CDL General Knowledge Test #4 | Practice Questions & Answers

General knowledge test #4
(english)

General Knowledge Test#4 (en)

1 / 50

When descending a long, steep grade in a truck with a manual transmission, which gear should you select?

A lower gear than you would use to climb the hill.

Neutral gear

The gear you use on flat terrain.

2 / 50

What is likely to happen if you are convicted for the first time of DUI while driving a commercial vehicle?

Mandatory defensive driving course completion

At least one-year suspension of your CDL.

Community service for 50 hours

3 / 50

What actions are required if you find yourself parked on the roadside at night?

Turn on your four-way-emergency flashers to warn others.

Activate your vehicle's spotlight.

Keep your headlights on full beam.

4 / 50

What factors make tourists potential road hazards?

They may move slowly, unexpectedly change lanes or stop.

They often use maps while driving.

They might take photos while driving.

5 / 50

What is the best response when drivers follow too closely behind your large vehicle during poor weather conditions?

Increase your following distance.

Switch lanes to let the tailgater pass.

Turn on your hazard lights to encourage them to keep distance.

6 / 50

Which statement about handling different types of cargo is true?

Unstable load such as hanging meat or livestock can require extra caution on curves.

Dry goods do not need to be secured as they are not at risk of movement.

Fragile items can be stacked high as long as they are wrapped in plastic.

7 / 50

Which of these facts about using brakes is correct?

The faster or heavier the vehicle is, the more heat the brakes have to absorb to stop it.

Brakes work best when they are cold and dry.

Brake fade is not caused by heat.

8 / 50

When dealing with a coolant container that is part of a pressurized system, which of the following is true?

The system self-regulates and requires no coolant top-ups.

You can check the coolant level of a hot engine.

Coolant levels in these systems can be visually inspected without any tools.

9 / 50

After avoiding a collision by moving onto the right shoulder and continuing to drive at 40 mph, how should you safely return to the main part of the road?

If the shoulder is clear, stay on the right until your vehicle comes to a stop then move back into the pavement when it is safe.

Accelerate to match the speed of traffic before merging back onto the road.

Continue at 40 mph and merge directly into traffic.

10 / 50

High beams should be:

Dimmed at the time when you get within 100 feet of another vehicle.

Used when it is safe and legal to do so.

Activated in heavy traffic.

11 / 50

What is correct about the air pressure in tires?

Tire pressure doesn't matter as long as the tire looks full.

Cold tires give the most accurate pressure reading.

Air pressure in tires increases with the temperature.

12 / 50

What should you do when you begin to drive up a hill from a stopped position?

Press the accelerator hard while the brakes are still engaged.

Shift into a higher gear before starting up the hill.

Release the parking brakes as you apply engine power.

13 / 50

Which component does not add extra gears to certain trucks?

Auxiliary transmission

Automatic transmission.

Multi-speed rear axles.

14 / 50

What should you do before making a turn that requires entering the opposite lane?

Watch for an oncoming traffic.

Back to allow the oncoming traffic to pass.

Signal to oncoming traffic and proceed slowly.

15 / 50

When you drive in an area where construction work is happening, you should:

Watch for sharp pavement drop off.

Increase your radio volume to stay alert.

Ignore traffic signs and signals.

16 / 50

Is it necessary to regularly check the adjustment of your brakes?

No, because the other brakes will make up for the air brakes when they are out of adjustment.

Yes, because the brakes can get out of adjustment when they are used a lot.

Only if the vehicle fails to stop properly.

17 / 50

What is the best course of action when you need to steer quickly to avoid a crash?

Close your eyes and steer in the direction you think is safest.

Turn off the engine while steering.

Don't turn any more than needed to clear what is in your way.

18 / 50

What practices should you follow while driving at night?

Adjust your speed to keep your stopping distance within your sight distance.

Turn off your headlights to reduce glare.

Use high beams in all situations to see further.

19 / 50

What should you remember about using mirrors while driving?

Mirrors automatically adjust to reduce glare at night.

There are blind spots that your mirror cannot show.

Mirrors can display the exact speed of the vehicle behind you.

20 / 50

Convex (curved) mirrors:

They show a wider area than flat mirrors show.

They reduce the clarity of objects behind you.

They only show what's directly behind you.

21 / 50

Which type of vehicle will find it most challenging to stay in its lane during strong wind conditions?

A double with an empty trailer.

A tractor pulling a loaded flatbed trailer.

A triple axle vehicle with cargo.

22 / 50

What is the correct definition of emergency braking?

Slowing down for a yellow traffic light.

Responding to a hazard by slowing the vehicle.

Using the turn signal while braking lightly

23 / 50

Managing the space [to the] ______ your vehicle is crucial.

To the side of

Front of

Back of

24 / 50

You should be aware that containerized loads ______ .

