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CDL Study Guide > 4˚ TEST > Flashcards

4˚ TEST Flashcards

1
Q

What is a “retarder” and how does it help in driving?
* A) A device that helps slow down the vehicle without using brakes
* B) A type of speed limit sign
* C) A component of the engine cooling system
* D) A fuel-saving device

A

CORRECT ANSWER: A

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2
Q

When should the parking brakes be used?
* A) Only when parked on an incline
* B) Anytime the vehicle is parked
* C) Only during vehicle inspections
* D) Only when the vehicle is loaded

A

CORRECT ANSWER: B

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3
Q

What is the function of the emergency air line (red) in a combination vehicle?
* A) To supply air to the trailer’s service brakes
* B) To control the trailer’s emergency brakes
* C) To provide air for the trailer’s suspension system
* D) To supply air to the trailer’s air tanks

A

CORRECT ANSWER: D

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4
Q

Why should you avoid filling a tanker completely full?
* A) To allow for expansion of the liquid
* B) To reduce the weight of the vehicle
* C) To improve fuel efficiency
* D) To prevent the tank from leaking

A

CORRECT ANSWER: A

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5
Q

Why is it important to use the right type of tanker for the liquid being transported?
* A) To ensure the liquid does not freeze
* B) To maximize fuel efficiency
* C) To prevent chemical reactions and ensure safety
* D) To improve speed and handling

A

CORRECT ANSWER: C

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6
Q

What is required when transporting hazardous materials through a tunnel?
* A) Turn off the vehicle’s lights
* B) Follow the specific rules and restrictions for hazardous materials in that tunnel
* C) Drive as quickly as possible
* D) Avoid using the tunnel altogether

A

CORRECT ANSWER: B

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7
Q

How should you handle a steep downhill grade when driving doubles or triples?
* A) Use the trailer hand valve
* B) Apply the brakes continuously
* C) Use a lower gear and engine braking
* D) Speed up to maintain control

A

CORRECT ANSWER: C

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8
Q

What is the main reason to perform a tug test when coupling trailers?
* A) To check the weight of the trailer
* B) To ensure the trailer is securely attached
* C) To test the trailer lights
* D) To verify the cargo is secure

A

CORRECT ANSWER: B

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9
Q

How often should you inspect the coupling devices on double or triple trailers?
* A) Only during pre-trip inspections
* B) Before and after each trip
* C) Weekly
* D) Monthly

A

CORRECT ANSWER: B

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10
Q

What should you do if you smell fuel while driving the school bus?
* A) Continue driving and report it later
* B) Stop the bus immediately and evacuate the students
* C) Open the windows
* D) Speed up to the destination

A

CORRECT ANSWER: B

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11
Q

What is the primary purpose of the pre-trip inspection?
* A) To ensure the bus is clean
* B) To ensure the bus is safe to operate
* C) To load cargo
* D) To check the weather

A

CORRECT ANSWER: B

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12
Q

How should you respond if a passenger needs assistance while boarding or exiting the bus?
* A) Ignore them
* B) Assist them as needed, ensuring their safety
* C) Tell them to hurry up
* D) Ask another passenger to help

A

CORRECT ANSWER: B

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13
Q

How should you handle a situation where a passenger refuses to pay the fare?
* A) Ignore the passenger
* B) Yell at the passenger
* C) Stop the bus and refuse to continue until the fare is paid
* D) Follow company policy, which may include reporting to dispatch

A

CORRECT ANSWER: D

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14
Q

How do you check the vehicle’s turn signals and hazard lights?
* A) By ensuring they are the right color
* B) By turning them on to see if they work properly
* C) By inspecting the light bulbs
* D) By checking the light covers

A

CORRECT ANSWER: B

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15
Q

During an inspection, what should you check on the vehicle’s doors?
* A) The color of the doors
* B) Proper operation, secure hinges, and any damage
* C) The size of the doors
* D) The brand of the doors

A

CORRECT ANSWER: B

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16
Q

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

A

CORRECT ANSWER: C

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17
Q

How should a driver handle a curve in the road when driving a heavy vehicle?
* A) Accelerate through the curve
* B) Brake hard in the middle of the curve
* C) Slow down before entering the curve
* D) Drive through the curve at the posted speed limit

