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CDL Study Guide > 1˚ TEST > Flashcards

1˚ TEST Flashcards

1
Q

What is the main function of the air compressor in a commercial vehicle?
* A) To inflate the tires
* B) To power the headlights
* C) To provide air for the brakes
* D) To cool the engine

A

CORRECT ANSWER: C)

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2
Q

What is the purpose of the air lines between the tractor and the trailer?
* A) To provide fuel to the trailer
* B) To supply air for the trailer’s brakes
and suspension
* C) To transmit electrical signals to the
trailer lights
* D) To connect the steering mechanism

A

CORRECT ANSWER: B)

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3
Q

What is the minimum age requirement to obtain a CDL in most states?
* A) 16 years old
* B) 18 years old
* C) 21 years old
* D) 25 years old

A

CORRECT ANSWER: C)

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4
Q

What is the main purpose of the air compressor in a commercial vehicle?
* A) To provide air for the brakes
* B) To cool the engine
* C) To inflate the tires
* D) To power the headlights

A

CORRECT ANSWER: A)

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5
Q

What is the main reason for needing a tanker endorsement?
* A) To transport livestock
* B) To transport bulk liquids
* C) To drive longer routes
* D) To operate vehicles with air brakes

A

CORRECT ANSWER: B)

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6
Q

What is the primary purpose of baffles in a tanker?
* A) To divide the tank into
compartments
* B) To reduce the weight of the vehicle
* C) To control the movement of liquid
and prevent surge
* D) To increase the tank’s capacity

A

CORRECT ANSWER: C)

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7
Q

What is the purpose of the Hazardous Materials Regulations (HMR)?
* A) To increase fuel efficiency
* B) To ensure the safe transport of hazardous materials
* C) To reduce vehicle emissions
* D) To provide guidelines for vehicle maintenance

A

CORRECT ANSWER: B)

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8
Q

What is the primary purpose of the Hazardous Materials Regulations (HMR)?
* A) To improve fuel efficiency
* B) To ensure the safe and secure
transport of hazardous materials
* C) To reduce vehicle maintenance
costs
* D) To provide guidelines for vehicle
emissions

A

CORRECT ANSWER: B)

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9
Q

What is the primary reason for conducting a pre-trip inspection on double and triple trailers?
* A) To check fuel levels
* B) To ensure the safety and
compliance of the vehicle
* C) To verify delivery schedules
* D) To test the radio

A

CORRECT ANSWER: B)

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10
Q

What is the purpose of the converter dolly on a double or triple trailer?
* A) To provide additional cargo space
* B) To connect the second and third
trailers to the lead trailer
* C) To improve fuel efficiency
* D) To stabilize the trailers during turns

A

CORRECT ANSWER: B)

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11
Q

What should you do if a student refuses to follow safety rules on the bus?
* A) Ignore the behavior
* B) Report the behavior to the school
administration
* C) Punish the student yourself
* D) Let the other students handle it

A

CORRECT ANSWER: B)

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12
Q

What should a school bus driver do before crossing any railroad tracks?
* A) Speed up to cross quickly
* B) Stop, look, and listen for trains
* C) Proceed without stopping if no train
is visible
* D) Honk the horn and proceed

A

CORRECT ANSWER: B)

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13
Q

When should you inspect your bus for damage or safety issues?
* A) Only at the beginning of the day
* B) Before and after each trip
* C) Only when you notice a problem
* D) Weekly

A

CORRECT ANSWER: B)

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14
Q

What should you do if a passenger bus is involved in an accident?
* A) Continue to your destination
* B) Ensure the safety of passengers, call
for help, and remain at the scene
* C) Drive to the nearest police station
* D) Move the bus to a safe location and
leave the passengers unattended

A

CORRECT ANSWER: B)

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15
Q

What is the primary purpose of a vehicle inspection?
* A) To improve fuel efficiency
* B) To ensure the vehicle is safe
operate
* C) To check the weather conditions
* D) To clean the vehicle

A

CORRECT ANSWER: B)

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16
Q

What should you check for on the windshield during a pre-trip inspection?
* A) The color of the glass
* B) Cleanliness, cracks, chips, or any
damage
* C) The brand of the windshield
* D) The thickness of the glass

A

CORRECT ANSWER: B)

