John D Lloyd

John D Lloyd, PhD, CPE, ACTAR is a motorcycle accident reconstruction expert specializing in injury biomechanics and human factors. With a career spanning over three decades in biomechanics research and advanced motorcycle dynamics, he brings a nuanced understanding of crash causation and helmet efficacy to litigation work. His work centers on investigating motorcycle accident dynamics, assessing helmet performance in crash scenarios, and evaluating whether human factors contributed to incident outcomes.

Mr. Lloyd has been retained in numerous expert witness and consulting engagements across the United States and Great Britain, involving motorcycle accidents, helmet safety, and human factors analysis. His PhD in Ergonomics (Human Factors Engineering) with a specialization in biomechanics, along with Board Certification in Professional Ergonomics and ACTAR Accreditation, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving motorcycle dynamics and helmet performance.