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The on-going industry effort to improve air bag systems for out-of-position occupants has created the need to reexamine the existing design criteria and development means to be used in the implementation of advanced air bag technologies. Development procedures and test techniques must be augmented to include appropriate testing of the out-of-position occupant. This paper will review the development of a unique dynamic test fixture and test methodology to simulate the pre-deployment movement of an occupant concantenated with a conventional crash pulse on a HYGE sled. This test methodology provides for efficient development of dynamic occupant tracking systems, biomechanic algorithms and restraint system controls.