a vehicle seat has seating components , such as a seat piece , a backrest and a leg - rest , which are adjustable as to their positions , particularly in their relative inclination , by at least one operating device . a monitoring device monitors all the boundary geometries of the moving seat components which may cause collisions and which have given spatial constraints . the monitoring device controls the operating devices at all points to guarantee a collision - free movement of all seat components within the spatial constraints . the vehicle seat considered as a total system can undergo adjustment processes without a damaging collision occurring .