A

CORRECT ANSWER: C

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18
Q

How can you test the low-pressure warning signal?
* A) Step on and off the brake pedal to reduce air pressure
* B) Increase engine speed to build air pressure
* C) Drain the air tanks
* D) Apply the parking brakes

A

CORRECT ANSWER: A

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19
Q

What should you check for in the fifth wheel during a pre-trip inspection?
* A) That it is clean
* B) That it is properly lubricated
* C) That it is locked around the kingpin
* D) All of the above

A

CORRECT ANSWER: D

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20
Q

How should you drive a tanker on a downgrade?
* A) Use a lower gear and controlled braking
* B) Speed up to maintain control
* C) Use the parking brake intermittently
* D) Shift to a higher gear

A

CORRECT ANSWER: A

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21
Q

How should you handle a situation where the liquid in your tank starts to surge while turning?
* A) Steer sharply to counter the surge
* B) Slow down gradually and steer smoothly
* C) Speed up to stabilize the liquid
* D) Use the trailer hand valve

A

CORRECT ANSWER: B

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22
Q

What should you do if you find that your vehicle is leaking hazardous materials during transport?
* A) Speed up to reduce the leak
* B) Stop in a safe location and secure the area
* C) Continue driving to minimize downtime
* D) Park near a water source to wash away the leak

A

CORRECT ANSWER: B

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23
Q

How often must a driver transporting hazardous materials receive training?
* A) Once a month
* B) Every two years
* C) Every three years
* D) Every five years

A

CORRECT ANSWER: C

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24
Q

How should you handle turns when driving double or triple trailers?
* A) Make wide, slow turns
* B) Turn as you would with a single trailer
* C) Make sharp, quick turns
* D) Avoid using your mirrors

A

CORRECT ANSWER: A

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25
Q

What is the best way to ensure that the converter dolly is properly secured?
* A) Visual inspection
* B) Listening for a click sound
* C) Checking the air pressure gauge
* D) Pulling against the pin with the tractor

A

CORRECT ANSWER: D

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26
Q

When is it permissible to back up a school bus?
* A) When there is no other option
* B) When you are in a hurry
* C) Anytime, as long as it is done slowly
* D) Only when directed by a spotter or another responsible person

A

CORRECT ANSWER: D

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27
Q

How can you ensure the safety of students crossing the road after unloading?
* A) By telling them to run quickly
* B) By using the stop arm and ensuring all traffic has stopped
* C) By using a whistle
* D) By having them exit through the rear door

A

CORRECT ANSWER: B

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28
Q

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

A

CORRECT ANSWER: C

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29
Q

How often should you check for sleeping passengers at the end of your route?
* A) Daily
* B) Only when you suspect someone is sleeping
* C) After each trip or route
* D) Once a week

A

CORRECT ANSWER: C

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30
Q

What should you look for when inspecting the vehicle’s frame?
* A) The color of the frame
* B) Any cracks, bends, or damage
* C) The length of the frame
* D) The frame’s brand

A

CORRECT ANSWER: B

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31
Q

What should you do if the vehicle’s wipers are not working properly?
* A) Ignore the problem
* B) Report the issue and replace the wipers before driving
* C) Use the wipers less frequently
* D) Drive slowly in case of rain

A

CORRECT ANSWER: B

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32
Q

What should you do if your vehicle hydroplanes?
* A) Brake hard immediately
* B) Turn sharply to regain traction
* C) Ease off the accelerator and steer straight
* D) Accelerate to break the water surface

A

CORRECT ANSWER: C

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33
Q

What is the purpose of a “cargo securement” inspection?
* A) To check for engine leaks
* B) To ensure that all cargo is properly loaded and secured
* C) To verify tire pressure
* D) To clean the cargo area

A

CORRECT ANSWER: B

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34
Q

What is the maximum allowable leakage rate for a combination vehicle with the engine off and brakes released?
* A) 1 PSI per minute
* B) 2 PSI per minute
* C) 3 PSI per minute
* D) 4 PSI per minute

