Patent ID: 8886413

Claim:
A seat apparatus for a vehicle, comprising: main support control means for moving a side support portion of a seat in the vehicle in a first direction and in a second direction depending on an actual lateral acceleration of the vehicle so as to stabilize a posture of an occupant in the seat, the side support portion being moved by a reduction-mechanism-equipped, electrically operated motor provided at the seat of the vehicle; support control means for operating the side support portion based on electronic map data before the vehicle reaches a curve starting point; distance calculating means for calculating a distance between an intersection and the curve starting point based on the electronic map data, the intersection and the curve starting point existing ahead of the vehicle along a driving route; determining means for determining whether or not control of the support control means is executed based on an evaluation of a difference between the calculated distance and electronic map data accuracy with respect to a corresponding distance parameter thereof; means for executing the control of the support control means based on a result of the evaluation of the determining means; and means for preventing the control of the support control means when the result of the determining means exceeds a predetermined value, which value is determined based on a comfort level of the occupant.