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CDL Study Guide > 5˚ TEST > Flashcards

5˚ TEST Flashcards

1
Q

What is the function 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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2
Q

What should you do if your vehicle gets stuck on a railroad crossing?
* A) Try to push the vehicle off the tracks
* B) Get out and call the emergency number on the sign
* C) Stay in the vehicle and signal for help
* D) Attempt to restart the vehicle and drive off

A

CORRECT ANSWER: B

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3
Q

How should a driver approach a construction zone?
* A) Speed up to pass through quickly
* B) Slow down, follow signs, and be alert for workers
* C) Ignore the signs if no workers are visible
* D) Use the shoulder to bypass traffic

A

CORRECT ANSWER: B

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4
Q

Why is it important to know the specific gravity of the liquid you are transporting?
* a) To calculate the volume of the liquid
* b) To determine the weight and handling characteristics of the load
* c) To know the color of the liquid
* d) To ensure the liquid does not freeze

A

CORRECT ANSWER: B

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5
Q

Why is it important to know the inhalation hazards of the materials you are transporting?
* A) To determine the correct route
* B) To calculate the transportation time
* C) To take necessary precautions to protect yourself and others from toxic exposure
* D) To ensure timely delivery

A

CORRECT ANSWER: C

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6
Q

What should you do if you are transporting hazardous materials and need to stop at a rest area?
* A) Park as close to other vehicles as possible
* B) Park in a designated area away from other vehicles and populated areas
* C) Park near a water source
* D) Park on an incline

A

CORRECT ANSWER: B

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7
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

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8
Q

What is “Gross Combination Weight” (GCW)?
* A) The weight of the vehicle without cargo
* B) The total weight of the vehicle and cargo combined
* C) The weight of the cargo only
* D) The maximum weight allowed on a bridge

A

CORRECT ANSWER: B

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9
Q

What is a “pull-up” in backing maneuvers?
* A) Moving forward to reposition the vehicle during backing
* B) Completing a backup without stopping
* C) A type of emergency stop
* D) A quick reverse maneuver

A

CORRECT ANSWER: A

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10
Q

What is the primary cause of skidding in commercial vehicles?
* A) Excessive acceleration
* B) Oversteering
* C) Driving too fast for conditions
* D) Underinflated tires

A

CORRECT ANSWER: C

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11
Q

When inspecting the vehicle’s driveline, what should you look for?
* A) The color of the driveshaft
* B) Any loose, damaged, or missing parts
* C) The length of the driveshaft
* D) The brand of the driveshaft

A

CORRECT ANSWER: B

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12
Q

How should you approach a bus stop where passengers are waiting?
* A) Speed up to arrive on time
* B) Approach slowly and with caution
* C) Honk the horn to alert the passengers
* D) Turn off the bus’s lights

A

CORRECT ANSWER: B

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13
Q

How should a driver approach a construction zone?
* A) Speed up to pass through quickly
* B) Slow down, follow signs, and be alert for workers
* C) Ignore the signs if no workers are visible
* D) Use the shoulder to bypass traffic

A

CORRECT ANSWER: B

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14
Q

What is “gross combination weight” (GCW)?
* A) The weight of the vehicle without cargo
* B) The total weight of the vehicle and cargo combined
* C) The weight of the cargo only
* D) The maximum weight allowed on a bridge

A

CORRECT ANSWER: B

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15
Q

What should you do if you find a problem during a post-trip inspection?
* A) Ignore it and go home
* B) Drive slowly until it can be fixed
* C) Fix it yourself
* D) Report the issue and document it for repair

A

CORRECT ANSWER: D

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16
Q

What is the purpose of the wheelchair lift or ramp on a passenger bus?
* A) To allow passengers with mobility issues to board and exit the bus
* B) To assist in loading luggage
* C) To provide extra seating
* D) To store emergency equipment

A

CORRECT ANSWER: A

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17
Q

What should you check during a post-trip inspection?
* A) Fuel levels
* B) Cargo weight
* C) Vehicle lights, brakes, and tires
* D) Driver’s logbook

A

CORRECT ANSWER: C

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18
Q

How do you check the vehicle’s air compressor and governor cut-in and cut-out pressure?
* A) By listening for unusual sounds
* B) By using the air pressure gauge to ensure the pressure is within the proper range
* C) By inspecting the air compressor color
* D) By checking the air hose length