Must be placed on flatbed trailers only.

Generally are used when freight is carried part way by rail or ship.

Do not need to be secured since they are in containers.

25 / 50

What's the proper way to handle a skid caused by accelerating too quickly with the drive wheels?

Turn the steering wheel rapidly left and right.

Stop accelerating.

Gently tap the brakes.

26 / 50

The bridge formula:

Allows for unlimited axle weight regardless of distance between axles.

Calculates the maximum vehicle height based on axle distance

Permits less maximum axle weight for axles that are closer together.

27 / 50

Why does a vehicle go faster when moving downhill?

The air becomes thinner.

Lack of traction.

Gravity.

28 / 50

You're driving in an area with limited streetlights, and your headlights aren't giving you enough visibility. What strategy could improve your situation?

Apply a layer of reflective tape on the exterior of your vehicle.

Use your high beams when legal and keep your interior lights off.

Install brighter bulbs in your headlights.

29 / 50

Why is it necessary to change gears the right way?

To make the ride smoother for passengers.

To keep control of the vehicle.

To save fuel.

30 / 50

Drivers of trucks and tractor-trailers must verify that their load is securely fastened how many miles into their trip?

31 / 50

What is the best reaction when, on a road with only two lanes, you see another car coming towards you in your lane?

Flash your headlights rapidly.

Steer to the right.

Hard braking.

32 / 50

If your vehicle starts burning while you're driving, what should you do?

Use water immediately to douse the flames.

Park in an open area.

Drive towards the nearest body of water.

33 / 50

What should you NOT do if a car suddenly cuts in front of you, creating a hazard?

Slow down to prevent a crash.

Honk your horn and stay close behind the car.

Signal and change lanes to avoid hazard.

34 / 50

When inspecting the vehicle, checking of ____ will NOT stop a fire from happening.

Cargo ventilation.

Electrical system isolation.

Battery fluid level.

35 / 50

What is the best course of action for drivers when confronted with dense fog?

Increase your speed to get out of the fog faster.

Turn on your loud music to alert other drivers.

Park the truck until the fog disappears.

36 / 50

Which item should NOT be checked during a pre-trip inspection?

Amount of fuel in a vehicle.

Cargo securement.

Whether all lights are working.

37 / 50

Which of the following is a type of jackknifing?

Both trailer and tractor.

Tractor.

Trailer.

38 / 50

Communication means:

To communicate your intention to other motorists.

To listen to music loudly while driving

Using hand signals to play a game

39 / 50

Why is it important to check your truck or bus before driving?

To save fuel.

Safety.

To improve driving skills.

40 / 50

When should you stop driving?

Whenever you become sleepy.

When you've finished your coffee.

After 5 hours.

41 / 50

When driving a commercial vehicle, you need to pay extra attention to keep it in the middle of your lane because commercial vehicles:

Need more fuel than smaller vehicles

Have smaller mirrors, making it hard to see.

Are often wider than other vehicles.

42 / 50

What is the reason given in the driver's manual for advising against frequent use of your horn?

Using the horn can drain your vehicle's battery.

It can startle other drivers.

To avoid waking up nearby residents

43 / 50

How many miles into your journey must you conduct an inspection of your truck?

100

150

44 / 50

What should you do if you are unsure whether your vehicle can go under an object because of its height?

Check the weather forecast for wind conditions that might affect clearance.

Drive closer to the center of the road to avoid the object.

Find another route that will not require driving under the object.

45 / 50

You should not use stab braking on vehicles with:

Manual transmission systems

Air conditioning systems

Anti-lock brakes.

46 / 50

What is true regarding the technique of double clutching and shifting?

Double clutching should only be used with a heavy load.

Double clutching should not be used when the road is slippery.

You can use the tachometer to tell you when to shift.

47 / 50

Which of these statements about the risk factors for a vehicle fire is correct?

Steel parts of the vehicle are more likely to catch fire than other parts.

Brake fluid is non-flammable.

Poor cargo ventilation may cause cargo to catch on fire.

48 / 50

What emergency tools do you always need to have in your car?

Warning devices for parking vehicle.

Tire repair kit.

Spare fuel canisters

49 / 50

What does Gross Vehicle Weight (GVW) stand for?

Weight of the vehicle's engine only.

Total weight of a single vehicle plus its load.

Weight of the vehicle's tires only.

50 / 50

At what Blood Alcohol Concentration (BAC) level is a commercial driver considered legally intoxicated while operating a commercial vehicle?

0.1

0.01

0.04

Your score is

The average score is 86%

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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 #4(en)

General knowledge test #4
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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 #4(en)

General knowledge test #4(english)

General knowledge test #1(english)

General knowledge test #2(english)

General knowledge test #3(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 #4
(english)