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17
Q

Which CDL class is required to operate a combination vehicle with a GCWR of 26,001 pounds or more?
* A) Class A
* B) Class B
* C) Class C
* D) Class D

A

CORRECT ANSWER: A)

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18
Q

What does CDL stand for?
* A) Commercial Driving License
* B) Commercial Driver’s License
* C) Commercial Delivery License
* D) Cargo Driver’s License

A

CORRECT ANSWER: B)

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19
Q

What is the function of the air dryer in an air brake system?
* A) To remove moisture from the air
* B) To cool the compressed air
* C) To increase air pressure
* D) To reduce air pressure

A

CORRECT ANSWER: A)

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20
Q

What is the purpose of the air dryer in an air brake system?
* A) To increase air pressure
* B) To cool the compressed air
* C) To remove moisture from the air
* D) To reduce air pressure

A

CORRECT ANSWER: C)

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21
Q

What should you do if you notice air leaking from the trailer air lines during a pre-trip inspection?
* A) Ignore it and continue driving
* B) Report the issue and get it fixed
before driving
* C) Use tape to temporarily seal the
leak
* D) Disconnect the air lines and drive
without them

A

CORRECT ANSWER: B)

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22
Q

What should you do before loading a tank?
* A) Check for proper ventilation
* B) Ensure the tank is clean and free of
leaks
* C) Inflate the tires to maximum
pressure
* D) Disconnect the brake lines

A

CORRECT ANSWER: B)

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23
Q

What should you do if you experience a tire blowout while driving a tanker?
* A) Immediately brake hard
* B) Steer straight and gradually slow
down
* C) Accelerate to regain control
* D) Turn sharply to the side of the road

A

CORRECT ANSWER: B)

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24
Q

When approaching a bus stop, what is the correct sequence of actions?
* A) Signal, slow down, activate warning
lights, stop, and open the door
* B) Speed up, activate warning lights,
stop, and open the door
* C) Signal, stop, activate warning lights,
and open the door
* D) Activate warning lights, slow down,
stop, and open the door

A

CORRECT ANSWER: A)

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25
Q

When loading or unloading students, how far should they move away from the bus to ensure safety?
* A) 2 feet
* B) 5 feet
* C) 10 feet
* D) 20 feet

A

CORRECT ANSWER: C)

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26
Q

How often should you check your mirrors while driving a passenger bus?
* A) Every 5-8 seconds
* B) Every 10-12 seconds
* C) Every 20-30 seconds
* D) Only when changing lanes

A

CORRECT ANSWER: A)

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27
Q

When should the bus’s emergency exits be used?
* A) Only in the event of a fire
* B) Only during emergency evacuation
drills
* C) In any emergency situation
requiring evacuation
* D) Only when the front door is blocked

A

CORRECT ANSWER: C)

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28
Q
  1. How often should a pre-trip inspection be conducted?
    * A) Once a week
    * B) Only when you suspect a problem
    * C) Before every trip
    * D) Once a month
A

CORRECT ANSWER: C)

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29
Q

During a pre-trip inspection, what should you look for on the vehicle’s mirrors?
* A) Cleanliness, proper adjustment, and
any cracks or damage
* B) The mirror’s color
* C) The brand of the mirror
* D) The size of the mirror

A

CORRECT ANSWER: A)

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30
Q

What does the term “placard” refer to in hazardous materials transportation?
* A) A type of cargo container
* B) A sign indicating the presence of
hazardous materials
* C) A protective covering for the vehicle
* D) A communication device

A

CORRECT ANSWER: B)

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31
Q

Which of the following is required to operate a vehicle transporting hazardous materials?
* A) Class A CDL
* B) Class B CDL
* C) Class C CDL
* D) Hazardous Materials Endorsement (HME)

A

CORRECT ANSWER: D)

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32
Q

What is the minimum air pressure required for the proper operation of air brakes?
* A) 60 PSI
* B) 80 PSI
* C) 90 PSI
* D) 100 PSI

A

CORRECT ANSWER: D)

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33
Q

At what PSI does the low air pressure warning typically activate?
* A) 100 PSI
* B) 80 PSI
* C) 60 PSI
* D) 40 PSI

A

CORRECT ANSWER: C)

