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cdl General knowledge
100問 • 1年前
  • ユーザ名非公開
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    問題一覧

  • 1

    As the blood alcohol concentration (BAC) goes up, what happen ?

    Judgment and self control are affected

  • 2

    Implied consent means?

    you given consent to be tested for alcohol in your blood

  • 3

    The total weight of the power unit, the trailer, and the cargo is called?

    Gross combination weight

  • 4

    If you do not have a CB radio, what is the 1st thing you should do at an accident scene?

    Protect the area

  • 5

    Which of these is true about mirror adjustment?

    you should adjust your mirrors prior to starting a trip

  • 6

    Brakes fade;

    can be caused by the brakes getting very hot

  • 7

    Which of these is true about the use of a heater?

    when driving in winter weather, you should check that the heater is working properly

  • 8

    What is the proper way to hold the steering wheel?

    with both hands firmly, on opposite sides of the wheel

  • 9

    If you have a heavy load that is slowing you down on an upgrade, you should ?

    shift into a lower gear

  • 10

    Which of these is not a danger when automatic transmission is forced into a low gear at high speeds?

    loss of steering control

  • 11

    You should signal continuously while turning because ?

    you need both hands on the wheel to turn safely

  • 12

    The primary cause of fatal crashes is ?

    driving too fast

  • 13

    You should try to park so that ?

    you can pull forward when you leave

  • 14

    Your driving a vehicle at 45 mph on dry pavement. About how much total stopping distance will you need to bring it to a stop?

    The length of a football field

  • 15

    What is the best advice for drivers when a heavy fog occurs?

    park at a truck stop or rest area until fog has lifted

  • 16

    Which of these state about cold weather driving is true?

    windshield washer antifreeze should be used

  • 17

    Strong winds most affect driving ?

    upon exiting tunnels

  • 18

    Perception distance is the distance your vehicle travels from the time ?

    the eyes see a hazard to the time the brain knows it is a hazard

  • 19

    Your driving on a two lane road. An oncoming driver drifts into your lane headed straight for you. Which of these is most often the best action to take?

    steer to the right

  • 20

    In the event of a rear tire failure, dual rear tires ?

    will usually,prevent fishtailing

  • 21

    Which of these is correct about emergency or evasive action?

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

  • 22

    Most serious skid results from ?

    driving too fast for conditions

  • 23

    Over length, over width, or over weight loads ?

    require a special transit permit

  • 24

    Container red loads ?

    Are generally used when freight is carried part way by rail or ship

  • 25

    A full stop is required at a railroad grade crossing when ?

    the nature of the cargo makes a stop mandatory under state, or for incompatible items

  • 26

    You do not have a hazard materials endorsement on your commercial drivers license. You can drive a vehicle hauling hazardous material when ?

    The vehicle does not require placards

  • 27

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

    use the parking brake to hold the vehicle until the clutch engages

  • 28

    If your brakes fail on a downgrade, you must first ?

    look outside your vehicle for another means of slowing it

  • 29

    Medicines use to treat the common cold ?

    often makes your drowsy and thus should not be used while driving

  • 30

    Which of these statements about drugs is true?

    use of drugs can lead to accidents and/or arrest

  • 31

    Which of these statements about causes of vehicle fires is true?

    poor trailer ventilation can cause cargo to catch in fire

  • 32

    What will help keep and engine cool in hot weather ?

    making sure the engine has the right amount of oil

  • 33

    What is counter steering ?

    turning the wheel back in the opposite direction after steering to avoid an emergency

  • 34

    Which of these statement about down shifting is true?

    when you down shift for a curve, you should do so before you enter the curve

  • 35

    Why is it important to shift gears correctly?

    keep control of the vehicle

  • 36

    Backing a commercial vehicle is ?

    always dangerous

  • 37

    You see a car approaching from the rear; the next time you check your mirror the car is gone. You wish to change lanes, you should ?

    wait to change lanes until you are sure the car isn’t in your blind spots

  • 38

    Merging onto a road is safest if you ?

