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SAE J224 (FEB2017)

Historical Revision

Collision Deformation Classification

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The purpose and scope of this SAE Recommended Practice is to provide a basis for classification of the extent of vehicle deformation caused by vehicle accidents on the highway. It is necessary to classify collision contact deformation (as opposed to induced deformation) so that the accident deformation may be segregated into rather narrow limits. Studies of collision deformation can then be performed on one or many data banks with assurance that the data under study are of essentially the same type. 1 The seven-character code is also an expression useful to persons engaged in automobile safety, to describe appropriately a field-damaged vehicle with conciseness in their oral and written communications. Although this classification system was established primarily for use by professional teams investigating accidents in depth, other groups may also find it useful. The classification system consists of seven characters, three numeric, and four alphameric, arranged in a specific order. The characters describe the deformation detail concerning the direction, location, size of the area, and extent which, combined together, form a descriptive composite of the vehicle damage. The individual character positions are referred to by column number for identification and computer storage compatibility as illustrated in Figure 1 . The definition of each classification is provided in subsequent sections. An Appendix is also provided to assist in application and interpretation.

SDO SAE: SAE International
Document Number J224
Publication Date Feb. 23, 2017
Language en - English
Page Count 23
Revision Level 201702
Supercedes
Committee
Publish Date Document Id Type View
May 2, 2022 J224_202205 Revision
Feb. 23, 2017 J224_201702 Revision
May 18, 2011 J224_201105 Revision
March 1, 1980 J224_198003 Revision
Jan. 1, 1971 J224_197101 Revision