A

CORRECT ANSWER: C

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35
Q

How should you position the tractor when uncoupling the trailer?
* A) Position the tractor straight in line with the trailer
* B) Position the tractor at a slight angle to the trailer
* C) Position the tractor perpendicular to the trailer
* D) Position the tractor with the rear wheels under the trailer

A

CORRECT ANSWER: A

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36
Q

How should you handle turns when driving double or triple trailers?
* A) Make wide, slow turns
* B) Turn as you would with a single trailer
* C) Make sharp, quick turns
* D) Avoid using your mirrors

A

CORRECT ANSWER: A

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37
Q

What is the correct action if a student drops an item while boarding or exiting the bus?
* A) Let the student retrieve it
* B) Retrieve the item for the student
* C) Tell the student to leave it and inform the driver
* D) Ignore it

A

CORRECT ANSWER: C

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38
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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39
Q

What should you do if you encounter road construction while driving a passenger bus?
* A) Speed up to get through quickly
* B) Follow the directions of the construction workers or signs
* C) Honk your horn to clear the way
* D) Take an alternate route immediately

A

CORRECT ANSWER: B

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40
Q

What should you do if you see a vehicle attempting to merge into your lane?
* A) Speed up to block the vehicle
* B) Move over if it is safe to do so
* C) Slow down and allow the vehicle to merge
* D) Honk your horn

A

CORRECT ANSWER: C

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41
Q

Why is it important to check the vehicle’s fuel system during an inspection?
* A) To see if the fuel is the right color
* B) To check for leaks or damage that could cause a fire hazard
* C) To ensure the fuel tank is full
* D) To check the fuel brand

A

CORRECT ANSWER: B

42
Q

How do you check the vehicle’s heater and defroster?
* A) By inspecting their color
* B) By turning them on to ensure they work properly
* C) By checking their brand
* D) By measuring their size

A

CORRECT ANSWER: B

43
Q

What is a “retarder”?
* A) A device that helps slow down the vehicle without using brakes
* B) A type of speed limit sign
* C) A component of the engine cooling system
* D) A fuel-saving device

A

CORRECT ANSWER: A

44
Q

What does “GVWR” stand for?
* A) General Vehicle Weight Regulations
* B) Gross Vehicle Weight Rating
* C) General Vehicle Width Requirements
* D) Gross Vehicle Width Rating

A

CORRECT ANSWER: B

45
Q

How often should automatic slack adjusters be checked?
* A) Daily
* B) Weekly
* C) Monthly
* D) Every six months

A

CORRECT ANSWER: A

46
Q

What is the purpose of the trailer emergency brakes?
* A) To assist in normal stopping
* B) To activate in case of a trailer breakaway
* C) To provide parking braking
* D) To control the trailer’s speed downhill

A

CORRECT ANSWER: B

47
Q

What is the main purpose of the emergency shut-off valve on a tanker?
* A) To release excess pressure
* B) To stop the flow of liquid in an emergency
* C) To vent air from the tank
* D) To clean the tank

A

CORRECT ANSWER: B

48
Q

What should you do if your tanker starts to skid?
* A) Accelerate to gain control
* B) Apply the brakes hard
* C) Steer in the direction of the skid
* D) Turn sharply

A

CORRECT ANSWER: C

49
Q

What is the main purpose of placarding a vehicle transporting hazardous materials?
* A) To improve fuel efficiency
* B) To provide identification and warning information about the hazardous materials being transported
* C) To comply with maintenance regulations
* D) To advertise the trucking company

A

CORRECT ANSWER: B

50
Q

What does the term “segregation” mean in hazardous materials transportation?
* A) Separating hazardous materials from non-hazardous materials
* B) Separating hazardous materials from the driver
* C) Separating incompatible hazardous materials to prevent reactions
* D) Separating hazardous materials by weight

A

CORRECT ANSWER: C

51
Q

What is the function of the converter dolly’s fifth wheel?
* A) To provide additional braking power
* B) To connect the dolly to the trailer
* C) To carry extra cargo
* D) To improve fuel efficiency