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

  • 39

    If your being tail gated you should ?

    increase your following distance

  • 40

    What should you do if a car coming towards you at night keeps its high beams on ?

    look at the right side of the road

  • 41

    The road you are traveling on becomes very slippery due to glare ice. Which of these is a a good thing to do in such a situation?

    stop driving as soon as you can safely do so

  • 42

    The best drivers are those that watch and prepare for hazards. This is called ?

    defensive

  • 43

    Which of the below is not a characteristic of a front tire failure?

    vehicle fish tail

  • 44

    When hydraulic brakes fail while driving, what action should you take?

    pump the brake pedal to generate pressure

  • 45

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

    pumping the pedal may bring pressure up so you can stop the vehicle

  • 46

    Which of these happens when a tire blows out at highway speed?

    a vibrating feeling

  • 47

    How do you correct a rear wheel acceleration skid?

    stop accelerating

  • 48

    Which of these system should receive extra attention during cold weather inspection?

    exhaust

  • 49

    Can federal inspectors inspect your truck or bus ?

    yes and they can put it out of service if it is unsafe

  • 50

    Which of these statements about tires is true?

    you should inspect your tires every 2 hours or every 100 miles when driving in hot weather

  • 51

    If your not sure what to use to put out hazardous material fires, you should ?

    wait on qualified firefighters

  • 52

    When you are driving on grades ,which of these is the best way to chose a safe speed?

    based on your vehicle and its cargo , select a safe speed that is within the posted speed limit

  • 53

    When confronted by an aggressive driver, the very first thing you should do is?

    make every attempt to get out their way

  • 54

    On which fires can water be used?

    tires

  • 55

    Which of these statements about engine overheating is true?

    you should never remove the radiator cap on a pressurized system until it has cooled

  • 56

    Which of these is not a danger of rough acceleration?

    tire damage

  • 57

    If possible, a helper should be used to help back your vehicle?

    whenever you have to back up

  • 58

    When looking ahead of your vehicle while driving you should look ?

    back and forth , near and far

  • 59

    How far ahead of the vehicle should the driver look while driving?

    12-15 seconds

  • 60

    Which of these is the proper way to signal to change lanes?

    signal early and change lanes slowly and smoothly

  • 61

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

    500 ft

  • 62

    Your driving in an area with few street lights on a clear night. If you cannot set well with your headlights, which of these action would help?

    use your high beams when legal and keep your interior light off

  • 63

    What happens to tar in road pavement when it gets extremely hot?

    it bleeds, making the road surface slippery

  • 64

    You can see marking on a vehicle ahead of you.the marking is a red triangle with an orange center. What does the marking mean?

    it may be a slow moving vehicle

  • 65

    Hydroplaning ?

    is more likely when tire pressure is low

  • 66

    What should you do when your vehicle hydroplane ?

    release the acceleration

  • 67

    Which of these statements about an inspection of suspension components is true?

    axel mounts should be checked at each point where they are secured on the vehicle frame and axel

  • 68

    Should brake adjustment be checked often?

    yes, because brakes can get out of adjustment when they are used a lot

  • 69

    Which of these is not part of the pre-trip inspection of the engine compartment?

    value clearance

  • 70

    To help you stay alert while driving, you should?

    take short breaks before you get drowsy

  • 71

    Which of the following is a good way to react to an aggressive driver?

    give the driver the benefit of the doubt

  • 72

    If you must use a cell phone while driving, you should ?

    pull iff the road onto a safe and legal position

  • 73

    Which of these statements about staying alert to drive is true?

    sleep is the only thing that can overcome fatigue

  • 74

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

    if a hill or curve keeps others from seeing the vehicle within 500 feet, the rear triangle should be moved back down the road to give adequate warning

  • 75

    Which of these do not provide extra gears on some trucks?

    automatic transmission

  • 76

    Which of these actions is not recommended for a left turn?

    start in the inside and swing right as you turn

  • 77

    The distance you should look ahead of your vehicle while driving is ? Of a mile at highway speed?

    1/4

  • 78

    Your driving a heavy vehicle. You must exit a highway using an off ramp that curves downhill. you should?

    slow down to a safe speed before the curve

  • 79

    When you are driving on a show packed road you should reduce your speed by at least ?