A

CORRECT ANSWER: B

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19
Q

What is a “pull-up” in backing maneuvers?
* A) Moving forward to reposition the vehicle during backing
* B) Completing a backup without stopping
* C) A type of emergency stop
* D) A quick reverse maneuver

A

CORRECT ANSWER: A

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20
Q

What is the primary cause of skidding in commercial vehicles?
* A) Excessive acceleration
* B) Oversteering
* C) Driving too fast for conditions
* D) Underinflated tires

A

CORRECT ANSWER: C

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21
Q

What should you look for when inspecting the vehicle’s hoses?
* A) The color of the hoses
* B) Leaks, cracks, and proper connections
* C) The length of the hoses
* D) The brand of the hoses

A

CORRECT ANSWER: B

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22
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

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23
Q

How should you load hazardous materials to ensure stability during transport?
* A) Distribute the weight evenly and secure all items properly
* B) Load all heavy items on one side
* C) Stack all containers on top of each other
* D) Load the lightest items first

A

CORRECT ANSWER: A

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24
Q

What should you do if you discover a hazardous materials spill at a rest stop?
* A) Leave the area immediately
* B) Cover the spill with dirt
* C) Attempt to clean up the spill yourself
* D) Report the spill to the rest stop authorities and follow emergency procedures

A

CORRECT ANSWER: D

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25
Q

How should you approach a bus stop where passengers are waiting?
* A) Speed up to arrive on time
* B) Approach slowly and with caution
* C) Honk the horn to alert the passengers
* D) Turn off the bus’s lights

A

CORRECT ANSWER: B

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26
Q

What is the purpose of an antilock braking system (ABS)?
* A) To prevent the brakes from overheating
* B) To increase engine power
* C) To reduce brake wear
* D) To help prevent wheel lockup during braking

A

CORRECT ANSWER: D

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27
Q

What should you check during a post-trip inspection?
* A) Fuel levels
* B) Cargo weight
* C) Vehicle lights, brakes, and tires
* D) Driver’s logbook

A

CORRECT ANSWER: C

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28
Q

What does a “load lock” do?
* A) Secures cargo to prevent movement
* B) Locks the trailer doors
* C) Prevents theft of the load
* D) Balances the load weight

A

CORRECT ANSWER: A

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29
Q

What should a driver do if they miss an exit on the highway?
* A) Reverse on the shoulder
* B) Make a U-turn at the next opportunity
* C) Continue to the next exit
* D) Stop and wait for assistance

A

CORRECT ANSWER: C

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29
Q

What information is provided by the hazard class of a material?
* A) The fuel efficiency of the vehicle
* B) The type of hazard the material presents
* C) The weight of the vehicle
* D) The driver’s license number

A

CORRECT ANSWER: B

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30
Q

How often must a driver take a 30-minute break according to hours-of-service regulations?
* A) After 4 hours of driving
* B) After 6 hours of driving
* C) After 8 hours of driving
* D) After 10 hours of driving

A

CORRECT ANSWER: C

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31
Q

What is the purpose of a hazmat driver’s route plan?
* A) To find the shortest route
* B) To identify the safest and most efficient route for transporting hazardous materials
* C) To avoid toll roads
* D) To maximize fuel efficiency

A

CORRECT ANSWER: B

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32
Q

What does a “load lock” do?
* A) Secures cargo to prevent movement
* B) Locks the trailer doors
* C) Prevents theft of the load
* D) Balances the load weight

A

CORRECT ANSWER: A

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33
Q

How often must a driver take a 30-minute break according to hours-of-service regulations?
* A) After 4 hours of driving
* B) After 6 hours of driving
* C) After 8 hours of driving
* D) After 10 hours of driving

A

CORRECT ANSWER: C

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34
Q

What should a driver do if they miss an exit on the highway?
* A) Reverse on the shoulder
* B) Make a U-turn at the next opportunity
* C) Continue to the next exit
* D) Stop and wait for assistance

A

CORRECT ANSWER: C

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35
Q

What is the first step you should take when conducting a post-trip inspection?
* A) Check for lost items
* B) Ensure all students have exited the bus
* C) Clean the bus
* D) Check the fuel level

A

CORRECT ANSWER: B

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36
Q

How often should you inspect the air brake hoses and lines for wear and damage?
A) daily
B) weekly
C) monthly
D) annually

