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Connecticut CDL DMV Knowledge Test Class B 2

Take 4 practice tests for CDL is the best way to prepare for your Connecticut DMV exam is by taking our free practice tests. The following question are from real Connecticut DMV practice test. More than 95% people pass a DMV exam when practice at DMV Practice Test.

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1. To make a stop in a vehicle equipped with air brakes, the driver should:
Press the brake pedal down.
Lift the brake pedal up.
Pull out the air brake knob.

To make a normal stop in a vehicle that is equipped with air brakes, you should simply press the brake pedal down.

2. On a leaf spring, the leaves:
May be broken.
Are not required.
Should not be broken.
Should shift.

When inspecting a vehicle's suspension, you should look for broken or missing leaves in the leaf springs. Any defect of this kind is dangerous. If one-fourth or more of the leaves are missing from any leaf spring, the vehicle must be put out-of-service.

3. Black ice is:
Usually thick.
Usually thin.
Not a hazard when driving.

Black ice is a layer of ice that is thin and clear enough for the road to be visible through it. The surface will look like a wet road. Always be alert to black ice if the road looks wet when the temperature is below freezing.

4. If driving so slowly that you could impede other drivers, you should:
Drive in the left lane.
Drive while using your four-way flashers.
Drive without using any lights.

If you must drive so slowly that you will impede the flow of traffic, you should turn on your four-way flashers to alert drivers behind you (as long as local laws allow the use of flashers).

5. What tells you how much pressure is in your vehicle's air tanks?
The supply pressure gauge
The ABS malfunction lamp
The tractor protection valve

A vehicle that is equipped with air brakes must also be equipped with a supply pressure gauge. This gauge tells the driver how much air pressure is in each of the vehicle's air tanks.

6. Which of the following is not another name for convex mirrors?
Fisheye mirrors
Spot mirrors
Bug-eye mirrors
Flat side mirrors

Convex mirrors are also known as "fisheye", "spot", or "bug-eye" mirrors.

7. When entering a curve, you should:
Shift into neutral.
Use the shoulder.

You should always slow down to a safe speed and shift into a lower gear before entering a curve.

8. Which of the following is not part of a vehicle’s air brake system?
Air gauges
Low pressure warning device
Air filter

Components of an air brake system include an air compressor, an air compressor governor, air storage tanks, air tank drains, an alcohol evaporator, a safety valve, a brake pedal, foundation brakes, supply pressure gauges, an application pressure gauge, a low air pressure warning signal, a stop light switch, a front brake limiting valve (on some older vehicles), spring brakes, and parking brake controls.

9. To avoid becoming an aggressive driver, you should:
Plan trips without allocating extra time for traffic.
Drive slowly in the left lane.
Not make gestures to other drivers.

To avoid becoming an aggressive driver, begin a trip with realistic expectations of how long the trip will take, allowing extra time for traffic delays. Do not tailgate other vehicles. To avoid upsetting other drivers, do not drive slowly in the left lane and do not gesture at the drivers (even in seemingly minor ways, like shaking your head).

10. During a static leakage test, what is the maximum leakage rate that is safe for a double combination vehicle?
3 psi in one minute.
6 psi in one minute.
8 psi in one minute.

When performing a static leakage test on a double combination vehicle with air brakes, the leakage rate should be no more than 3 psi in one minute. If the air leaks from the air brake system at a quicker rate, the vehicle should not be driven because something likely needs to be repaired.

11. Both systems in a dual air brake systems share:
Air tanks.
Air lines.
An air compressor.

Both systems in a dual air brake system share a single air compressor. If the air compressor is damaged, neither system will be able to operate properly.

12. Most heavy-duty vehicles use:
Mono air brake systems.
Dual air brake systems.
Triple air brake systems.
Quadruple air brake systems.

Most heavy-duty vehicles use dual air brake systems. A dual system has two separate air brake systems with a single set of controls.

13. If convicted of speeding while operating your personal automobile in a different jurisdiction, you should:
Not worry about your CDL being affected.
Notify the motor vehicle licensing agency.
Have your CDL suspended.

If you are convicted of any kind of traffic violation, in any type of vehicle, you must notify your employer within 30 days. You must also inform your motor vehicle licensing agency of the violation within 30 days if the conviction happened in another jurisdiction. This rule does not apply to parking infractions.

14. Before beginning to drive downhill, you should:
Take your vehicle out of gear.
Shift into a lower gear.
Move into the left lane.

To avoid overusing your brakes, you should always shift into a lower gear before starting down a hill.

15. If a vehicle is equipped with power steering, the hoses should be checked:
For leaks.
To ensure that they are still clear.
To ensure that they are connected to the battery.
To ensure that they contain the proper amount of play.

When inspecting a vehicle with power steering, you should inspect the hoses, pumps, and fluid levels. Specifically check the hoses for leaks.

16. When it is difficult for others to see your vehicle, such as at dawn or dusk, you can help other drivers by:
Keeping your lights off.
Turning your lights on.
Driving on the shoulder.
Waving an arm out the window.

At times when visibility is low, you should turn your headlights on to the low beam setting. If you are having a difficult time seeing others, they are probably having a difficult time seeing you.

17. If an aggressive driver is involved in a crash on the road ahead, you should:
Stop and confront the driver.
Stop a safe distance from the crash scene, wait for police to arrive, and tell them of the driver's behavior.
Block the driver in with your vehicle.

If you see a crash involving an aggressive driver, you should stop a safe distance from the crash scene, wait for police to arrive, and inform them of the aggressive behavior you witnessed.

