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CDL Study Guide > 3˚ TEST > Flashcards

3˚ TEST Flashcards

1
Q

What should a driver do if their brakes fail on a downgrade?
* A) Turn off the engine
* B) Downshift and use the engine braking
* C) Speed up to find an emergency exit ramp
* D) Pump the brakes rapidly

A

CORRECT ANSWER: B

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2
Q

When should you use the trailer hand valve?
* A) To test the trailer brakes
* B) As a parking brake
* C) During normal driving
* D) To release the spring brakes

A

CORRECT ANSWER: A

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3
Q

What is the purpose of the brake chamber?
* A) To convert air pressure into mechanical force to apply the brakes
* B) To store compressed air
* C) To filter the air entering the brake system
* D) To vent excess air pressure

A

CORRECT ANSWER: A

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4
Q

What should you do after disconnecting the air lines and electrical cables during uncoupling?
* A) Secure the air lines and electrical cables
* B) Raise the landing gear
* C) Release the trailer brakes
* D) Check the trailer lights

A

CORRECT ANSWER: A

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5
Q

How often should you check the tank and its fittings during a trip?
* A) Once at the start of the trip
* B) Every 100 miles
* C) Every time you stop
* D) Only at the end of the trip

A

CORRECT ANSWER: C

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6
Q

What is the most important thing to do when loading a liquid tank?
* A) Load quickly to save time
* B) Ensure the load is balanced
* C) Keep the tank half-full
* D) Use the smallest compartments first

A

CORRECT ANSWER: B

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7
Q

How should you position your vehicle when parking with hazardous materials?
* A) As close to the road as possible
* B) In a safe location, away from populated areas and open flames
* C) On an incline
* D) Next to other vehicles carrying hazardous materials

A

CORRECT ANSWER: B

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8
Q

What should you do if you discover a small leak in a hazardous materials container during transport?
* A) Continue driving and report it at the destination
* B) Stop immediately and report the leak according to your company’s emergency procedures
* C) Speed up to reduce the leak
* D) Ignore it if the leak is small

A

CORRECT ANSWER: B

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9
Q

What should you do if your trailers begin to sway?
* A) Accelerate to regain control
* B) Apply the brakes firmly
* C) Slow down and steer straight
* D) Use the trailer hand valve

A

CORRECT ANSWER: C

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10
Q

How should you approach a downhill grade when driving doubles or triples?
* A) Use a higher gear
* 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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11
Q

What should you do if you see a vehicle illegally passing your stopped school bus?
* A) Honk the horn
* B) Yell at the driver
* C) Report the vehicle’s license plate number to the authorities
* D) Chase the vehicle

A

CORRECT ANSWER: C

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12
Q

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

A

CORRECT ANSWER: C

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13
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

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14
Q

What is the proper procedure for handling a passenger who is smoking on the bus?
* A) Ignore it
* B) Yell at the passenger
* C) Politely remind the passenger that smoking is not allowed
* D) Allow it as long as it doesn’t bother other passengers

A

CORRECT ANSWER: C

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15
Q

What should you do if you find a minor defect during a vehicle inspection?
* A) Ignore it and continue driving
* B) Report it and monitor it for changes
* C) Fix it immediately
* D) Drive faster to avoid problems

A

CORRECT ANSWER: B

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16
Q

How should you check the vehicle’s drive shaft?
* A) By inspecting its color
* B) By ensuring it is not bent, cracked, or loose, and all parts are securely mounted
* C) By measuring its length
* D) By checking the brand of the drive shaft

A

CORRECT ANSWER: B

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17
Q

How often should a driver check their mirrors?
* 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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18
Q

How many hours of off-duty time are required before starting a new work shift?
* A) 8 hours
* B) 10 hours
* C) 12 hours
* D) 14 hours

A

CORRECT ANSWER: B

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19
Q

What is the purpose of the brake chamber?
* A) To convert air pressure into mechanical force to apply the brakes
* B) To store compressed air
* C) To filter the air entering the brake system
D) To vent excess air pressure

A

CORRECT ANSWER: A

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20
Q

Why is it important to conduct a walk-around inspection after coupling the trailer?
* A) To check for any visible damage to the tractor
* B) To ensure all connections are secure and there are no air leaks
* C) To verify the load is balanced
* D) To clean the trailer