A

CORRECT ANSWER: A

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37
Q

What component in an air brake system prevents air from escaping back to the compressor?
A) air dryer
B) check valve
C) safety valve
D) supply valve

A

CORRECT ANSWER: B

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38
Q

What should you do if you experience brake fade?
* A) Pump the brakes quickly
* B) Stop and let the brakes cool
* C) Use the parking brake
* D) Accelerate to reduce pressure on the brakes

A

CORRECT ANSWER: B

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39
Q

What is a “No Zone” in terms of commercial driving?
* A) A restricted parking area
* B) A designated rest area
* C) A blind spot where cars disappear from the view of the truck driver
* D) A toll booth area

A

CORRECT ANSWER: C

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40
Q

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

A

CORRECT ANSWER: B

41
Q

What is the primary purpose of the electronic logging device (ELD) mandate?
* A) To track vehicle speed
* B) To monitor driver hours and ensure compliance with hours-of-service regulations
* C) To provide GPS navigation
* D) To record cargo weight

A

CORRECT ANSWER: B

42
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

43
Q

What should you do if you discover that the placards on your vehicle are incorrect?
* A) Ignore the issue and continue driving
* B) Replace the placards immediately
* C) Cover the placards with tape
* D) Report the issue at the destination

A

CORRECT ANSWER: B

44
Q

When should you use the parking brake on a passenger bus?
A) only in emergency situations
B) when loading or unloading passengers
C) every time you park the bus
D) only when parked on an incline

A

CORRECT ANSWER: C

44
Q

When should you activate the hazard lights on a passenger bus?
A) when driving through a school zone
B) when the bus is stopped on the side of the road
C) when making a left turn
D) when approaching a bus stop

A

CORRECT ANSWER: B

45
Q

What is the main function of the emergency air line?
A) to supply air to the trailer air tanks
B) to control the service brakes on the trailer
C) to engage the trailer brakes in case of a breakaway
D) to supply air to the brake chambers

A

CORRECT ANSWER: C

46
Q

How should you handle a passenger who refuses to wear a seat belt?
A) ignore the passenger
B) yell at the passenger
C) politely remind the passenger of the seat belt requirement
D) have another passenger enforce the rule

A

CORRECT ANSWER: C

47
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

48
Q

What is the primary purpose of the placards on a vehicle transporting hazardous materials?
A) to increase fuel efficiency
B) to identify the vehicle
C) to warn of the presence of hazardous materials
D) to indicate the vehicle’s speed

A

CORRECT ANSWER: C

49
Q

What should you do if you feel a surge when braking a tanker?
A) speed up to stabilize the liquid
B) steer sharply to counteract the surge
C) apply the brakes gently and evenly
D) use the parking brake

A

CORRECT ANSWER: C

50
Q

What is the primary purpose of a pre-trip inspection on a passenger bus?
A) to check for cleanliness
B) to ensure the bus is safe to operate
C) to count the number of passengers
D) to check the fuel level

A

CORRECT ANSWER: B

51
Q

How often should you check the 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

52
Q

What is the primary purpose of a vehicle inspection?
A) To check the color of the vehicle
B) To ensure the vehicle is safe to operate
C) To verify the vehicle’s age
D) To assess the vehicle’s brand

A

CORRECT ANSWER: B

53
Q

How often should a pre-trip inspection be conducted?
A) Once a week
B) Once a month
C) Before every trip
D) Only when the vehicle is new

A

CORRECT ANSWER: C

54
Q

What should you do if you see the rear trailer starting to weave while driving?
A) speed up to stabilize it
B) apply the trailer hand valve
C) slow down gradually
D) use the parking brake

A

CORRECT ANSWER: C

55
Q

When coupling a second trailer, where should the converter dolly be positioned initially?
A) directly under the rear trailer
B) behind the first trailer
C) beside the first trailer
D) in front of the second trailer

A

CORRECT ANSWER: B

56
Q

How should you test the coupling of the rear trailer before driving?
A) visual inspection
B) listening for unusual sounds
C) perform a tug test
D) check the air pressure gauge

A

CORRECT ANSWER: C

57
Q

When is it necessary to use the parking brakes on a trailer with air brakes?
A) only when parked on an incline
B) only when the vehicle is loaded
C) anytime the trailer is parked
D) only during pre-trip inspections

