Passive safety systems are designed to activate during an accident to reduce injury risk. They include air bags that inflate rapidly during collisions from sodium azide or argon gas to protect the head, neck and chest. Seat belts stop occupants from being thrown and reduce crash forces on the body. Child safety seats and pedestrian safety systems also automatically help protect children and pedestrians.

1. Safety Concepts
Passive Safety Systems
 Passive safety become active during
an accident,
 Reduce the risk of injury during the
time of impact

2. Passive Safety
Air Bag (AB)
 Consist of flexible fabric
bag
 Or cushion to inflate
rapidly during a
collision
 Modern vehicles have
multiple airbag modules
in different side.
 protect your head, neck
and chest areas. Within a
few milliseconds of the
collision

3. Passive Safety
Air Bag (AB)
 In certain cars the airbags will
deploy when the speed exceeds 200-
300 mph
 Sodium azide produces lots of
nitrogen gas
 side airbags however use an argon
gas system

4. Passive Safety
Seat Belt (SB)
 Two main ways in which a seatbelt
protect a person
 Stop the driver from being thrown
from the seat.
 Reduce the force exerted on the
body of person in a crash
 Generally used three-point seat belt
 Three-point belts help the chest,
pelvis, and shoulder

5. Passive Safety
Occupant Sensing Systems
 Detect who is sitting in the
passenger seat
 On/off switch for airbags

6. Passive Safety
Child Safety System (CSS)
 Protect children from injury
 Or death during collisions
 These seats are installed based on
end-user requirements.

7. Passive Safety
Pedestrian Safety System (PSS)
 Automatically decreases the
chances of pedestrians being hit
by the vehicle

8. Passive Safety
Head up display
 Projects images on the
windscreen

9. Passive Safety
Collapsible Steering Column
 Driver survivability in the event of a
head on collision
 While air bags provide safety to
drivers, collapsible steering columns
continue to play an important role in
enhancing driver safety.