A

CORRECT ANSWER: B

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21
Q

What should you do if you discover a leak in your tanker?
* A) Continue to your destination
* B) Speed up to reduce the leak
* C) Stop immediately and fix the leak
* D) Report the leak and follow emergency procedures

A

CORRECT ANSWER: C

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22
Q

How often should you check the cargo and securement devices during a trip?
* A) Every time you stop
* B) At the start of the trip
* C) Once a day
* D) Only at the end of the trip

A

CORRECT ANSWER: A

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23
Q

What is the primary responsibility of the driver when transporting hazardous materials?
* A) To ensure timely delivery
* B) To ensure the safety of the public and the environment
* C) To maximize fuel efficiency
* D) To maintain the vehicle’s cleanliness

A

CORRECT ANSWER: B

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24
Q

What does the term “inhalation hazard” refer to?
* A) Materials that can be harmful if inhaled
* B) Materials that are explosive
* C) Materials that are flammable
* D) Materials that are corrosive

A

CORRECT ANSWER: A

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25
Q

When parking doubles or triples, what should you use to prevent movement?
* A) The parking brake
* B) Wheel chocks
* C) The trailer hand valve
* D) The emergency brake

A

CORRECT ANSWER: B

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26
Q

What should you do if your trailers begin to jackknife?
* A) Speed up to straighten them out
* B) Apply the brakes hard
* C) Release the brakes and steer in the direction of the skid
* D) Use the trailer hand valve

A

CORRECT ANSWER: C

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27
Q

What is the correct procedure for loading and unloading students at a bus stop?
* A) Load and unload as quickly as possible
* B) Use the stop arm and flashing red lights to control traffic
* C) Only use the stop arm
* D) Only use the flashing red lights

A

CORRECT ANSWER: B

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28
Q

What should a school bus driver do if they notice a vehicle illegally passing their stopped school bus?
* A) Ignore the vehicle
* B) Report the vehicle’s license plate number to the authorities
* C) Chase the vehicle
* D) Yell at the driver

A

CORRECT ANSWER: B

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29
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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30
Q

When should you use the bus’s interior lights?
* A) Only during nighttime
* B) Only during emergency situations
* C) When loading or unloading passengers in the dark
* D) At all times

A

CORRECT ANSWER: C

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31
Q

How do you check the vehicle’s horn?
* A) By looking at it
* B) By pressing it to ensure it works properly
* C) By listening to the radio
* D) By inspecting its color

A

CORRECT ANSWER: B

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32
Q

What should you look for when inspecting the vehicle’s hub oil seals?
* A) The color of the oil
* B) Leaks and proper oil level
* C) The brand of the seals
* D) The size of the seals

A

CORRECT ANSWER: B

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33
Q

What is a “No Zone”?
* A) An area where parking is not allowed
* B) A vehicle’s blind spots
* C) A restricted speed zone
* D) A toll booth area

A

CORRECT ANSWER: B

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34
Q

What is the main purpose of the “10-hour rule” in the hours-of-service regulations?
* A) To limit the number of deliveries a driver can make
* B) To ensure drivers have adequate rest before driving again
* C) To control the amount of cargo a driver can carry
* D) To set speed limits for long-haul routes

A

CORRECT ANSWER: B

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35
Q

How should you check the free play in manual slack adjusters on S-cam brakes?
* A) Park on level ground, chock the wheels, and release the parking brakes
* B) Drive at low speed and apply the brakes
* C) Check the air pressure gauge
* D) Listen for air leaks

A

CORRECT ANSWER: A

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36
Q

How do you test the trailer brakes after coupling?
* A) Use the trailer hand valve
* B) Use the parking brake
* C) Pull the trailer forward
* D) Accelerate quickly

A

CORRECT ANSWER: A

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37
Q

What is the proper way to load a tanker with multiple compartments?
* A) Load each compartment equally
* B) Load the front compartment first
* C) Load the rear compartment first
* D) Load the heaviest liquid last

A

CORRECT ANSWER: A

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38
Q

What is the purpose of the air pressure relief valve on a tanker?
* A) To increase the tank’s capacity
* B) To allow air to enter the tank
* C) To release excess air pressure
* D) To vent hazardous vapors

