School Bus Free CDL Practice Tests
Page 7

Prepare For The School Bus Portion Of Your CDL Written Exams

School Bus Questions

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ABS is necessary because it helps you:
  • Avoid skidding or spinning
  • ABS plays a crucial role in all of these things
  • Keep good steering control
  • Avoid locking your wheels up
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From The CDL Manual

10.6.2 – How ABS Helps You

When you brake hard on slippery surfaces in a vehicle without ABS, your wheels may lock up. When your steering wheels lock up, you lose steering control. When your other wheels lock up, you may skid or even spin the vehicle.

ABS helps you avoid wheel lock up and maintain control. You may or may not be able to stop faster with ABS, but you should be able to steer around an obstacle while braking and avoid skids caused by over braking.

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In an emergency braking situation in a vehicle with ABS you should not:
  • Pump the brakes
  • Back off the brakes
  • Brake normally
  • Keep steady pressure on the brakes
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From The CDL Manual

10.6.3 – Braking with ABS

When you drive a vehicle with ABS, you should brake as you always have. In other words:

  • Use only the braking force necessary to stop safely and stay in control.
  • Brake the same way, regardless of whether you have ABS on the bus. However, in emergency braking, do not pump the brakes on a bus with ABS.
  • As you slow down, monitor your bus and back off the brakes (if it is safe to do so) to stay in control.
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ABS malfunction lamps will be what color?
  • Blue
  • Red
  • Yellow
  • Green
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From The CDL Manual

Vehicles with ABS have yellow malfunction lamps to tell you if something is not working. The yellow ABS malfunction lamp is on the bus’s instrument panel.

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An ABS light that stays on while driving indicates:
  • The ABS is functioning normally
  • The brakes will not work at all
  • The vehicle has an electrical problem
  • A malfunctioning ABS system
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From The CDL Manual

10.6.4 – Braking if ABS is Not Working

  • Without ABS, you still have normal brake functions. Drive and brake as you always have.
  • Vehicles with ABS have yellow malfunction lamps to tell you if something is not working. The yellow ABS malfunction lamp is on the bus’s instrument panel.
  • As a system check on newer vehicles, the malfunction lamp comes on at start-up for a bulb check and then goes out quickly. On older systems, the lamp could stay on until you are driving over 5 mph.
  • If the lamp stays on after the bulb check or goes on once you are under way, you may have lost ABS control at one or more wheels.
  • Remember, if your ABS malfunctions, you still have regular brakes. Drive normally, but get the system serviced soon.
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ABS will do all of the following except:
  • Allow for closer following distance
  • Increase stopping power
  • Shorten stopping distance
  • ABS will not do any of these things reliably
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From The CDL Manual

10.6.5 – Safety Reminders

  • ABS will not allow you to drive faster, follow more closely or drive less carefully.
  • ABS won’t prevent power or turning skids — ABS should prevent brake-induced skids but not those caused by spinning the drive wheels or going too fast in a turn.
  • ABS won’t necessarily shorten stopping distance. ABS will help maintain vehicle control but not always shorten stopping distance.
  • ABS won’t increase or decrease ultimate stopping power — ABS is an “add-on” to your normal brakes, not a re placement for them.
  • ABS won’t change the way you normally brake. Under normal brake conditions, your vehicle will stop as it always stopped. ABS only comes into play when a wheel would normally have locked up because of over braking.
  • ABS won’t compensate for bad brakes or poor brake maintenance.
  • Remember: The best vehicle safety feature is still a safe driver.
  • Remember: Drive so you never need to use your ABS.
  • Remember: If you need it, ABS could help to prevent a serious crash.
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ABS should be used in all of the following ways except:
  • As little as possible
  • Only as a supplement to regular brakes
  • All of these apply to use of ABS
  • To prevent skids and help maintain control
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From The CDL Manual

10.6.5 – Safety Reminders

  • ABS will not allow you to drive faster, follow more closely or drive less carefully.
  • ABS won’t prevent power or turning skids — ABS should prevent brake-induced skids but not those caused by spinning the drive wheels or going too fast in a turn.
  • ABS won’t necessarily shorten stopping distance. ABS will help maintain vehicle control but not always shorten stopping distance.
  • ABS won’t increase or decrease ultimate stopping power — ABS is an “add-on” to your normal brakes, not a re placement for them.
  • ABS won’t change the way you normally brake. Under normal brake conditions, your vehicle will stop as it always stopped. ABS only comes into play when a wheel would normally have locked up because of over braking.
  • ABS won’t compensate for bad brakes or poor brake maintenance.
  • Remember: The best vehicle safety feature is still a safe driver.
  • Remember: Drive so you never need to use your ABS.
  • Remember: If you need it, ABS could help to prevent a serious crash.
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When driving in high winds, you should do all of the following to lessen the danger except:
  • Ask your dispatcher how to proceed
  • Drive faster to get through it as quickly as possible
  • Keep a strong grip on the steering wheel
  • Pull over, or at least slow down
Click here to look up the answer

From The CDL Manual

10.7.2 – Driving in High Winds

Strong winds affect the handling of the school bus. The side of a school bus acts like a sail on a sailboat. Strong winds can push the school bus sideways. They can even move the school bus off the road or, in extreme conditions, tip it over.

