This SAE Recommended Practice describes a laboratory test procedure for evaluating the head impact characteristics of such areas of an automotive instrument panel as may be required to meet impact performance established for the protection of lap-belted front seat occupants.
SAE J921-1981 history
1981SAE J921-1981 Motor Vehicle Instrument Panel Laboratory Impact Test Procedure-Head Area
1971SAE J921B-1971 MOTOR VEHICLE INSTRUMENT PANEL LABORATORY IMPACT TEST PROCEDURES - HEAD AREA
1967SAE J921A-1967 INSTRUMENT PANEL LABORATORY IMPACT TEST PROCEDURE—HEAD AREA
1965SAE J921-1965 INSTRUMENT PANEL LABORATORY IMPACT TEST PROCEDURES