1. A system for actuating a vehicle safety restraint comprising: means for detecting a distance between a vehicle occupant and a fixed structure within the vehicle; means for receiving information representative of instantaneous vehicle acceleration; processor means responsive to said detected distance and said received vehicle acceleration information for determining a first actual time to fire, wherein said processor means generates occupant condition data based on said detected distance, said occupant condition data being representative of at least one of the group consisting of transitory occupant position, transitory occupant velocity and transitory occupant acceleration; and wherein said processor means selects in real time one of a plurality of crash discrimination strategies for use in a crash discrimination analysis based on said generated occupant condition data, each of said strategies using said received vehicle acceleration information to provide a range of actual times to fire, said range of actual times to fire provided by one of the strategies being different from the range of actual times to fire provided by another of the strategies; and wherein said processor means determines said first actual time to fire in accordance with the selected strategy; and means responsive to said processor means for actuating the safety restraint at said first actual time to fire.