CDL General Knowledge Test #3 | Practice Questions & Answers

General knowledge test #3
(english)

General Knowledge Test#3 (en)

1 / 50

There's a vehicle in front of you with a sign on it. The sign has a red triangle and an orange middle. What does this sign tell you?

The vehicle is an emergency response unit.

It is a delivery service vehicle.

It may be a slow-moving vehicle.

2 / 50

When is the right time to learn how to use a fire extinguisher?

Only when the fire happens.

Only when you are transporting flammable materials.

Before the fire happens.

3 / 50

How far should you stay behind another vehicle when driving on a highway?

3 seconds for every 35 feet of vehicle length

2 seconds for every 25 feet of vehicle length

1 second for each 10 feet of vehicle length

4 / 50

During the pre-trip inspection, where should you keep the ignition key?

Hanging from the rearview mirror.

Attached to the exterior door handle.

In your pocket.

5 / 50

How should you manage your speed when exiting a highway via an off-ramp that curves downhill with a heavy vehicle?

Slow down to 15 mph below the posted speed limit.

Slow down to a safe speed before the turn.

Apply the brakes firmly while in the curve.

6 / 50

What should you assume about the actions of a vehicle, pedestrian, or bicycle when you are passing them?

They will increase their speed.

They may be moving to your traffic lane.

They are aware of traffic signals.

7 / 50

On a road covered with snow, by how much should you reduce your driving speed?

1/2

1/3

1/4

8 / 50

What is emergency braking?

Slowing down for a routine stop

Responding to a hazard by slowing the vehicle.

Coasting to a stop without using brakes

9 / 50

Most skids:

Are due to heavy loads.

Are caused by going too fast or trying to stop too quickly.

Only occur during rainstorms.

10 / 50

Which of these statements about the handling of a steering wheel is true?

Keep your hands at the bottom of the wheel for better control.

If you do not hold a wheel with both hands it could pull away from you.

Hold the wheel with one hand at the top for more precision.

11 / 50

After steering onto the shoulder to avoid an accident, how should you return to the road?

Accelerate quickly to merge with traffic.

Wait for a tow truck to help return to the road.

Using mirrors and turn signals, turn sharply to get back to the road

12 / 50

What is correct regarding the conduct of a pre-trip inspection?

Inspect the tire tread with a flashlight at night.

Check the engine oil while the engine is running.

If you need to tilt a cab, secure loose things so that they could not fall or break anything.

13 / 50

While driving on a level road in a vehicle with hydraulic brakes, you press the brake pedal and it sinks to the floor. Which of the following statements is true?

Turning off the engine will increase brake pressure.

Pumping the brake pedal may bring the pressure up so you can stop the vehicle.

Adding more brake fluid will immediately fix the problem.

14 / 50

How should the brake pedal be applied when descending a steep grade?

Steady, heavy pressure until the bottom.

Release the brake when you are 5 MPH below your safe speed, then let your speed come back up to your safe speed and repeat again, (bring speed down 5 MPH below your safe speed.)

Apply brakes only once halfway down the hill.

15 / 50

In preparation for winter conditions, which vehicle system requires extra attention during inspection?

Steering.

Exhaust.

Transmission

16 / 50

If you must drive through deep puddles or flowing water, what action can help keep your brakes functional?

Increasing your speed before entering the water.

Gently putting on the brakes while driving through the water.

Using the air dryer frequently before entering the water.

17 / 50

Hydroplaning:

Is completely avoidable by turning the steering wheel rapidly.

Happens only at low speeds.

Is more likely if tire pressure is low.

18 / 50

While driving at a slow speed, it's advised to look ahead of your vehicle by approximately _____ .

5 blocks

1 block

3 blocks

19 / 50

The effectiveness of an engine brake is maximized when the engine is at _____ RPM and the vehicle is in a _____ gear.

Below, higher

Above, lower

Near, lower

20 / 50

What should you NOT check during your walk-around inspection?

Hydraulic brake cylinders leaks.

Condition of hoses.

Brake adjustment.

21 / 50

Which indicator is not typically associated with tire failure?

Vehicle's fishtail.

Steering wheel twisting.

Cold steering.

22 / 50

What term describes the total weight of the truck, trailer, and cargo together?

Total vehicle load

Combined vehicle mass

Gross combination weight

23 / 50

Which of the following is a correct practice about vehicle tires?

Tires should be inflated to the maximum pressure listed on the sidewall to pass inspection.

Tread wear indicators are only needed on the front tires.

Tires of mismatched sizes should not be used together in the same vehicle.

24 / 50

In what way does a vehicle's load impact its required stopping distance?

The size of the tires, not the weight, dictates stopping distance.

The color of the vehicle determines how quickly it can stop.

Empty trucks take longer to stop than if loaded, but this is not the normal case for buses.

25 / 50

According to the driver's manual, which action is NOT advised when passing another vehicle?

Assume that another driver does not see you.

At night, turn on your high beams before you start to pass and leave them on until you have completely passed the vehicle.

Lightly tap your horn.

26 / 50

When is it necessary to be secured by a seat belt in a vehicle in motion?

Only if the vehicle has airbags.

All the time.

Only during bad weather.

27 / 50

What guideline must be followed when transporting hazardous materials?

Containers must be painted green for easy identification.

Containers should be marked with four-inch diamond-shaped hazard labels.

Containers can be transported without any labels if they are inside a box.

28 / 50

To prevent cargo from shifting, you should use at least one tie-down for every feet of cargo.

29 / 50

What is the advisable speed for a commercial vehicle when taking freeway exits to ensure safety?

