Pierce Enforcer, Operator'S Manual

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Seats, Seat Belts, and Safety Restraints / 4-9
GENERAL
Inflatable Head Curtains (IHC) / Supplemental Restraint Airbags (SRA) are mounted on the seat backs of the
outboard rear seats or integral to the outboard seat bolster on PS6™ seats. In the event of a side roll accident, the
IHC/SRA inflates the curtain air bag to protect the head and neck from contact with the cab structure. The IHC/SRA
is designed to work in conjunction with your seat belts.
ALWAYS WEAR YOUR SEAT BELT.
4-3.3d What to Expect During the Deployment of the Side Roll Protection System
During a side roll accident, the roll sensor will send a signal to deploy the advanced occupant protection devices to
restrain and protect the occupants. Below is a list of what to expect at each seating position during deployment.
Driver Position
The driver position is equipped with a Suspension Seat Safety System (S4S) or Supplemental Restraint Airbags
(SRA). The S4S device will quickly activate and pull the seat belt tightly around the occupant. The side air bag will
deploy and position itself next to the driver’s head. Simultaneously, the seat will be pulled toward the floor and tightly
held down until after the vehicle has rolled and stopped. All this will occur in a fraction of a second.
First Officer Position
The first officer position is equipped with Integrated Gas Pretensioner (IGP) / Integrated Belt Pretensioner (IBP) or
Supplemental Restraint Airbags (SRA). The IGP will activate and pull the belt snugly around the occupant. The side
air bag will deploy and position itself next to the occupant’s head. All this will occur in a fraction of a second. The
buckle pretensioner will expel some
blue smoke during deployment. The smoke will have an acrid smell, but will
not be harmful.
Rear Occupants
The rear occupant positions are equipped with Integrated Gas Pretensioners (IGP) / Integrated Belt Pretensioners
(IBP) and optional Inflatable Head Cushions (IHC) or Supplemental Restraint Airbags (SRA) located outboard of the
outside seating positions. The IGP/IBP will activate and pull the belt snugly around the occupant. All this will occur
in a fraction of a second. The buckle pretensioner will expel some
blue smoke during deployment. The smoke will
have an acrid smell, but will not be harmful. The IHC/SRA will inflate to protect the head and neck from contact with
the cab structure.
Do not sit or lean unnecessarily close to the air curtain. Do not place or mount any object over the air
curtain or between the air curtain and the occupants.