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34
Q
  1. How do you know if the trailer height is correct for coupling?
    * A) The trailer should be higher than
    the fifth wheel
    * B) The trailer should be lower than the
    fifth wheel
    * C) The trailer should be level with the
    fifth wheel
    * D) The trailer should be touching the
    ground
A

CORRECT ANSWER: B)

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35
Q

What is “surge” in a tanker vehicle?
* A) A sudden increase in engine power
* B) The movement of liquid in the tank
causing forward and backward motion
* C) A quick stop of the vehicle
* D) An increase in air pressure in the
brakes

A

CORRECT ANSWER: B)

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36
Q

Which of the following is required to transport hazardous materials?
* A) A special driver’s license
* B) A vehicle inspection sticker
* C) A Hazardous Materials Endorsement
(HME) on your CDL
* D) An environmental permit

A

CORRECT ANSWER: C)

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37
Q

What is a “hazmat employee”?
* A) Anyone who loads, unloads, or
handles hazardous materials
* B) Only the driver of the vehicle
* C) Only the shipping clerk
* D) Only the recipient of the hazardous
materials

A

CORRECT ANSWER: A)

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38
Q

What should you check after coupling a second trailer?
* A) The cargo weight
* B) The weather forecast
* C) The coupling is secure and the
brakes are connected
* D) The route to the destination

A

CORRECT ANSWER: C)

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39
Q

What must a driver have in order to transport hazardous materials?
* A) A regular CDL
* B) A Hazardous Materials Endorsement
(HME) on their CDL
* C) A special permit from the state
* D) A vehicle with a reinforced chassis

A

CORRECT ANSWER: B)

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40
Q

When coupling double trailers, what is the first step?
* A) Connect the air lines
* B) Secure the converter dolly
* C) Inspect the rear trailer
* D) Align the dolly with the rear trailer

A

CORRECT ANSWER: D)

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41
Q

When approaching a railroad crossing, a school bus driver should:
* A) Speed up to cross quickly
* B) Stop, look, and listen before
crossing
* C) Proceed without stopping if no train
is visible
* D) Honk the horn and proceed

A

CORRECT ANSWER: B)

42
Q

How often should school bus drivers check the mirrors for students or traffic?
* A) Every 5-8 seconds
* B) Every 10-12 seconds
* C) Every 20-30 seconds
* D) Only when changing lanes

A

CORRECT ANSWER: A)

43
Q

When coupling a converter dolly to the rear trailer, what should you ensure?
* A) The dolly is clean
* B) The dolly is properly aligned with
the rear trailer
* C) The dolly has enough fuel
* D) The dolly’s tires are new

A

CORRECT ANSWER: B)

44
Q

What should you do if you smell fuel while driving a passenger bus?
* A) Continue driving to your destination
* B) Open the windows
* C) Stop immediately and evacuate the
passengers
* D) Ignore it

A

CORRECT ANSWER: C)

45
Q

What is the main purpose of conducting a pre-trip inspection on a passenger bus?
* A) To check for cleanliness
* B) To ensure the bus is safe to operate
* C) To check the fuel level
* D) To ensure all passengers are
present

A

CORRECT ANSWER: B)

46
Q

What should you check on the tires during a vehicle inspection?
* A) Tread depth, tire pressure, and any
damage
* B) Color of the tire
* C) Brand of the tire
* D) The age of the tire

A

CORRECT ANSWER: A)

47
Q

What should you do if you find that your trailers are not tracking properly?
* A) Speed up to correct the issue
* B) Slow down and check your trailer
alignment
* C) Use the trailer hand valve
* D) Continue driving until you can stop

A

CORRECT ANSWER: B)

48
Q

How can you reduce the effects of surge?
* A) Accelerate quickly
* B) Use controlled braking and smooth
steering
* C) Make sharp turns
* D) Keep the tank half-full

A

CORRECT ANSWER: B)

49
Q

What is the correct way to check the vehicle’s oil level?
* A) By checking the color of the oil
* B) By using the dipstick to ensure the
oil is within the safe range
* C) By smelling the oil
* D) By checking the oil’s brand

A

CORRECT ANSWER: B)

50
Q

What should you do if the trailer is too high when attempting to couple?
* A) Lower the trailer by using the
landing gear
* B) Raise the trailer by using the landing
gear
* C) Drive the tractor under the trailer
anyway
* D) Adjust the height of the fifth wheel

