Static and dynamic test procedures were developed for evaluating the crush characteristics of automotive structural components which perform a major structural function in side impacts. Laboratory tests were conducted on several 1969 to 1971 4-door intermediate size automobiles to evaluate the crush characteristics of some of their structural components. Static crush tests were conducted in the 12-mil 1 ion-lbf capacity universal testing machine at the National Bureau of Standards, employing its large working space. The dynamic tests were conducted using the monorails attached to the sensitive crosshead and the tie-down floor system which is incorporated in the foundation of this machine. The crush loads were applied perpendicular to the vehicle side for each of the tests. The response of the structural components was established based on the evaluation of displacement and/or strain measurements and detailed examination of the permanently deformed components following each test. Empirical factors were obtained which are useful for comparison of static and dynamic crush characteristics of a vehicle side door structure over a limited loading range. Further development of the test procedures is required in order to extend the range over which such results would be meaningful.