Patent ID: 7195089

Claim:
A seat belt apparatus for a vehicle comprising: a first belt retractor which can retract a seat belt of the vehicle, and which permits the retracted seat belt to be pulled out; a second belt retractor which can retract the seat belt of the vehicle, and which prohibits the retracted seat belt from being pulled out; a movement state quantity detector which detects a movement state quantity of the vehicle that indicates a possibility of rollover of the vehicle; a first belt retracting controller which determines that the vehicle will roll over and controls the first belt retractor such that the first retractor retracts the seat belt when the movement state quantity detected by the movement state quantity detector satisfies a predetermined first determination condition, wherein such first belt retracting controller operation may be avoided or stopped based on a prior data indicating a low possibility that the vehicle will roll over during a previous first belt retractor operation; and a second belt retracting controller which determines that the vehicle will roll over and controls the second belt retractor such that the second belt retractor retracts the seat belt when the movement state quantity detected by the movement state quantity detector satisfies a predetermined second determination condition that indicates a higher possibility of rollover of the vehicle than the predetermined first determination condition.