A

CORRECT ANSWER: A)

51
Q

What endorsement is needed to transport passengers in a commercial vehicle?
* A) N Endorsement
* B) P Endorsement
* C) H Endorsement
* D) T Endorsement

A

CORRECT ANSWER: B)

52
Q

What is the “shipping paper” for hazardous materials?
* A) A document that provides details
about the cargo, including the type and
quantity of hazardous materials
* B) A certificate of vehicle inspection
* C) A fuel consumption log
* D) A maintenance record

A

CORRECT ANSWER: A)

53
Q

What is a “placard” used for?
* A) To indicate the vehicle’s speed
* B) To identify the type of hazardous
materials being transported
* C) To show the vehicle’s weight
* D) To mark the vehicle’s maintenance
schedule

A

CORRECT ANSWER: B)

54
Q

How often should you inspect the connections and brakes on double or triple trailers?
* A) Only at the beginning of the trip
* B) Every time you stop
* C) Once a week
* D) Only during a pre-trip inspection

A

CORRECT ANSWER: B)

55
Q

How should you check for leaks in the air brake system of a double or triple trailer?
* A) Listen for hissing sounds
* B) Feel for air coming from the lines
* C) Use a pressure gauge
* D) Check for wet spots on the ground

A

CORRECT ANSWER: A)

56
Q

Why must you be especially careful when driving a tanker on a wet road?
* A) To avoid splashing other vehicles
* B) Because the liquid surge can
increase the risk of skidding
* C) Because the tank can overheat
* D) To maintain fuel efficiency

A

CORRECT ANSWER: B)

57
Q

Why is it important to conduct a walk-around inspection of your double or triple trailers?
* A) To check the cargo weight
* B) To ensure the trailers are clean
* C) To verify all connections are secure
and there are no visible issues
* D) To check the fuel levels

A

CORRECT ANSWER: C)

58
Q

How far from a railroad crossing should a school bus stop?
* A) 10 to 20 feet
* B) 15 to 50 feet
* C) 5 to 10 feet
* D) 50 to 100 feet

A

CORRECT ANSWER: B)

59
Q

How should you check the vehicle’s brake lights during an inspection?
* A) By pressing the brake pedal and
asking someone to check if the lights
are working
* B) By checking the color of the lights
* C) By inspecting the light bulbs only
* D) By turning on the hazard lights

A

CORRECT ANSWER: A)

60
Q

What must a driver do before starting a trip?
* A) Fill out a pre-trip inspection report
* B) Check their e-mail
* C) Call the dispatcher
* D) Wash the vehicle

A

CORRECT ANSWER: A)

61
Q

What is the minimum tire tread depth for front tires?
* A) 2/32 of an inch
* B) 4/32 of an inch
* C) 6/32 of an inch
* D) 8/32 of an inch

A

CORRECT ANSWER: B)

62
Q

What is the function of the coupling system?
* A) To connect the tractor to the trailer
* B) To provide electrical power to the
trailer
* C) To adjust the trailer’s brakes
* D) To balance the load

A

CORRECT ANSWER: A)

63
Q

Which component stores compressed air for the brake system?
* A) Air compressor
* B) Air tank
* C) Air dryer
* D) Brake chamber

A

CORRECT ANSWER: B)

64
Q

Which of the following endorsements is required to operate a school bus?
* A) S Endorsement
* B) P Endorsement
* C) H Endorsement
* D) N Endorsement

A

CORRECT ANSWER: A)

65
Q

How often should the air tanks be drained to remove accumulated moisture?
* A) Daily
* B) Weekly
* C) Monthly
* D) Yearly

A

CORRECT ANSWER: A)

66
Q

What is the maximum allowable blood alcohol concentration (BAC) for CDL drivers?
* A) 0.08%
* B) 0.04%
* C) 0.06%
* D) 0.02%

A

CORRECT ANSWER: B)

67
Q

Why are baffled tanks used?
* A) To reduce the vehicle’s weight
* B) To separate different types of
liquids
* C) To reduce the movement of liquid
and control surge
* D) To increase the carrying capacity of
the tank

A

CORRECT ANSWER: C)

