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CDL Class > General Knowledge practice Test-1-6 > Flashcards

General Knowledge practice Test-1-6 Flashcards

1
Q

Which of these is not a type of Retarder?

A

Robotic

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2
Q

When approaching a bridge on a 2 lane road, you should:

A

Check the weight limit of the bridge

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3
Q

A vehicle is loaded with very little weight on the drive axle. What may happen?

A

Poor traction

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4
Q

Turn signals should be used:

A

At least 100 feet before turning or changing lanes

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5
Q

When you are driving on a snow packed road, you should reduce your speed by:

A

1/2

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6
Q

You should signal continuously while turning because:

A

You need both hands on the wheel to turn safely

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7
Q

You must keep the papers related to hazardous material you are hauling:

A

In the pouch of the drivers door

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8
Q

You will be placed out of service for 24 hours if your blood alcohol level is at least:

A

Any detectable amount

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9
Q

Which of these statements is true about the use of an engine brake?

A

The use of engine brakes on a downgrade adds to the braking effect of the engine

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10
Q

After starting the engine:

A

The oil pressure gage should be read right to normal

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11
Q

If you do not have a CB radio, what procedure should you do at an accident scene?

A

Protect the area

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12
Q

Which of these rigs have more chance to offtrack while turning?

A

Tractor with 45 foot trailer

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13
Q

Which of these about alcohol is not true?

A

A drinker can control how fast his body absorbs alcohol

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14
Q

Which of these should you NOT do in an emergency situation?

A

It is not important how you brake in an emergency situation

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15
Q

A car suddenly cuts in front of you, creating a hazard. Which of these actions should you NOT take?

A

Slow down to prevent a crash

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16
Q

During the vehicle inspection, checking of___ __will NOT prevent a fire

A

Battery fluid level

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17
Q

Merging onto a road is safest if you:

A

Wait for a large enough gap in traffic to enter the road

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18
Q

Which of these is NOT a danger of rough acceleration?

A

Tire damage

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19
Q

Which of these lights cannot be checked at the same time?

A

Turn signals, brake lights, 4 way flashers

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20
Q

You are inspecting hydraulic brakes. You should pump the brake pedal 3 times then apply firm pressure to the pedal for 5 seconds. If the brakes are working properly, the pedal should:

A

Not move

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21
Q

How does the weight of a vehicle affect stopping distance?

A

Empty trucks take longer to stop than loaded ones, but this is not normally the case for buses

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22
Q

In bad weather, many car drivers tailgate large vehicles. What should you do?

A

Speed up to distance yourself from the tailgater

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23
Q

Which may be a sign of tire failure?

A

Vibration

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24
Q

Which of these vehicles will have the longest stopping distance?

A

Bobtail tractor

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25
Q

How many red reflective triangles are you required to carry?

A

3

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26
Q

Which of these statements about marking a stopped vehicle is true?

A

If a hill or curve stops drivers behind you from seeing your vehicle within 500 feet, the rear reflective triangle should be moved down

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27
Q

Which of these best describes how you should use the brake pedal on a steep downhill grade?

A

Light steady pressure

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28
Q

Which of these is true about radiator shudders and the winterfront during winter driving?

A

Ice should be removed from the radiator shudder

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29
Q

Which of these statements about acceleration is true?

A

Rough acceleration can cause mechanical damage

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30
Q

Which is NOT true about bad weather and driving conditions?

A

The road is more slippery when the rain continues than when it begins

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31
Q

Which of these statements about vehicle fire hazards is true?

A

a) Poor cargo ventilation can cause cargo to catch on fire

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32
Q

Which of these is true about driving in a tunnel?

A

There may be strong winds when exiting

33
Q

Your vehicle will be put out of service if ___ or more leaves in any leaf spring are missing:

A

1/4

34
Q

You must stop on a hill or curve on a 2 lane, 2 way road. How far back should you place your reflective triangles?

A

Within 500 feet behind you

35
Q

How do you correct a rear wheel acceleration skid?

A

Stop accelerating

36
Q

Which of these is a good thing to do when steering to avoid a crash?

A

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

37
Q

Retarders:

A

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

38
Q

You may hang up on railroad tracks if:

A

The tracks have a steep approach

39
Q

What should you do if you are unsure if you have enough overhead clearance?

A

Find another route that will not require driving under the object

40
Q

You are driving on a straight, level highway at 50 MPH. There are no vehicles in front of you. A tire suddenly blows out on your vehicle. What should you do first?

A

Stay off the brake until the vehicle has slowed down

41
Q

Which of these statements about engine overheating is true?