A

CORRECT ANSWER: B

52
Q

What is the primary purpose of the air lines on double or triple trailers?
* A) To supply air to the tires
* B) To cool the brakes
* C) To supply air to the brake system
* D) To provide air conditioning to the trailers

A

CORRECT ANSWER: C

53
Q

Why is it important to use the interior lights when loading and unloading students in the dark?
* A) To make the bus look more attractive
* B) To provide better visibility for the driver and students
* C) To signal to other drivers
* D) To save battery power

A

CORRECT ANSWER: B

54
Q

When should you activate the red flashing lights on a school bus?
* A) When approaching a railroad crossing
* B) When students are loading or unloading
* C) When driving through a school zone
D) When passing another vehicle

A

CORRECT ANSWER: B

55
Q

When should the bus’s emergency exit drills be conducted?
* A) Weekly
* B) Monthly
* C) Twice a year
* D) Only in an emergency

A

CORRECT ANSWER: C

56
Q

What is the best way to ensure passengers are seated safely?
* A) By instructing them to sit properly and using seat belts if available
* B) By letting them choose their seats
* C) By telling them to sit quietly
* D) By checking their seating positions before starting the bus

A

CORRECT ANSWER: A

57
Q

What should you inspect on the vehicle’s cargo area?
* A) The cleanliness of the cargo
* B) The security of the cargo and the condition of the cargo doors
* C) The color of the cargo
* D) The weight of the cargo

A

CORRECT ANSWER: B

58
Q

What should you inspect on the vehicle’s frame during an inspection?
* A) The color of the frame
* B) Cracks, bends, or any damage
* C) The length of the frame
* D) The brand of the frame

A

CORRECT ANSWER: B

59
Q

How should a driver handle a curve in the road when driving a heavy vehicle?
* A) Accelerate through the curve
* B) Brake hard in the middle of the curve
* C) Slow down before entering the curve
* D) Drive through the curve at the posted speed limit

A

CORRECT ANSWER: C

60
Q

When must a driver complete a new log entry?
* A) At the beginning of each week
* B) At the start of each work shift
* C) At the end of each work shift
* D) Every two hours during the shift

A

CORRECT ANSWER: B

61
Q

What should you do after raising the landing gear during coupling?
* A) Apply the trailer brakes
* B) Conduct a walk-around inspection
* C) Lower the trailer suspension
* D) Disconnect the air lines

A

CORRECT ANSWER: B

62
Q

Why should you avoid overfilling a tanker?
* A) To reduce the weight of the vehicle
* B) To allow for expansion of the liquid
* C) To improve fuel efficiency
* D) To prevent the tank from leaking

A

CORRECT ANSWER: B

63
Q

How should you handle a fire involving hazardous materials?
* A) Attempt to put out the fire yourself
* B) Move the vehicle to a safe location
* C) Evacuate the area and call emergency services
* D) Use water to extinguish the fire

A

CORRECT ANSWER: C

64
Q

What should you do if hazardous materials are spilled during transport?
* A) Ignore the spill if it is small
* B) Attempt to clean up the spill yourself
* C) Follow your company’s emergency procedures and notify the proper authorities
* D) Continue driving to the nearest service station

A

CORRECT ANSWER: C

65
Q

What should you check after coupling a converter dolly to a rear trailer?
* A) The tire pressure
* B) The alignment of the trailers
* C) The coupling is secure and the brakes are connected
* D) The cargo weight

A

CORRECT ANSWER: C

66
Q

What should you do if a fight breaks out on the school bus?
* A) Keep driving and address it later
* B) Pull over to a safe location and intervene if safe to do so
* C) Yell at the students to stop
* D) Call the police immediately

A

CORRECT ANSWER: B

67
Q

What is the proper way to approach a school bus stop?
* A) Speed up and stop quickly
* B) Approach cautiously, using the amber warning lights
* C) Stop and wait for students to approach the bus
* D) Approach with the stop arm already extended

A

CORRECT ANSWER: B

68
Q

What should you do if the bus becomes disabled while on the route?
* A) Stay on the bus and wait for help
* B) Evacuate the passengers and wait for a tow truck
* C) Call for help and keep passengers on the bus unless it’s unsafe
* D) Have the passengers push the bus

