknife

31 / 40

Select the true statement in regards to managing the space to the sides:

high wind gusts will not cause any issues for doubles or triples

you should drive down the center of both lanes over the pavement markings

you should try to avoid driving next to others when possible

you should always keep your vehicle to the right side of the lane

32 / 40

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

in a closed position for the rear trailer and an open position for the front trailers

in an open position for the rear trailer and a closed position for the front trailer

in an open position

in a closed position

33 / 40

Your vehicle is going down a long hill and your brakes begin to fail. What should you do?

downshift

pump the brake pedal

put the gears in neutral

look for an escape ramp or an escape route

34 / 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 after product transfer, before you unhook the hose.

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

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

35 / 40

A safe haven is:

A place to stay once you have reported your company for illegal activity.

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

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.

36 / 40

When backing your vehicle, which of the following is NOT recommended

back and turn towards the driver's side

back as slow as possible

use the lowest reverse gear

back towards the right side

37 / 40

What is the reason that placards are used?

so hazmat is not mixed with food

to prevent terrorism

communicate the risk

it is the law

38 / 40

For emergency braking when driving a double trailer and having to use your brakes to avoid a collision is to:

use the engine brake

apply a firm pressure to the brake pedal and don’t let off

use stab or controlled braking

use just the trailer brakes

39 / 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.

Windshield fluid line

Exhaust system

Air coolant system

Fuel tank

40 / 40

When should you avoid using the parking brake?

while on an incline

when the air pressure is low

whenever you park

when the brakes are hot

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