68
Q

What should you check for during a pre-trip inspection of a tanker vehicle?
* A) That the fuel level is full
* B) That the tank is properly secured
and free of leaks
* C) That the windshield wipers are
working
* D) That the tires are clean

A

CORRECT ANSWER: B)

69
Q

What should a driver do if they discover a hazardous materials leak during transport?
* A) Continue driving to the destination
* B) Park the vehicle and seek assistance
* C) Speed up to reduce the leak
* D) Ignore the leak and continue driving

A

CORRECT ANSWER: B)

70
Q

Where should the shipping papers for hazardous materials be kept while driving?
* A) Under the driver’s seat
* B) In the glove compartment
* C) Within reach of the driver, typically
in the driver’s door or on the seat
* D) In the trunk

A

CORRECT ANSWER: C)

71
Q

What is the main reason for avoiding sudden lane changes with doubles or triples?
* A) To maintain fuel efficiency
* B) To avoid disturbing the cargo
* C) To prevent trailer rollovers and
jackknifing
* D) To reduce wear on tires

A

CORRECT ANSWER: C)

72
Q

What is the best way to handle a sudden stop when driving doubles or triples?
* A) Use the trailer hand valve
* B) Apply the brakes gradually and
evenly
* C) Pump the brakes rapidly
* D) Use the engine brake only

A

CORRECT ANSWER: B)

73
Q

What should you do if the school bus stalls on a railroad track?
* A) Stay on the bus and call for help
* B) Evacuate the bus immediately
* C) Try to restart the bus
* D) Push the bus off the track

A

CORRECT ANSWER: B)

74
Q

When is it mandatory to use the stop arm and flashing red lights?
* A) When picking up or dropping off
students on a highway
* B) Only when dropping off students
* C) When the bus is parked
* D) Only when picking up students

A

CORRECT ANSWER: A)

75
Q

What is the safest way to handle unruly behavior on the school bus?
* A) Pull over to a safe location and
address the behavior
* B) Ignore the behavior
* C) Yell at the students
* D) Keep driving and report the
behavior at the end of the route

A

CORRECT ANSWER: A)

76
Q

What is the recommended procedure for evacuating students in an emergency?
* A) Evacuate through the rear
emergency door only
* B) Evacuate through the nearest exit,
including windows if necessary
* C) Evacuate only through the front
door
* D) Evacuate in the order of grade level

A

CORRECT ANSWER: B)

77
Q

What is the proper way to handle unruly passengers?
* A) Yell at them
* B) Ignore the behavior
* C) Stop the bus in a safe location and
address the behavior
* D) Allow other passengers to handle it

A

CORRECT ANSWER: C)

78
Q

When should you use the bus’s emergency exits?
* A) Only in the event of a fire
* B) Only during emergency evacuation
drills
* C) In any emergency situation
requiring evacuation
* D) Only when the front door is blocked

A

CORRECT ANSWER: C)

79
Q

How should you handle a situation where a passenger refuses to follow safety rules on the bus?
* A) Ignore the behavior
* B) Report the behavior to the school
administration
* C) Yell at the passenger
* D) Address the behavior calmly and
politely

A

CORRECT ANSWER: D)

80
Q

When inspecting the brakes, what should you look for?
* A) Cleanliness of the brake pads
* B) Proper brake adjustment, air leaks,
and brake pad wear
* C) Brake color
* D) Type of brake fluid used

A

CORRECT ANSWER: B)

81
Q

When inspecting the tires, what is the proper tread depth for steer tires?
* A) 1/32 inch
* B) 2/32 inch
* C) 4/32 inch
* D) 6/32 inch

A

CORRECT ANSWER: C)

82
Q

What does the “air pressure gauge” indicate?
* A) The fuel level
* B) The temperature of the engine
* C) The pressure in the air brake system
* D) The weight of the cargo

A

CORRECT ANSWER: C)

83
Q

What is the purpose of a pre-trip inspection?
* A) To clean the vehicle
* B) To check the vehicle’s condition and
ensure it is safe to drive
* C) To fuel the vehicle
* D) To load cargo

A

CORRECT ANSWER: B)