A

CORRECT ANSWER: C

57
Q

What should you check for when inspecting the brake shoes or pads?
A) Brand name
B) Thickness and signs of excessive wear
C) Color
D) Size

A

CORRECT ANSWER: B

58
Q

How should you inspect the vehicle’s wheels and rims?
A) Color and brand
B) Measure the wheel size
C) Check for cracks, bends, or damage
D) Check the wheel’s design

A

CORRECT ANSWER: C

59
Q

What should you ensure when checking the vehicle’s turn signals?
A) Color of the signal lights
B) Brand of the signal lights
C) Proper functioning and correct color
D) Size of the signal lights

A

CORRECT ANSWER: C

60
Q

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

A

CORRECT ANSWER: C

61
Q

What should you check for when inspecting the brake shoes or pads during a pre-trip inspection?
A) brand name
B) thickness and signs of excessive wear
C) color
D) size

A

CORRECT ANSWER: B

62
Q

How do you ensure the fuel tank is secure during an inspection?
A) Check the color of the tank
B) Verify the brand of the tank
C) Ensure it is securely mounted and not leaking
D) Measure the tank’s capacity

A

CORRECT ANSWER: C

62
Q

What is the most important factor in selecting a safe speed for driving?
* A) Posted speed limits
* B) Road and weather conditions
* C) The weight of the vehicle
* D) The type of cargo being carried

A

CORRECT ANSWER: B

63
Q

What could be a sign that your brakes are fading?
A) the brake pedal feels spongy
B) the brakes start to smoke
C) the brake pedal goes to the floor
D) all of the above

A

CORRECT ANSWER: D

64
Q

What should a driver do if they experience brake fade?
* A) Pump the brakes quickly
* B) Stop and let the brakes cool
* C) Use the parking brake
* D) Accelerate to reduce pressure on the brakes

A

CORRECT ANSWER: B

65
Q

What should you do if you hear unusual noises coming from the bus while driving?
A) turn up the radio to drown out the noise
B) continue driving and report it at the end of the route
C) stop the bus in a safe location and investigate
D) ignore it

A

CORRECT ANSWER: C

66
Q

How should you handle a situation where a passenger is harassing other passengers?
A) ignore it
B) stop the bus in a safe location and address the behavior
C) allow the other passengers to handle it
D) yell at the passenger to stop

A

CORRECT ANSWER: B

67
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

68
Q

What should you do if the spring brakes activate while you are driving?
A) speed up to release the brakes
B) continue driving to the nearest service station
C) pull over and stop as soon as it is safe to do so
D) pump the brake pedal

A

CORRECT ANSWER: C

69
Q

What is the purpose of the “Dangerous Goods Declaration”?
* A) To declare the vehicle’s fuel efficiency
* B) To provide information about the hazardous materials being transported
* C) To declare the driver’s training status
* D) To list the vehicle’s maintenance history

A

CORRECT ANSWER: B

70
Q

What is the maximum allowable length for a commercial vehicle?
* A) 50 feet
* B) 60 feet
* C) 70 feet
* D) 80 feet

A

CORRECT ANSWER: C

71
Q

How do you ensure the fuel tank is secure during an inspection?
A) check the color of the tank
B) ensure it is securely mounted and not leaking
C) verify the brand of the tank
D) measure the tank’s capacity

A

CORRECT ANSWER: B

72
Q

How should a driver approach a railroad crossing in a commercial vehicle?
* A) Speed up to clear the tracks quickly
* B) Stop, look, listen, and then proceed
* C) Proceed without stopping if no train is visible
* D) Turn on emergency flashers and cross slowly

A

CORRECT ANSWER: B

73
Q

What is the “fifth wheel” used for in commercial vehicles?
* A) To support the trailer and allow it to pivot
* B) To provide an extra tire in case of a flat
* C) To balance the load weight
* D) To increase fuel efficiency

A

CORRECT ANSWER: A

74
Q

How can you check the low air pressure warning signal?
A) step on and off the brake pedal to reduce air pressure
B) increase engine speed to build air pressure
C) release the parking brakes and listen for a warning sound
D) apply the service brakes

A

CORRECT ANSWER: A

75
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

76
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

77
Q

What does the term “hazmat incident” refer to?
* A) Any event during transportation that involves the release or potential release of hazardous materials
* B) A minor vehicle malfunction
* C) A delay in delivery
* D) An inspection by authorities

