Influence of Lifeguard Design
In the years following the Lifeguard's introduction, competing body manufacturers began using fewer, larger body panels to reduce body joints. However, none had become as progressive as Wayne's use of the full-length panels when the focus on structural integrity resulted in the upgraded requirements of the U.S. Federal Motor Vehicle Safety Standards for school buses (#220 and #221), which became applicable on April 1, 1977. After that date, most manufacturers (including Wayne) added special structural adhesives to other fasteners at body joints
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