Below the posted speed limit.

As fast as the vehicle ahead.

Twice the posted speed limit.

30 / 50

You should position your vehicle for parking so that _______ .

Park diagonally across multiple spots.

Park with your back to the main road.

You can pull forward when you leave.

31 / 50

What is the initial step you should take if your brakes stop working while descending a slope?

Flash your lights to signal for help.

Turn off your engine immediately.

Look outside your vehicle for another means of slowing you.

32 / 50

What components make up the total stopping distance for trucks and buses?

Alert distance, processing distance, and stopping distance

Focus distance, decision distance, and halting distance

Perception distance, reaction distance, and braking distance.

33 / 50

Retarders:

Reduce the overall speed of your vehicle automatically.

Increase fuel efficiency significantly.

Can cause the drive wheels to skid when they have poor traction.

34 / 50

Which of the following is not recognized as a type of retarder?

Hydraulic

Robotic

Electric

35 / 50

What should be kept in mind when you must drive off the road to avoid a hazard or emergency?

It is less dangerous to drive onto the shoulders than to cause a collision.

You should only leave the road at high speeds to avoid accidents.

You can easily control your vehicle on any shoulder surface.

36 / 50

What potential issues could arise from loading cargo primarily at the rear of a trailer?

Increased fuel consumption

Poor traction on drive wheels.

Uneven tire wear

37 / 50

If a straight vehicle without a trailer experiences a front-wheel skid, it will ______ .

Stop immediately.

Turn in the opposite direction of the steering wheel.

Go straight ahead even if the steering wheel is turned.

38 / 50

A hazard:

Can be safely ignored.

Is any road condition or other road user that is possible danger.

Is always a vehicle malfunction.

39 / 50

What is not necessary for starting a bus on a level surface with good traction?

Slow acceleration.

A tire check.

Parking brakes.

40 / 50

What changes occur to the tar on road surfaces during hot weather?

It bleeds making the road surface slippery.

It hardens, increasing tire grip.

It evaporates, leaving gaps in the road.

41 / 50

What is not essential for drivers to know when seeking a hazardous materials endorsement?

Basic chemistry.

Which products can be loaded together.

When to use the placards.

42 / 50

Which set of lights is impossible to inspect simultaneously?

Turn signals, brake lights, and four-way flashers.

Turn signals, tail lights, and clearance lights.

Brake lights, headlight high beams, and parking lights

43 / 50

What correct action should be taken in the event of a vehicle fire?

A burning tire should be cooled with water.

Use sand to put out an engine fire.

Throw flour on the fire to put it out.

44 / 50

When you , you should ensure that your emergency four-way flashers are turned on.

Drive in heavy rain.

Stop at a green light.

Park on the side of the road.

45 / 50

How should you manage your speed when using a curved highway ramp for exiting or entering a highway?

Slow down to at least 50% of the posted speed limit.

Maintain a speed 5-10 mph under the posted speed limit.

Brake sharply to reduce speed by 20 mph below the limit.

46 / 50

It is important to keep signaling throughout your turn because ______ :

Most vehicle have self-canceling signals.

It helps other drivers understand your actions better.

You need both hands on the wheel to turn safely.

47 / 50

How many red reflective triangles must you have with you?

48 / 50

Which of these statements regarding the process of backing up a heavy vehicle is true?

You should avoid backing whenever you can.

Use your mirrors to guide you while backing up, ignoring the outside surroundings.

Backing up can be done quickly to save time.

49 / 50

Which of these statements regarding the technique of downshifting is correct?

Downshift only when the vehicle is moving at its top speed.

When you downshift for a curve, you should do so before you enter the curve.

Downshift without using the clutch at all times.

50 / 50

What is crucial to remember about performing emergency braking?

Slowing down gradually will always stop the vehicle faster.

If the wheels are skidding, you cannot control your vehicle.

Pushing the accelerator will help regain control faster.

Your score is

The average score is 83%

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What is the CDL General Knowledge Test?

The CDL General Knowledge test is a written exam that covers a wide range of topics related to safe vehicle operation, traffic laws, and general knowledge that commercial drivers need to know. The test is designed to ensure that drivers have a basic understanding of the rules of the road and the skills necessary to operate a commercial vehicle safely.

Who Needs to Take the CDL General Knowledge Test?

Anyone who wants to obtain a CDL is required to take and pass the General Knowledge test. This includes drivers who want to operate:

Tractor-trailers
Buses
Tanker trucks
Vehicles carrying hazardous materials
Other commercial vehicles

Why are Practice Tests Important?

Practicing for the CDL General Knowledge test is crucial for success. Here’s why:

Familiarization: Practice tests help you become familiar with the format of the real exam, the types of questions you’ll encounter, and the time constraints.
Knowledge Assessment: They allow you to assess your current knowledge and identify areas where you need to focus your studies.
Confidence Building: Taking practice tests and seeing your progress can boost your confidence and reduce test anxiety.
Improved Performance: Studies have shown that students who use practice tests perform significantly better on exams.

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General Knowledge Test #3(en)

General knowledge test #3
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General knowledge test #1(english)

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What is the CDL General Knowledge Test?

Who Needs to Take the CDL General Knowledge Test?

Why are Practice Tests Important?

General Knowledge Test #3(en)

General knowledge test #3(english)

General knowledge test #1(english)

General knowledge test #2(english)

General knowledge test #4(english)

What is the CDL General Knowledge Test?

Who Needs to Take the CDL General Knowledge Test?

Why are Practice Tests Important?

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General knowledge test #3
(english)