A

CORRECT ANSWER: C

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39
Q

What should you do if you are involved in an accident while transporting hazardous materials?
* A) Leave the scene immediately
* B) Notify emergency responders and provide them with the shipping papers
* C) Continue driving to the nearest service station
* D) Attempt to clean up the spill yourself

A

CORRECT ANSWER: B

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40
Q

When should you use the “DANGEROUS” placard?
* A) When carrying non-hazardous materials
* B) When carrying mixed loads of hazardous materials
* C) When carrying radioactive materials
* D) When carrying a single class of hazardous material

A

CORRECT ANSWER: B

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41
Q

How can you test the trailer brakes on a double or triple trailer?
* A) By using the trailer hand valve while moving slowly
* B) By applying the parking brake
* C) By releasing the air brakes
* D) By checking the air pressure gauge

A

CORRECT ANSWER: A

42
Q

When should you use the trailer hand valve?
* A) To park the trailer
* B) To test the trailer brakes
* C) To help control your speed when going down steep hills
* D) Only in an emergency to prevent jackknifing

A

CORRECT ANSWER: D

43
Q

What is the correct procedure for loading and unloading students at a bus stop?
* A) Load and unload as quickly as possible
* B) Use the stop arm and flashing red lights to control traffic
* C) Only use the stop arm
* D) Only use the flashing red lights

A

CORRECT ANSWER: B

44
Q

When should you check your school bus’s emergency equipment?
* 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

45
Q

When should you use the bus’s interior lights?
* A) Only during nighttime
* B) Only during emergency situations
* C) When loading or unloading passengers in the dark
* D) At all times

A

CORRECT ANSWER: C

46
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

47
Q

What should you inspect on the vehicle’s exhaust system?
* A) The color of the exhaust
* B) The sound of the exhaust
* C) Any leaks, holes, or missing parts
* D) The temperature of the exhaust

A

CORRECT ANSWER: C

48
Q

How do you check the vehicle’s power steering fluid level?
* A) By checking the fluid’s color
* B) By using the dipstick to ensure the fluid is within the safe range
* C) By smelling the fluid
* D) By checking the fluid’s brand

A

CORRECT ANSWER: B

49
Q

What should you do if you experience a tire blowout?
* A) Brake hard immediately
* 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

50
Q

What is the correct way to 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

51
Q

What should you do if you find that the slack adjusters are out of adjustment?
* A) Ignore it and continue driving
* B) Adjust them immediately
* C) Increase air pressure in the system
* D) Drain the air tanks

A

CORRECT ANSWER: B

52
Q

What should you do if you see the ABS warning light on the trailer?
* A) Continue driving as usual
* B) Stop and inspect the ABS system
* C) Disconnect the ABS
* D) Use the parking brake

A

CORRECT ANSWER: B

53
Q

Why is it important to use caution when driving a tanker in wet conditions?
* A) To avoid getting the liquid dirty
* B) Because the surge can be more difficult to control
* C) To increase fuel efficiency
* D) Because the tank can overheat

A

CORRECT ANSWER: B

54
Q

Why should you avoid sudden braking when driving a tanker?
* A) To prevent tire wear
* B) To avoid spillage of the liquid
* C) To maintain fuel efficiency
* D) To reduce engine strain

A

CORRECT ANSWER: B

55
Q

How should hazardous materials be loaded and unloaded?
* A) Quickly to save time
* B) Carefully, following all safety protocols
* C) Without any protective equipment
* D) Only by the driver

A

CORRECT ANSWER: B

56
Q

What should you do if your vehicle becomes disabled while transporting hazardous materials?
* A) Set out reflective triangles and call for assistance
* B) Leave the vehicle and walk away
* C) Continue driving at a slower speed
* D) Attempt to repair the vehicle yourself

A

CORRECT ANSWER: A

57
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

58
Q

Why is it important to check the weight limits of your double or triple trailers?
* A) To avoid fines and penalties
* B) To ensure proper brake function
* C) To prevent overloading and maintain vehicle control
* D) To increase fuel efficiency

A

CORRECT ANSWER: C

59
Q

Why is it important to conduct a post-trip inspection of the school bus?
* A) To check for lost items and sleeping students
* B) To refuel the bus
* C) To clean the bus
* D) To inspect the tires