    1/2

  • 80

    Your brakes can get wet when driving through heavy rain. What can this cause when the brakes are applied?

    trailer jack knife

  • 81

    You should avoid driving through deep puddle or flowing water, but if you must which of these steps can help keep your brakes working ?

    gently putting on the brakes while driving through the water

  • 82

    When driving through work zones you should ?

    use your 4 way flashers or brake lights to warn others

  • 83

    In bad weather, many cars tail gate large vehicles. What should you do?

    increase your following distance so you can avoid quick maneuvers

  • 84

    Which of these is a good thing to remember about drinking alcohol?

    alcohol affects judgment and self control,which are necessary for safe driving

  • 85

    Which of these statements about vehicle fires is true?

    a burning tire should be cooled with water

  • 86

    Optional safety equipment may include emergency numbered tire chains and ?

    tire changing equipment

  • 87

    After starting the engine ?

    the coolent temperature gauge should begin a gradual rise to the normal range

  • 88

    Retarders can be used ?

    only when permitted by laws

  • 89

    Which of these statements about brakes is true?

    the heavier a vehicle or the faster it is moving the more heat the brakes have to absorb to stop it

  • 90

    What is the term for a commercial vehicles habit of swinging wide in a turn?

    off tracking

  • 91

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

    you can use the tachometer to tail when to shift

  • 92

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

    it can startle other drivers

  • 93

    You are driving a vehicle that could be safely driven at 55 mph, but traffic is heavy and moving at 35 mph even though the limit is 55. What is the safest speed?

    35 mph

  • 94

    Whenever you double your speed, how much more distance does it take to stop?

    4 times the distance

  • 95

    How does vehicle weight effect stopping?

    empty trucks can take longer to stop than loaded ones, but this is usually not the case for buses.

  • 96

    Which of these statements about overhead Clarence is true?

    keep your speed slow enough that you can stop in the range of your headlights

  • 97

    Which vehicle will be most affected by strong wind?

    a set of empty doubles

  • 98

    Which of these is not true about emergency braking?

    it is not important how you in an emergency

  • 99

    When the roads are slippery, you should?

    make turns as gently as possible

  • 100

    Which of these is the most important thing to remember about emergency braking?

    if the wheels are skidding you cannot control your vehicle

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    問題一覧

  • 1

    As the blood alcohol concentration (BAC) goes up, what happen ?

    Judgment and self control are affected

  • 2

    Implied consent means?

    you given consent to be tested for alcohol in your blood

  • 3

    The total weight of the power unit, the trailer, and the cargo is called?

    Gross combination weight

  • 4

    If you do not have a CB radio, what is the 1st thing you should do at an accident scene?

    Protect the area

  • 5

    Which of these is true about mirror adjustment?

    you should adjust your mirrors prior to starting a trip

  • 6

    Brakes fade;

    can be caused by the brakes getting very hot

  • 7

    Which of these is true about the use of a heater?

    when driving in winter weather, you should check that the heater is working properly

  • 8

    What is the proper way to hold the steering wheel?

    with both hands firmly, on opposite sides of the wheel

  • 9

    If you have a heavy load that is slowing you down on an upgrade, you should ?

    shift into a lower gear

  • 10

    Which of these is not a danger when automatic transmission is forced into a low gear at high speeds?

    loss of steering control

  • 11

    You should signal continuously while turning because ?

    you need both hands on the wheel to turn safely

  • 12

    The primary cause of fatal crashes is ?

    driving too fast

  • 13

    You should try to park so that ?

    you can pull forward when you leave

  • 14

    Your driving a vehicle at 45 mph on dry pavement. About how much total stopping distance will you need to bring it to a stop?

    The length of a football field

  • 15

    What is the best advice for drivers when a heavy fog occurs?

    park at a truck stop or rest area until fog has lifted

  • 16

    Which of these state about cold weather driving is true?

    windshield washer antifreeze should be used

  • 17

    Strong winds most affect driving ?

    upon exiting tunnels

  • 18

    Perception distance is the distance your vehicle travels from the time ?

    the eyes see a hazard to the time the brain knows it is a hazard

  • 19

    Your driving on a two lane road. An oncoming driver drifts into your lane headed straight for you. Which of these is most often the best action to take?

    steer to the right

  • 20

    In the event of a rear tire failure, dual rear tires ?

    will usually,prevent fishtailing

  • 21

    Which of these is correct about emergency or evasive action?