If you are caught in strong winds:

  • Keep a strong grip on the steering wheel. Try to anticipate gusts.
  • You should slow down to lessen the effect of the wind or pull off the roadway and wait.
  • Contact your dispatcher to get more information on how to proceed.
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When is it acceptable to back up a school bus?
  • Whenever it is convenient
  • If it will save time off the trip
  • Any time students are aboard the bus
  • Only when no other safe way to move the bus is available
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From The CDL Manual

10.7.3 – Backing

Backing a school bus is strongly discouraged. You should back your bus only when you have no other safe way to move the vehicle.

You should never back a school bus when students are outside of the bus. Backing is dangerous and increases your risk of a collision. If you have no choice and you must back your bus, follow these procedures:

  • Post a lookout. The purpose of the lookout is to warn you about obstacles, approaching persons and other vehicles. The lookout should not give directions on how to back the bus.
  • Signal for quiet on the bus.
  • Constantly check all mirrors and rear windows.
  • Back slowly and smoothly.
  • If no lookout is available:
    • — Set the parking brake.
    • — Turn off the motor and take the keys with you.
    • — Walk to the rear of the bus to determine whether the way is clear.
  • If you must back up at a student pickup point, be sure to pick up students before backing and watch for late comers at all times.
  • Be sure that all students are in the bus before backing.
  • If you must back up at a student drop-off point, be sure to unload students after backing.
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If you must back a school bus, you should always:
  • Do all of these things when backing up
  • Post a lookout to help warn you of dangers
  • Be sure that all students are inside of the bus
  • Make sure that it is quiet on the bus
Click here to look up the answer

From The CDL Manual

10.7.3 – Backing

Backing a school bus is strongly discouraged. You should back your bus only when you have no other safe way to move the vehicle.

You should never back a school bus when students are outside of the bus. Backing is dangerous and increases your risk of a collision. If you have no choice and you must back your bus, follow these procedures:

  • Post a lookout. The purpose of the lookout is to warn you about obstacles, approaching persons and other vehicles. The lookout should not give directions on how to back the bus.
  • Signal for quiet on the bus.
  • Constantly check all mirrors and rear windows.
  • Back slowly and smoothly.
  • If no lookout is available:
    • — Set the parking brake.
    • — Turn off the motor and take the keys with you.
    • — Walk to the rear of the bus to determine whether the way is clear.
  • If you must back up at a student pickup point, be sure to pick up students before backing and watch for late comers at all times.
  • Be sure that all students are in the bus before backing.
  • If you must back up at a student drop-off point, be sure to unload students after backing.
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If backing up at a student drop-off point, you must:
  • Contact your dispatcher
  • Never, under any circumstances, back up at a student drop-off
  • Unload students before backing
  • Unload students after backing
Click here to look up the answer

From The CDL Manual

10.7.3 – Backing

Backing a school bus is strongly discouraged. You should back your bus only when you have no other safe way to move the vehicle.

You should never back a school bus when students are outside of the bus. Backing is dangerous and increases your risk of a collision. If you have no choice and you must back your bus, follow these procedures:

  • Post a lookout. The purpose of the lookout is to warn you about obstacles, approaching persons and other vehicles. The lookout should not give directions on how to back the bus.
  • Signal for quiet on the bus.
  • Constantly check all mirrors and rear windows.
  • Back slowly and smoothly.
  • If no lookout is available:
    • — Set the parking brake.
    • — Turn off the motor and take the keys with you.
    • — Walk to the rear of the bus to determine whether the way is clear.
  • If you must back up at a student pickup point, be sure to pick up students before backing and watch for late comers at all times.
  • Be sure that all students are in the bus before backing.
  • If you must back up at a student drop-off point, be sure to unload students after backing.
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Drivers wishing to obtain the school bus CDL endorsement must first pass all of these tests except:
  • All of these tests must be passed
  • General knowledge
  • Air brakes (if so equipped)
  • Passenger endorsement
Click here to look up the answer

From The CDL Manual

Drivers wanting a School Bus Endorsement (S) —

To obtain the endorsement to drive a yellow school bus designed to transport 16 or more people for students 12th grade and under for school-related activities drivers must first pass the general (core) knowledge exam and the passenger endorsement tests based on Sections 2 and 4 of this manual. If the bus has air brakes, also must pass the air brake exam based on Section 5.

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