A

CORRECT ANSWER: A

60
Q

What is the proper procedure for handling a school bus accident?
* A) Drive to the nearest police station
* B) Remain at the scene, ensure the safety of the students, and call for help
* C) Continue to your destination
* D) Move the bus to a safe location and leave the students unattended

A

CORRECT ANSWER: B

61
Q

How should you handle a situation where a passenger is smoking on the bus?
* A) Ignore it
* B) Yell at the passenger
* C) Politely remind the passenger that smoking is not allowed
* D) Allow it as long as it doesn’t bother other passengers

A

CORRECT ANSWER: C

62
Q

When should you complete a written inspection report for a passenger bus?
* A) At the beginning of each week
* B) At the end of each shift
* C) Every month
* D) Only when problems are found

A

CORRECT ANSWER: B

63
Q

Why is it important to check the vehicle’s battery during an inspection?
* A) To see if it is the right brand
* B) To ensure it is properly secured and has no corrosion or leaks
* C) To check its color
* D) To ensure it is fully charged

A

CORRECT ANSWER: B

64
Q

What should you look for when inspecting the vehicle’s fuel system?
* A) The color of the fuel
* B) Leaks, secure caps, and proper connections
* C) The fuel brand
* D) The size of the fuel tank

A

CORRECT ANSWER: B

65
Q

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

A

CORRECT ANSWER: B

66
Q

What does a “placard” indicate on a commercial vehicle?
* A) The type of cargo being carried
* B) The vehicle’s registration status
* C) The driver’s license class
* D) The route the vehicle will take

A

CORRECT ANSWER: A

67
Q

What is the purpose of the service brake system?
* A) To apply the parking brakes
* B) To apply the brakes during normal driving
* C) To release the spring brakes
* D) To adjust the brake pressure

A

CORRECT ANSWER: B

68
Q

How should you handle a situation where the trailer starts to skid?
* A) Accelerate to regain control
* B) Apply the trailer hand valve
* C) Release the brakes and steer in the direction of the skid
* D) Use the parking brake

A

CORRECT ANSWER: C

69
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

70
Q

How should you park a loaded tanker vehicle on a slope?
* A) With the front of the vehicle facing uphill
* B) With the rear of the vehicle facing uphill
* C) With the tank parallel to the slope
* D) At an angle to the slope

A

CORRECT ANSWER: A

71
Q

What type of training is required for drivers transporting hazardous materials?
* A) Basic driving skills
* B) Hazardous materials training and certification
* C) First aid training
* D) Mechanical training

A

CORRECT ANSWER: B

72
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

73
Q

What should you do if you notice your trailers fishtailing?
* A) Speed up to stabilize them
* B) Apply the trailer brakes gently
* C) Slow down and avoid sharp steering movements
* D) Use the trailer hand valve

A

CORRECT ANSWER: C

74
Q

What is the purpose of the crossing control arm on a school bus?
* A) To prevent students from walking in front of the bus
* B) To assist in loading luggage
* C) To signal other drivers
* D) To help the driver see better

A

CORRECT ANSWER: A

75
Q

How should you handle a situation where a student drops something outside the bus and tries to retrieve it?
* A) Allow the student to get it quickly
* B) Stop the student and retrieve the item yourself if safe to do so
* C) Ignore the situation
* D) Ask another student to retrieve it

A

CORRECT ANSWER: B

76
Q

When is it appropriate to use the bus’s horn?
* A) To greet other drivers
* B) To signal for passengers to board
* C) To warn other drivers of danger
* D) To scare off animals

A

CORRECT ANSWER: C

77
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

78
Q

What should you check on the vehicle’s windshield and windows?
* A) Their color
* B) Their cleanliness, any cracks, chips, or damage
* C) Their size
* D) Their brand

A

CORRECT ANSWER: B

79
Q

How should you check the vehicle’s transmission fluid level?
* A) By checking the fluid’s color
* B) By using the dipstick to ensure the fluid is within the safe range
* C) By smelling the fluid
* D) By checking the fluid’s brand

A

CORRECT ANSWER: B

80
Q

Which of the following is true about backing a commercial vehicle?
* A) Backing should be done as fast as possible
* B) Use the shortest possible path when backing
* C) Avoid using mirrors while backing
* D) It is safest to back up in traffic