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

  • 22

    Most serious skid results from ?

    driving too fast for conditions

  • 23

    Over length, over width, or over weight loads ?

    require a special transit permit

  • 24

    Container red loads ?

    Are generally used when freight is carried part way by rail or ship

  • 25

    A full stop is required at a railroad grade crossing when ?

    the nature of the cargo makes a stop mandatory under state, or for incompatible items

  • 26

    You do not have a hazard materials endorsement on your commercial drivers license. You can drive a vehicle hauling hazardous material when ?

    The vehicle does not require placards

  • 27

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

    use the parking brake to hold the vehicle until the clutch engages

  • 28

    If your brakes fail on a downgrade, you must first ?

    look outside your vehicle for another means of slowing it

  • 29

    Medicines use to treat the common cold ?

    often makes your drowsy and thus should not be used while driving

  • 30

    Which of these statements about drugs is true?

    use of drugs can lead to accidents and/or arrest

  • 31

    Which of these statements about causes of vehicle fires is true?

    poor trailer ventilation can cause cargo to catch in fire

  • 32

    What will help keep and engine cool in hot weather ?

    making sure the engine has the right amount of oil

  • 33

    What is counter steering ?

    turning the wheel back in the opposite direction after steering to avoid an emergency

  • 34

    Which of these statement about down shifting is true?

    when you down shift for a curve, you should do so before you enter the curve

  • 35

    Why is it important to shift gears correctly?

    keep control of the vehicle

  • 36

    Backing a commercial vehicle is ?

    always dangerous

  • 37

    You see a car approaching from the rear; the next time you check your mirror the car is gone. You wish to change lanes, you should ?

    wait to change lanes until you are sure the car isn’t in your blind spots

  • 38

    Merging onto a road is safest if you ?

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

  • 39

    If your being tail gated you should ?

    increase your following distance

  • 40

    What should you do if a car coming towards you at night keeps its high beams on ?

    look at the right side of the road

  • 41

    The road you are traveling on becomes very slippery due to glare ice. Which of these is a a good thing to do in such a situation?

    stop driving as soon as you can safely do so

  • 42

    The best drivers are those that watch and prepare for hazards. This is called ?

    defensive

  • 43

    Which of the below is not a characteristic of a front tire failure?

    vehicle fish tail

  • 44

    When hydraulic brakes fail while driving, what action should you take?

    pump the brake pedal to generate pressure

  • 45

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

    pumping the pedal may bring pressure up so you can stop the vehicle

  • 46

    Which of these happens when a tire blows out at highway speed?

    a vibrating feeling

  • 47

    How do you correct a rear wheel acceleration skid?

    stop accelerating

  • 48

    Which of these system should receive extra attention during cold weather inspection?

    exhaust

  • 49

    Can federal inspectors inspect your truck or bus ?

    yes and they can put it out of service if it is unsafe

  • 50

    Which of these statements about tires is true?

    you should inspect your tires every 2 hours or every 100 miles when driving in hot weather

  • 51

    If your not sure what to use to put out hazardous material fires, you should ?

    wait on qualified firefighters

  • 52

    When you are driving on grades ,which of these is the best way to chose a safe speed?

    based on your vehicle and its cargo , select a safe speed that is within the posted speed limit

  • 53

    When confronted by an aggressive driver, the very first thing you should do is?

    make every attempt to get out their way

  • 54

    On which fires can water be used?

    tires

  • 55

    Which of these statements about engine overheating is true?

    you should never remove the radiator cap on a pressurized system until it has cooled

  • 56

    Which of these is not a danger of rough acceleration?

    tire damage

  • 57

    If possible, a helper should be used to help back your vehicle?

    whenever you have to back up

  • 58

    When looking ahead of your vehicle while driving you should look ?

    back and forth , near and far

  • 59

    How far ahead of the vehicle should the driver look while driving?

