Supplemental Restraint Systems

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Supplemental Restraint Systems

• South Stokes High School
• 1100 South Stokes High Drive
• Walnut Cove NC, 27052

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• Front air bags have saved 13,967 lives between
  1987 and 2003
• NTSHA (National Highway Traffic Safety
  Administration)

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Air bag basics

• Air bags are supplemental restraints and are
  designed to work in combination with safety
  belts.
• Both frontal and side-impact air bags are
  designed to deploy in moderate to severe crashes

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Air bag basics

• A "moderate or severe" crash
• Is a crash equivalent to hitting a solid, fixed
  barrier at 8 to 14 mph or higher.
• This would also be equivalent to striking a
  parked car of similar size at about 16 to 28 mph
  or higher.

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Air bag basics

• An igniter in the inflator starts a chemical
  reaction that produces a gas (nitrogen or argon)
  that fully inflates the air bag in less than
  1/20th of a second.
• Because air bags deploy very rapidly, serious or
  sometimes fatal injuries can occur if the
  occupant is too close to, or is in direct contact
  with, the air bag when it first begins to deploy
• NOTE nitrogen and argon is harmless

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Most system use 3 crash sensors.
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When 2 crash sensor close an electrical current
is sent to the inflator module.
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The air bag system ignites a solid propellant,
which burns extremely rapidly to create a large
volume of nitrogen gas to inflate the bag.
NOTE Air bags works similar to a solid rocket
booster
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Air bag basics

• Nontoxic cornstarch or talcum powder is often
  used to aid air bag deployment. It is the "smoke"
  you may have seen released into a vehicle's
  interior in demonstrations.
• Talcum power and cornstarch can cause some skin
  irritation in some people.

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Law and Air Bags

• Front Air bag are required by federal law on all
  vehicle produced after1998.
• For information on deactivating an air bag check
• http//dms.dot.gov (docket 3111)
• Certain identifiable groups can get authorization
  to deactivate air bags.
• Small children
• Elderly
• Certain medical condition

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Occupants

• Air bags reduce the chance that an occupant's
  upper body or head will strike the vehicle's
  interior during a crash.
• To avoid an air bag-related injury, always ensure
  proper seating position.
• Read your owner's manual for specific information
  about the air bags in yourvehicle.

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Occupants

• All occupants should be properly restrained with
  either a safety belt or the proper child safety
  restraint, whether or not the vehicle has air
  bags.
• Serious or even fatal air bag-related injuries
  can occur if occupants are not properly
  restrained and in a proper seating position.

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Occupants

• Unrestrained or improperly restrained occupants
  will move forward during the hard braking before
  a crash.
• In addition to striking the interior of the
  vehicle, these occupants are very likely to be on
  top of the air bag as it begins to inflate.

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Occupants

• For properly restrained occupants, most air bag
  injuries are minor cuts, bruises or abrasions and
  are far less serious than the head trauma
  injuries that air bags can prevent.
• All occupants, should maintain at least 10 inches
  between your breastbone and the center of the
  steering wheel.

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Children

• Never place an infant in a rear-facing child
  safety seat in the front seat of a vehicle with
  an active front passenger air bag.
• To minimize injury risks, NHTSA recommends that
  children not lean or rest against chest-only or
  head/chest combination side air bags

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Children

• If small children must ride in the front seat the
  front air bags switch should be turned off.
• Move the seat as far back as possible
• Ensure children are properly restrained according
  to age and size

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Air Bag Quiz

• 1. Children 8 to12 years should ride
• A. In the front seat properly restrained
• B. In a child safety seat
• C. In the back seat properly restrained
• D. Without safety belts

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Air Bag Quiz

• 2. How far should occupants set from an air bag?
• A. 18 inches
• B. 24 inches
• C. 10 inches
• D. 6 inches

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Air Bag Quiz

• 3. How fast is a moderate to Sevier crash?
• A. 24-30 mph
• B. Above 30 mph
• C. 18-22 mph
• D. 8- 14 mph

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Air Bag Quiz

• 4. How fast will an air bag deploy?
• A. 1/20 second
• B. 1/30 second
• C. ½ second
• D. 1 second

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Air Bag Quiz

• 5. You can find specific information about the
  air bags in your vehicle.
• A. Glove box
• B. Owner manual
• C. Engine compartment
• D. Specification manual

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Air Bag Quiz

• 6. When should small children be placed in the
  front seat facing backward?
• A. When on a long trip
• B. When driving under 30 MPH
• C. When air bag is activated
• D. Never

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Air Bag Quiz

• 7. Unrestrained or improperly restrained
  occupants will move __________ during a crash.
• A. Backward
• B. Down
• C. Forward
• D. Up

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Air Bag Quiz

• 8. Technician A says the smoke that is seen after
  an airbag deployment is Hazardous. Technician B
  says the smoke seen after an air bag deployment
  is the results of cornstarch and talcum powder.
  Who is correct?
• A. Technician A only
• B. Technician B only
• C. Both A and B
• Neither A nor B