An activating apparatus for vehicle passenger protection devices includes a
rollover determining section for determining the likelihood of a vehicle
rollover. When only the presence of a passenger on the driver' seat is
detected by an occupant sensor, a determination control change-over
section changes conditions for rollover likelihood determination that are
used for the determination of activation of a passenger protection device
on a navigator's seat side to conditions that make it difficult to render
a decision that a vehicle rollover is imminent. With this arrangement, the
navigator's seat side passenger protection device is activated with a time
delay after activation of a passenger protection device on the driver's
seat side.