A

CORRECT ANSWER: A

78
Q

What is the function of the service relay valve?
A) to control the application of the trailer service brakes
B) to control the trailer emergency brakes
C) to regulate the air pressure in the service line
D) to supply air to the air tanks

A

CORRECT ANSWER: A

79
Q

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

A

CORRECT ANSWER: A

80
Q

What should you do before pulling away with a double or triple trailer?
A) check your mirrors
B) perform a tug test
C) sound the horn
D) turn on your headlights

A

CORRECT ANSWER: B

81
Q

What is the maximum air loss rate for a straight truck or bus with the engine off and the brakes applied?
A) 1 psi per minute
B) 2 psi per minute
C) 3 psi per minute
D) 4 psi per minute

A

CORRECT ANSWER: C

82
Q

What is the definition of “overweight” for a commercial vehicle?
* A) Exceeding the speed limit
* B) Carrying cargo beyond the vehicle’s weight rating
* C) Having underinflated tires
* D) Driving with too many passengers

A

CORRECT ANSWER: B

83
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

84
Q

What is the correct way to approach a low bridge with insufficient clearance?
* A) Speed up and hope for the best
* B) Stop, assess the situation, and find an alternate route
* C) Drive on the shoulder to bypass the bridge
* D) Reverse back to the previous exit

A

CORRECT ANSWER: B

85
Q

What should you look for when inspecting the vehicle’s seat belts?
A) Color and brand
B) Length of the belts
C) Frays, cuts, and proper operation
D) Comfort of the belts

A

CORRECT ANSWER: C

86
Q

How should you test the trailer service brakes?
A) pull the trailer hand valve while moving forward slowly
B) apply the parking brakes and attempt to move the vehicle
C) release the trailer emergency brakes
D) pump the brake pedal repeatedly

A

CORRECT ANSWER: A

87
Q

What should a driver do if they experience a tire blowout?
* A) Immediately brake hard
* B) Hold the steering wheel firmly and ease off the accelerator
* C) Accelerate to regain control
* D) Turn sharply to the side of the road

A

CORRECT ANSWER: B

88
Q

How do you check the vehicle’s radiator and cooling system?
A) Inspect the color of the radiator
B) Look for leaks, proper coolant level, and secure cap
C) Measure the radiator’s dimensions
D) Check the brand of the coolant

A

CORRECT ANSWER: B

89
Q

What should you do before driving a vehicle with a dual air brake system?
A) drain the air tanks
B) pump the brake pedal repeatedly
C) allow the system to build up to a minimum of 100 psi in both primary and secondary systems
D) engage the parking brake

A

CORRECT ANSWER: C

90
Q

What does the term “hours of service” refer to?
* A) The total time a driver can be on duty, including driving and rest periods
* B) The time spent driving only
* C) The time spent loading and unloading cargo
* D) The time spent on maintenance

A

CORRECT ANSWER: A

91
Q

What should you do if your vehicle gets stuck on a railroad crossing?
* A) Try to push the vehicle off the tracks
* B) Get out and call the emergency number on the sign
* C) Stay in the vehicle and signal for help
* D) Attempt to restart the vehicle and drive off

A

CORRECT ANSWER: B

92
Q

When should the low air pressure warning signal come on?
A) at 100 psi
B) at 80 psi
C) at 60 psi
D) at 40 psi

A

CORRECT ANSWER: C

93
Q

What is the “fifth wheel” used for in commercial vehicles?
* A) To support the trailer and allow it to pivot
* B) To provide an extra tire in case of a flat
* C) To balance the load weight
* D) To increase fuel efficiency

A

CORRECT ANSWER: A

94
Q

What should you inspect on the vehicle’s mirrors for proper visibility?
A) Manufacturer’s logo
B) Cleanliness and correct adjustment
C) Mirror size
D) Color of the mirror housing

A

CORRECT ANSWER: B

95
Q

what can cause an air brake system to develop excessive pressure?
A) a malfunctioning air compressor
B) a blocked air dryer
C) a faulty governor
D) all of the above

A

CORRECT ANSWER: D

96
Q

How often should emergency evacuation drills be conducted on passenger bus?
* A) monthly
* B) every six month
* C) twice a year
* D) annually

A

CORRECT ANSWER: C

CDL Study Guide (5 decks)

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