Abstract: Safety passenger seat apparatus for a vehicle including a passenger seat having a backrest pivotally attached to a seat rest. Energy absorption devices are provided for dissipating and absorbing collison and/or deceleration forces acting on the seat or a passenger in the seat, which energy absorption devices utilize both pivotal and linear movement of portions of the seat during the energy absorption. In one preferred embodiment, a rotation energy transformer is provided at the pivotal connection between the backrest and the seat rest, while a further rotation energy transformer is provided at the attachment of the seat rest to a fixed foot support structure. This preferred embodiment further includes a linear energy transformer which frictionally dissipates energy during linear movement of the foot and attached seat along guide rails fixed in the floor of the vehicle.