The TWG used the Haddon Matrix to organize the multitude of topics relevant to motorcycle safety. The topics were divided into the four factor areas. In those instances where a topic fell into more than one category, it was included where it was most relevant. The Haddon Matrix allows categorization of the Pre-Crash, Crash, and Post-Crash groupings with Human, Vehicle, Environmental, and Social factors as illustrated in the table below: Terms in bold type, throughout this document, are defined in the glossary.

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