A

CORRECT ANSWER: B

81
Q

What does the dual air brake system consist of?
* A) Two separate air systems with a single set of controls
* B) Two separate air systems with two sets of controls
* C) A single air system with a backup reservoir
* D) A single air system with two compressors

A

CORRECT ANSWER: A

82
Q

What is the primary cause of a trailer jackknife?
* A) Overloaded trailer
* B) Sudden acceleration
* C) Locked trailer brakes
* D) Excessive tire pressure

A

CORRECT ANSWER: C

83
Q

How can you ensure the safe operation of a tanker vehicle when making a lane change?
* A) Change lanes quickly to avoid other traffic
* B) Signal early and change lanes slowly and smoothly
* C) Speed up before changing lanes
* D) Make the lane change without signaling

A

CORRECT ANSWER: B

84
Q

What is the primary concern when transporting hazardous materials in a tanker?
* A) Fuel efficiency
* B) Preventing theft
* C) Safety and preventing leaks
* D) Speed of delivery

A

CORRECT ANSWER: C

85
Q

What is the purpose of using dikes and barriers during a hazardous materials spill?
* A) To increase the speed of the cleanup process
* B) To contain and control the spill, preventing it from spreading
* C) To mark the location of the spill
* D) To direct traffic around the spill

A

CORRECT ANSWER: B

86
Q

What is the significance of the “reportable quantity” (RQ) on a shipping paper?
* A) It indicates the total quantity of all cargo
* B) It triggers the need for a spill report if the material is released
* C) It shows the weight of the vehicle
* D) It marks the distance traveled

A

CORRECT ANSWER: B

87
Q

When 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

88
Q

How should you position the trailer when coupling to a second trailer?
* A) At a slight angle
* B) Directly in line with the first trailer
* C) At a right angle
* D) Perpendicular to the first trailer

A

CORRECT ANSWER: B

89
Q

How should you approach a student loading zone?
* A) At high speed
* B) With caution, checking for students and other hazards
* C) With the stop arm retracted
* D) With the doors open

A

CORRECT ANSWER: B

90
Q

When should you use the interior lights on the school bus?
* A) Only when loading or unloading in the dark
* B) At all times
* C) Only when driving in residential areas
D) Only during emergency situations

A

CORRECT ANSWER: A

91
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

92
Q

How should you approach a railroad crossing when driving a passenger bus?
* A) Speed up to cross quickly
* B) Slow down, stop, look, and listen before crossing
* C) Cross without stopping if no train is visible
* D) Honk the horn and proceed

A

CORRECT ANSWER: B

93
Q

When inspecting the vehicle’s wipers and washers, what should you look for?
* A) The color of the wipers
* B) Their ability to clean the windshield effectively and the washer fluid level
* C) The length of the wipers
* D) The brand of the washer fluid

A

CORRECT ANSWER: B

94
Q

What should you inspect on the vehicle’s drive belts?
* A) The color of the belts
* B) Fraying, cracking, and proper tension
* C) The length of the belts
* D) The brand of the belts

A

CORRECT ANSWER: B

95
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

96
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

97
Q

What is the purpose of the governor in an air brake system?
* A) To regulate the maximum air pressure in the system
* B) To increase air pressure in the system
* C) To release moisture from the air tanks
* D) To adjust the brake slack

A

CORRECT ANSWER: A

98
Q

How should you inspect the electrical connections between the tractor and trailer?
* A) Ensure they are clean and securely connected
* B) Ensure they are loose and flexible
* C) Ensure they are hanging freely
* D) Ensure they are disconnected

A

CORRECT ANSWER: A

99
Q

What is the best way to reduce surge when stopping a tanker vehicle?
* A) Apply the brakes firmly
* B) Pump the brakes
* C) Use controlled or stab braking
* D) Stop as quickly as possible

A

CORRECT ANSWER: C

100
Q

What should you do if you notice a surge of liquid when stopping a tanker?
* A) Brake harder to stop quickly
* B) Release the brakes and pump them gently
* C) Accelerate slightly to counter the surge
* D) Use the parking brake

A

CORRECT ANSWER: B

CDL Study Guide (5 decks)

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