84
Q

What is the purpose of the supply pressure gauge?
* A) To measure the air pressure applied
to the brakes
* B) To indicate the amount of air
pressure in the air tanks
* C) To measure the temperature of the
air
* D) To indicate the amount of air
pressure in the brake chambers

A

CORRECT ANSWER: B)

85
Q

Why is it important to check the vehicle’s lights during an inspection?
* A) To ensure they are the right color
* B) To verify they are clean
* C) To ensure they are working properly
for visibility and safety
* D) To see if they match the vehicle’s
color

A

CORRECT ANSWER: C)

86
Q

How should you handle a curve when driving a tanker vehicle?
* A) Accelerate through the curve
* B) Maintain a steady speed
* C) Slow down before entering the
curve
* D) Brake hard before the curve

A

CORRECT ANSWER: C)

87
Q

What is the purpose of the standee line on a bus?
* A) To provide extra seating
* B) To mark the line where standing
passengers should not cross
* C) To indicate where to load cargo
* D) To separate the driver from
passengers

A

CORRECT ANSWER: B)

88
Q

What is the primary danger when transporting liquids in bulk?
* A) Overheating of the engine
* B) Excessive tire wear
* C) The risk of rollover due to high
center of gravity
* D) Decreased fuel efficiency

A

CORRECT ANSWER: C)

89
Q

How often should you check the emergency equipment on your bus?
* A) Only during the annual inspection
* B) Daily, before starting your route
* C) Once a month
* D) Only when you have an emergency

A

CORRECT ANSWER: B)

90
Q

What does the supply pressure gauge indicate?
* A) The air pressure applied to the
brakes
* B) The amount of air pressure in the
air tanks
* C) The temperature of the air
* D) The amount of air pressure in the
brake chambers

A

CORRECT ANSWER: B)

91
Q

What should you check during a pre-trip inspection of a tanker vehicle?
* A) The fuel level
* B) The cleanliness of the cab
* C) The tank for leaks and damage
* D) The radio functionality

A

CORRECT ANSWER: C)

92
Q

How often should the driver check the mirrors while driving the school bus?
* A) Every 5-8 seconds
* B) Every 10-12 seconds
* C) Every 20-30 seconds
* D) Only when changing lanes

A

CORRECT ANSWER: B)

93
Q

When should you activate your flashing amber warning lights?
* A) 100-200 feet before the bus stop
* B) 300 feet before the bus stop
* C) When stopping for any reason
* D) When driving in fog

A

CORRECT ANSWER: B)

94
Q

What does the low air pressure warning signal indicate?
* A) The air pressure is too high
* B) The air pressure is too low
* C) The brakes are overheating
* D) The air dryer needs servicing

A

CORRECT ANSWER: B)

95
Q

What should you check for after coupling the trailer to the tractor?
* A) Ensure the fifth wheel is properly
lubricated
* B) Check that the kingpin is locked in
place by the fifth wheel jaws
* C) Verify the trailer lights are working
* D) Inspect the trailer tires

A

CORRECT ANSWER: B)

96
Q

How should you handle a skid when pulling doubles or triples?
* A) Apply the brakes firmly
* B) Use the trailer hand valve
* C) Release the brakes to regain traction
* D) Turn the steering wheel sharply

A

CORRECT ANSWER: C)

97
Q

When backing double or triple trailers, what should you keep in mind?
* A) Use quick, sharp movements
* B) Make small steering adjustments to
keep the trailers aligned
* C) Rely solely on your mirrors
* D) Back up quickly to reduce the risk of
jackknifing

A

CORRECT ANSWER: B)

98
Q

What should you look for when inspecting the vehicle’s battery?
* A) The battery’s color
* B) The brand of the battery
* C) The size of the battery
* D) Secure mounting, no corrosion, and
proper connections

A

CORRECT ANSWER: D)

99
Q

What is the purpose of the tandem release (slider) on a trailer?
* A) To adjust the weight distribution between axles
* B) To secure the cargo
* C) To release the trailer from the truck
* D) To inflate the tires

A

CORRECT ANSWER: A)

100
Q

What should you do if a parent or guardian is not present to receive a young child at the bus stop?
* A) Leave the child at the stop
* B) Take the child back to the school
* C) Take the child to the next stop
* D) Wait at the stop until the parent arrives

A

CORRECT ANSWER: B)

CDL Study Guide (5 decks)

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