A

CORRECT ANSWER: C

69
Q

When driving in heavy traffic, how should you maintain a safe following distance?
* A) Follow the vehicle in front of you closely
* B) Use the “one-second per 10 feet of vehicle length” rule
* C) Follow the “three-second rule”
* D) Use the “four-second rule”

A

CORRECT ANSWER: B

70
Q

How do you check the vehicle’s brakes?
* A) By looking at them
* B) By feeling for vibrations or hearing unusual noises during braking
* C) By smelling the brakes
* D) By inspecting the brake fluid color

A

CORRECT ANSWER: B

71
Q

What is the correct way to change lanes in a commercial vehicle?
* A) Use mirrors, signal, and change lanes quickly
* B) Signal and change lanes immediately
* C) Use mirrors, signal, check blind spots, and change lanes slowly
* D) Change lanes without signaling

A

CORRECT ANSWER: C

72
Q

What does “GVWR” stand for?
* A) General Vehicle Weight Regulations
* B) Gross Vehicle Weight Rating
* C) General Vehicle Width Requirements
* D) Gross Vehicle Width Rating

A

CORRECT ANSWER: B

73
Q

How often should cargo be inspected on a trip?
* A) Every 50 miles
* B) Every 100 miles
* C) Within the first 50 miles and every 150 miles or 3 hours thereafter
* D) Only at the start of the trip

A

CORRECT ANSWER: C

74
Q

What is the purpose of bulkheads in a tanker?
* A) To divide the tank into smaller sections to reduce surge
* B) To increase the tank’s capacity
* C) To separate different types of liquids
* D) To improve fuel efficiency

A

CORRECT ANSWER: A

75
Q

What does the term “reportable quantity” refer to in hazardous materials transportation?
* A) The amount of hazardous material that triggers the need for a spill report
* B) The total weight of the vehicle
* C) The number of containers being transported
* D) The number of miles driven

A

CORRECT ANSWER: A

76
Q

What should you do before uncoupling a second trailer?
* A) Apply the brakes
* B) Drain the air tanks
* C) Ensure the trailer wheels are chocked
* D) Disconnect the electrical lines

A

CORRECT ANSWER: C

77
Q

How should you check the vehicle’s parking brake?
* A) By inspecting its color
* B) By engaging it and attempting to move the vehicle slightly to ensure it holds
* C) By checking the parking brake’s brand
* D) By measuring its size

A

CORRECT ANSWER: B

78
Q

What is the most important reason for performing a vehicle inspection?
* A) To meet legal requirements
* B) To ensure vehicle safety
* C) To check for cleanliness
* D) To adjust mirrors

A

CORRECT ANSWER: B

79
Q

How can you determine if your tanker is equipped with baffles or bulkheads?
* A) Check the vehicle’s registration
* B) Look at the outside of the tank
* C) Refer to the vehicle’s manual or specifications
* D) Listen for liquid movement

A

CORRECT ANSWER: C

80
Q

How should you drive a tanker on a downgrade?
* A) Use a lower gear and controlled braking
* B) Speed up to maintain control
* C) Use the parking brake intermittently
* D) Shift to a higher gear

A

CORRECT ANSWER: A

81
Q

What should you check for when inspecting the manhole covers on a tanker?
* A) That they are clean
* B) That they are properly secured and free of leaks
* C) That they are painted
* D) That they are lubricated

A

CORRECT ANSWER: B

82
Q

What is the significance of the “Hazardous Materials Table” in the HMR?
* A) It lists the maintenance requirements for vehicles
* B) It provides information on the classification, packaging, and labeling of hazardous materials
* C) It details the fuel efficiency of different vehicles
* D) It outlines the driver’s schedule

A

CORRECT ANSWER: B

83
Q

What is the correct way to handle damaged containers of hazardous materials?
* A) Ignore the damage and continue transporting
* B) Report the damage and follow proper safety protocols for handling
* C) Transfer the contents to another container without wearing protective gear
* D) Clean the outside of the container and continue

