In the fall of 1962, the Automotive Glazing Subcommittee of the SAE Body Engineering Committee inaugurated a task force for studying the relation of resistance to penetration upon impact versus glass-to-interlayer adhesion level in the laminated windshield. While the interlayer manufacturers and the laminators were experimenting at attaining varying adhesion levels, the Study Group established desired improved performance standards based on the force involved when a vehicle occupant contracts the windshield during an accident. Extensive impact tests, performed at Wayne State University and at auto manufacturers' crash facilities, provided the basis for these standards. It was the resultant judgment of the committee that it should strive for a penetration resistance at leas double that of the existing standard with no increase in the deceleration forces nor loss in the glass spalling, separation and related qualities