18. How does doubling your speed from 20 mph to 40 mph affect your vehicle's braking distance?
It stays about the same.
It increases slightly.
It doubles.
It quadruples.

Increasing your vehicle's speed will increase your vehicle's striking power and braking distance. Doubling your vehicle's speed from 20 to 40 mph will multiply its braking distance by four.

19. When experiencing cold weather, be sure to check your vehicle's alcohol evaporator:
Every three hours.
Every day.
Every other week.

An alcohol evaporator can help prevent ice from building up in an air brake system. In cold weather, the evaporator should be checked and refilled every day.

20. If a vehicle begins to hydroplane, the driver should:
Release the accelerator and push in the clutch.
Pull in the clutch and brake.

If your vehicle begins to hydroplane, you can regain control by releasing the accelerator and pushing in the clutch.

21. What happens if you don’t pass the air brakes endorsement test?
You won’t be permitted to drive a vehicle with air brakes.
Your CDL will include an air brake endorsement marked with an asterisk.
Your CDL will be invalid.

If you do not take or pass the air brakes test, you will be restricted to operating vehicles without air brakes.

22. If driving a vehicle with a manual transmission, you can prevent your vehicle from rolling backward when starting from a stop by:
Partly engaging the clutch before removing your foot from the brake pedal.
Placing the vehicle in reverse before moving forward.
Fully engaging the clutch before removing your foot from the brake pedal.
Placing the vehicle in neutral before moving forward.

To prevent rolling backward when starting from a stop, you should partly engage the clutch before removing your foot from the brake. Apply the parking brake whenever necessary to prevent your vehicle from rolling back.

23. Eating while driving:
Is a good way to maximize time.
Is encouraged on long trips.
Creates a distraction for the driver.
Is mandatory so cargo is not left unsupervised.

To reduce the chances of driving distracted, you should avoid eating, drinking, or smoking while driving. Anything that diverts attention from the task of driving is a distraction.

24. Rough acceleration:
Can damage parts of a vehicle.
Is necessary to warm up parts of a vehicle.
Is encouraged to improve a vehicle's gas mileage.

Always speed up smoothly and gradually so that your vehicle does not jerk. Rough acceleration can cause mechanical damage.

25. Distracted driving:
Is not a concern.
Only happens when drivers are physically doing something, like using a cell phone.
Can occur due to mental activities, such as daydreaming.
Is encouraged on uncrowded roads.

Mental distractions can be just as dangerous as physical ones. It is possible for a person to look right at a hazard on the road but fail to notice it because their thoughts are occupied by something else.

26. Bracing is used to:
Make items stand taller in a trailer.
Prevent items from moving in a trailer.
Make it easier to unload items from a trailer.

Blocking and bracing are used to prevent cargo from shifting in transit. Blocking is used in the front, in the back, and on the sides of a piece of cargo to prevent movement. Bracing prevents movement by reaching from the upper portion of a piece of cargo to the floor and sides of the cargo compartment.

27. When leaving your vehicle, you should:
Apply the parking brake.
Apply the air brakes.
Not apply any brake.
Disconnect the trailer.

You should always apply the parking brake when leaving your vehicle.

28. A vehicle equipped with an Anti-Lock Braking System (ABS) can be identified by:
A sticker on the control panel.
A yellow lamp on the instrument panel.
The letters "ABS" on the brake pedal.
A metal plate on the inside of the driver’s side door.

You can tell that your vehicle is equipped with an Anti-Lock Braking System (ABS) if it has a yellow ABS malfunction lamp on the instrument panel.

29. When a construction worker is close to the road, you should:
Increase your speed.
Decrease your speed.
Not drive in any lane.
Wait to proceed until the construction is complete.

In construction zones, do not exceed the posted safe sped limit. Slow down even more when workers are near the roadway.

30. When transporting a load, the cargo should be inspected:
Only at the beginning of a drive.
Only after driving a long distance.
After every break.

Cargo and its securing devices must be inspected before starting a trip. After beginning a trip, the driver should check the load and securing devices within the first 50 miles on the road, every three hours or 150 miles traveled, and after every break.

31. People working on a disabled vehicle:
Are probably aware of the roadway.
May be distracted by the repair and not pay attention to the roadway.
Are exempt from traffic laws.

Be cautious when driving near people who are working on a disabled vehicle on the side of the road. They may be focused on the repair and not paying attention to nearby traffic.

32. What is removed when an air tank is drained?
Water and oil
Liquid cleaners

In an air brake system, air tanks have drains to remove accumulations of water and compressor oil. Allowing water and oil to accumulate in the system could cause damage to the brakes.

33. Some air brake systems introduce alcohol into the system to:
Make the brakes work without squeaking.
Prevent ice from forming in the brake system.
Prevent people from breathing the air from the system.

Some air brake systems contain an alcohol evaporator. An evaporator introduces alcohol into the system to help inhibit the formation of ice in cold weather.

34. If you are disqualified from driving:
Your employer will be notified by the state.
You must notify your employer within two business days.
You must notify your employer within a month.

You must notify your employer within two business days if your license is suspended, revoked, or canceled, or if you are otherwise disqualified from driving.

35. On a truck with air brakes, the braking system’s air compressor:
Pumps air into the air storage tanks.
Fills the tires.
Moves air to the back of the truck.
Cleans the brakes.

In an air brake system, the air compressor pumps air into the air storage tanks. The air compressor is controlled by the air compressor governor.

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