A

CORRECT ANSWER: B

84
Q

What is the purpose of the “Hazardous Materials Table” in the HMR?
* A) To list vehicle maintenance requirements
* B) To provide information on the classification, packaging, and labeling of hazardous materials
* C) To detail the fuel efficiency of different vehicles
* D) To outline the driver’s schedule

A

CORRECT ANSWER: B

85
Q

How should you approach a curve when pulling double or triple trailers?
* A) Accelerate through the curve
* B) Brake hard in the middle of the curve
* C) Slow down before entering the curve
* D) Maintain your speed through the curve

A

CORRECT ANSWER: C

86
Q

When parking double or triple trailers, what should you use to ensure they do not move?
* A) The parking brake
* B) Wheel chocks
* C) The trailer hand valve
* D) The emergency brake

A

CORRECT ANSWER: B

87
Q

How should you handle a student who is fighting on the bus?
* A) Keep driving and address it later
* B) Call the police immediately
* C) Yell at the students to stop
* D) Pull over to a safe location and intervene if safe to do so

A

CORRECT ANSWER: D

88
Q

When is it necessary to use the bus’s four-way flashers?
* A) When driving in heavy traffic
* B) When making a left turn
* C) When the bus is stopped on the side of the road
* D) When approaching a railroad crossing

A

CORRECT ANSWER: C

89
Q

What is the importance of checking the vehicle’s reflectors and reflective tape?
* A) To see if they are clean
* B) To ensure they are present and in good condition for visibility
* C) To check their color
* D) To inspect their size

A

CORRECT ANSWER: B

90
Q

When is it necessary to use the bus’s four-way flashers?
* A) When driving in heavy traffic
* B) When making a left turn
* C) When the bus is stopped on the side of the road
* D) When approaching a railroad crossing

A

CORRECT ANSWER: C

91
Q

How can you help ensure the safety of students crossing the road after unloading?
* A) By telling them to run quickly
* B) By using the stop arm and ensuring all traffic has stopped
* C) By using a whistle
* D) By having them exit through the rear door

A

CORRECT ANSWER: B

92
Q

What is the minimum required tread depth for rear 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: A

93
Q

What should you do if your vehicle starts to jackknife?
* A) Accelerate to straighten out
* B) Apply the brakes hard
* C) Release the brakes and steer into the skid
* D) Turn off the engine

A

CORRECT ANSWER: C

94
Q

What should you do if the bus becomes disabled while on the route?
* A) Stay on the bus and wait for help
* B) Evacuate the passengers and wait for a tow truck
* C) Call for help and keep passengers on the bus unless it’s unsafe
* D) Have the passengers push the bus

A

CORRECT ANSWER: C

95
Q

What should you do if hazardous materials are involved in a collision?
* A) Attempt to clean up the materials yourself
* B) Call emergency services and provide them with the shipping papers
* C) Continue driving to avoid blocking traffic
* D) Move the materials to a safer location

A

CORRECT ANSWER: B

96
Q

How often should cargo be inspected on a trip?
* A) Every 50 miles
* B) Every 100 miles
* C) Within the first 50 miles and every 150 miles or 3 hours thereafter
* D) Only at the start of the trip

A

CORRECT ANSWER: C

97
Q

What should you do if you need to park a loaded tanker vehicle on a hill?
* a) Park with the front of the vehicle facing uphill
* b) Park with the rear of the vehicle facing uphill
* c) Use wheel chocks and parking brakes
* d) Leave the engine running

A

CORRECT ANSWER: C

98
Q

What is the correct 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

99
Q

What does the term “hazmat employer” refer to?
* A) The driver of the vehicle
* B) The company or individual who offers hazardous materials for transportation
* C) The recipient of hazardous materials
D) The vehicle’s mechanic

A

CORRECT ANSWER: B

100
Q

Why is it important to check the vehicle’s registration and insurance documents?
* A) To ensure they are the right color
* B) To verify they are up to date and legally compliant
* C) To check their brand
* D) To inspect their size

A

CORRECT ANSWER: B

CDL Study Guide (5 decks)

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