Abstract: A knee protection structure for a vehicle may include a bracket disposed on a vehicle body structure, and a lower crash pad panel disposed to be supported by the bracket so that a knee of a passenger hits the lower crash pad panel in the event of a collision, in which the lower crash pad panel may include a uni-directional continuous-fiber composite material, continuous fibers may be arranged in a given direction, inserted into at least a predetermined region of the entire region thereof, and a multi-directional continuous-fiber composite material, in which continuous fibers may be arranged in multiple directions, inserted into the remaining region.

Abstract: A curtain air bag includes a diffuser having an opening that emits operation gas, placed at a predetermined area along an inner side of a roof rail, a first cushion divided into first and second areas that limits a front seat and a rear seat, a third area that forms a front area of the first area, and a fourth area placed between the first area and the second area. The curtain airbag further includes a plurality of cushion holders that fix the first cushion into the roof rail by coupling to the top of the first cushion, a first downwardly extended portion of the first cushion connected to a lower surface of the first area and providing a predetermined area to protect ribs of a passenger sitting in the front seat, a second downwardly extended portion of the first cushion connected to a lower part of the second area and providing a predetermined area to protect ribs of a passenger sitting in the rear seat.