    12-15 seconds

  • 60

    Which of these is the proper way to signal to change lanes?

    signal early and change lanes slowly and smoothly

  • 61

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

    500 ft

  • 62

    Your driving in an area with few street lights on a clear night. If you cannot set well with your headlights, which of these action would help?

    use your high beams when legal and keep your interior light off

  • 63

    What happens to tar in road pavement when it gets extremely hot?

    it bleeds, making the road surface slippery

  • 64

    You can see marking on a vehicle ahead of you.the marking is a red triangle with an orange center. What does the marking mean?

    it may be a slow moving vehicle

  • 65

    Hydroplaning ?

    is more likely when tire pressure is low

  • 66

    What should you do when your vehicle hydroplane ?

    release the acceleration

  • 67

    Which of these statements about an inspection of suspension components is true?

    axel mounts should be checked at each point where they are secured on the vehicle frame and axel

  • 68

    Should brake adjustment be checked often?

    yes, because brakes can get out of adjustment when they are used a lot

  • 69

    Which of these is not part of the pre-trip inspection of the engine compartment?

    value clearance

  • 70

    To help you stay alert while driving, you should?

    take short breaks before you get drowsy

  • 71

    Which of the following is a good way to react to an aggressive driver?

    give the driver the benefit of the doubt

  • 72

    If you must use a cell phone while driving, you should ?

    pull iff the road onto a safe and legal position

  • 73

    Which of these statements about staying alert to drive is true?

    sleep is the only thing that can overcome fatigue

  • 74

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

    if a hill or curve keeps others from seeing the vehicle within 500 feet, the rear triangle should be moved back down the road to give adequate warning

  • 75

    Which of these do not provide extra gears on some trucks?

    automatic transmission

  • 76

    Which of these actions is not recommended for a left turn?

    start in the inside and swing right as you turn

  • 77

    The distance you should look ahead of your vehicle while driving is ? Of a mile at highway speed?

    1/4

  • 78

    Your driving a heavy vehicle. You must exit a highway using an off ramp that curves downhill. you should?

    slow down to a safe speed before the curve

  • 79

    When you are driving on a show packed road you should reduce your speed by at least ?

    1/2

  • 80

    Your brakes can get wet when driving through heavy rain. What can this cause when the brakes are applied?

    trailer jack knife

  • 81

    You should avoid driving through deep puddle or flowing water, but if you must which of these steps can help keep your brakes working ?

    gently putting on the brakes while driving through the water

  • 82

    When driving through work zones you should ?

    use your 4 way flashers or brake lights to warn others

  • 83

    In bad weather, many cars tail gate large vehicles. What should you do?

    increase your following distance so you can avoid quick maneuvers

  • 84

    Which of these is a good thing to remember about drinking alcohol?

    alcohol affects judgment and self control,which are necessary for safe driving

  • 85

    Which of these statements about vehicle fires is true?

    a burning tire should be cooled with water

  • 86

    Optional safety equipment may include emergency numbered tire chains and ?

    tire changing equipment

  • 87

    After starting the engine ?

    the coolent temperature gauge should begin a gradual rise to the normal range

  • 88

    Retarders can be used ?

    only when permitted by laws

  • 89

    Which of these statements about brakes is true?

    the heavier a vehicle or the faster it is moving the more heat the brakes have to absorb to stop it

  • 90

    What is the term for a commercial vehicles habit of swinging wide in a turn?

    off tracking

  • 91

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

    you can use the tachometer to tail when to shift

  • 92

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

    it can startle other drivers

  • 93

    You are driving a vehicle that could be safely driven at 55 mph, but traffic is heavy and moving at 35 mph even though the limit is 55. What is the safest speed?

    35 mph

  • 94

    Whenever you double your speed, how much more distance does it take to stop?

    4 times the distance

  • 95

    How does vehicle weight effect stopping?

    empty trucks can take longer to stop than loaded ones, but this is usually not the case for buses.

  • 96

    Which of these statements about overhead Clarence is true?

    keep your speed slow enough that you can stop in the range of your headlights

  • 97

    Which vehicle will be most affected by strong wind?

    a set of empty doubles

  • 98

    Which of these is not true about emergency braking?

    it is not important how you in an emergency

  • 99

    When the roads are slippery, you should?

    make turns as gently as possible

  • 100

    Which of these is the most important thing to remember about emergency braking?

    if the wheels are skidding you cannot control your vehicle