A

You should never remove the radiator cap on a pressurized system until the system is cool

42
Q

If a straight truck(no trailer) goes into a skid, it will:

A

Slide sideways and spin out

43
Q

If you need to leave the road in a traffic emergency, you should:

A

Avoid braking until your speed has dropped to about 20 MPH

44
Q

The purpose of a retarder is to:

A

Help slow the vehicle while driving and reduce brake wear

45
Q

You are travelling down a long, steep hill. Your brakes get so hot that they fail. What should you do?

A

Both of the above

46
Q

Which of these is true about hazardous materials?

A

All hazardous materials present a danger to health and safety

47
Q

What is the best advice for a driver when there is a heavy fog?

A

Park the truck until the fog disappears

48
Q

Which of these statements about a pre-trip inspection is true?

A

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

49
Q

Sometimes you need to leave the road to avoid a hazard or emergency. When you do so, you should keep in mind that:

A

You might not be able to re-enter the road because of the gravel used on roads

50
Q

What will happen if the air lines are crossed when you hook up to an old trailer?

A

If the trailer has no spring brakes, you could drive away but you wouldn’t have trailer brakes

51
Q

There are two things a driver can do to prevent a rollover. They are (1) keep the cargo as close to the ground as possible and (2):

A

Go slow around turns

52
Q

Which of these about alcohol is not true?

A

A drinker can control how fast his body absorbs alcohol

53
Q

Which of the following is NOT a characteristic of a front tire failure?

A

Vehicle will fishtail

54
Q

Which of these best describes how you should use the brake pedal on a steep downhill grade?

A

Light steady pressure

55
Q

Which of these is not a brake check you normally do during your walk around inspection?

A

Brake adjustment

56
Q

Which is NOT true about bad weather and driving conditions?

A

The road is more slippery when the rain continues than when it begins

57
Q

Controlled braking is:

A

b) Applying the brakes hard without locking them up

58
Q

To avoid an accident, you moved to the shoulder. To return to the road:

A

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

59
Q

When you are starting to move up a hill from a stop:

A

Release the parking brakes as you apply engine power

60
Q

Which of these is NOT a danger when forcing an automatic transmission into a lower gear at high speed?

A

A loss of engine braking effect

61
Q

Which of these statements about double clutching and shifting is true?

A

You can use the tachometer to tell you when to shift

62
Q

You are starting your vehicle from a stop. As you apply power, the drive wheels start to spin. You should:

A

Take your foot off the accelerator

63
Q

Your vehicle is in a traffic emergency and may collide with another vehicle if you do not take action. Which of these is a good rule to remember at such a time?

A

You can almost always turn to miss an obstacle more quickly than you can stop

64
Q

Hydroplaning

A

Is more likely if tire pressure is low

65
Q

Your vehicle has hydraulic brakes. While traveling on a level road, you press the brake pedal and find that it goes to the floor. Which of these statements is true?

A

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

66
Q

When driving at night, you should use your low beams when an oncoming vehicle is within how many feet?

A

500

67
Q

You must stop on a hill or curve on a 2 lane, 2 way road. How far back should you place your reflective triangles?

A

Within 500 feet behind you

68
Q

Which of these is a good thing to do when steering to avoid a crash?

A

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

69
Q

According to the drivers manual, why should you limit the use of your horn

A

a) It can startle other drivers

70
Q

What should you do if you are unsure if you have enough overhead clearance?

A

Find another route that will not require driving under the object

71
Q

You are driving on a straight, level highway at 50 MPH. There are no vehicles in front of you. A tire suddenly blows out on your vehicle. What should you do first?

A

Stay off the brake until the vehicle has slowed down

72
Q

You are driving a heavy vehicle with a manual transmission. You have to stop on the shoulder while driving on an uphill grade. Which of these is a good rule to follow when putting it back in motion on the uphill grade?

A

b) Use the parking brake to hold the vehicle in place until the clutch engages

73
Q

If you need to leave the road in a traffic emergency, you should:

A

Avoid braking until your speed has dropped to about 20 MPH

74
Q

You are travelling down a long, steep hill. Your brakes get so hot that they fail. What should you do?

A

Look for an escape ramp or escape route

75
Q

What should you do if you see a hazard in the roadway ahead of you?

A

Use your 4 way flashers or brake lights to warn others

76
Q

Your brakes can get wet when driving through heavy rain. What effect can this cause to your brakes?

A

Trailer jackknife

77
Q

Which of these is true about emergency or evasive action?

A

In order to turn quickly, you must have a firm grip on the steering wheel

78
Q

What is the best advice for a driver when there is a heavy fog?

A

Park the truck until the fog disappears

79
Q

Sometimes you need to leave the road to avoid a hazard or emergency. When you do so, you should keep in mind that:

A

It is less dangerous to drive on the shoulder than to cause a collision

CDL Class (12 decks)

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