Board Certified Expert Biomechanics, Ergonomics, Human Factors, Auto & Motorcycle Accidents, Helmets
Expert WitnessForensic ExpertSpeaker
Dr. Lloyd’s unique capability is in the biomechanical evaluation of head and brain injuries. He is often called upon to opine whether head and brain injuries may or may not have been prevented by head protection.
Dr. Lloyd’s passion is motorcycling, which, along with automobile accidents, is a leading cause of traumatic brain injuries in the United States. Dr. Lloyd has obtained certification on Motorcycle Crash Investigation as well as Reconstruction and Analysis of Motorcycle Accidents.
Dr. Lloyd provides expert analysis and investigation involving the following types of cases:
Automobile accident reconstruction and investigation
Motorcycle crash investigation
Motorcycle accident reconstruction
Truck / trucking accidents
Concussion / Traumatic Brain Injury
Areas of Expertise
John Lloyd, PhD, CPE has served as an expert witness for 25+ years, providing expert testimony in the fields of biomechanics, ergonomics and human factors.
Specializing in the Biomechanics of Head and Brain Injury, Dr. Lloyd has been court qualified to provide biomechanical analyses of various incidents, including: Motorcycle Accidents, Automobile Accidents, Trucking Accidents, Human Factors, Concussion, Football Helmets, Brain Injury in Sports, Motorcycle Helmets, Slips & Falls
Dr. Lloyd earned a Ph.D. in Ergonomics with specialization in biomechanics from Loughborough University in England in 2002. He has practiced in the field of biomechanics for over twenty-five years as a senior federal researcher and is board certified (CPE # 725) through the Board of Certification in Professional Ergonomics (a national board certification that is recognized in all states)
Dr. Lloyd has provided Deposition and Trial Testimony on more than 80 occasions, pertaining to civil and criminal cases in the States of Arizona, Colorado, Florida, Georgia, North Carolina, Ohio, Oregon, Texas and Great Britain and has been recognized as an expert in every case. The analysis methods that Dr. Lloyd utilizes have been published in peer-reviewed scientific journals and have survived Daubert (Porter) challenge.
To date, Dr. Lloyd’s work has been published in 6 book chapters and 30 peer-reviewed journals, as well as presented at more than 100 national and international conferences (see curriculum vitae).
Dr. Lloyd’s unique capability is in the biomechanical head and brain injury, specifically, football, sports and motorcycle helmets. Helmets are designed to reduce the risk of blunt force trauma to the head, however protection afforded against traumatic brain injury is inadequate by many helmet designs. Dr. Lloyd is often called upon to opine whether the head and brain injuries may or may not have been prevented by head protection.
Dr. Lloyd’s advanced research into helmets has led to several peer-reviewed publications in scientific journals. Specifically, the apparatus and methods that he employs to evaluate helmet protection was published in a landmark technical article titled “Response of an Impact Test Apparatus for Fall Protective Headgear Testing Using a Hybrid-III Head-Neck Assembly“.
Using this apparatus, Dr. Lloyd and co-author / neurologist Dr. Frank Conidi of the Florida Center for Headache and Sports Neurology have presented a series of studies at the American Academy of Neurology meetings. Our work was publicized by the AAN in a press release titled “How Well Do Football Helmets Protect Players from Concussions” Most recently, Dr. Lloyd and Dr. Conidi published a scientific article in the Journal of Neurosurgery titled “Brain Injury in Sports“, in which they document the limited protection against traumatic brain injuries afforded by many current varsity football helmets.
Dr. Lloyd’s passion is motorcycling, which, along with automobile accidents, is a leading cause of traumatic brain injuries in the United States. Dr. Lloyd has obtained certification through the Institute for Police Technology and Management (ITPM) on Motorcycle Crash Investigation, as well as certification in Reconstruction and Analysis of Motorcycle Accidents through the Society for Automotive Engineering (SAE).
Dr. John Lloyd – Brain Injury Expert Motorcycle Expert Biomechanics
Motorcycle Accident Expert Witness
Truck Accident Reconstruction, Injury Biomechanics and Human Factors
CV of John D. Lloyd, PhD, CPE, CBIS - Expert Witness
Helmet Expert Witness
Slips Trips and Falls
John D. Lloyd, PhD, CPE in the Social NetworksGoogle+ Profile Facebook Twitter LinkedIn
Dr. Lloyd has provided Deposition and Trial Testimony on more than 80 occasions, pertaining to civil and criminal cases in the States of Arizona, Colorado, Florida, Georgia, North Carolina, Ohio, Oregon, Texas and Great Britain and has been recognized as an expert in every case. The biomechanical analysis methods that Dr. Lloyd utilizes have been published in peer-reviewed scientific journals and have survived Daubert (Porter) challenge.
PhD - Ergonomics / Biomechanics
CPE - Board Certification
Legal Experience & Services
John D. Lloyd, Ph.D., CPE, is a Board Certified Ergonomist and Brain Injury Specialist. His research focusses on the biomechanics of brain injuries. He has provided expert witness services nationwide for over 25 years in the fields of biomechanics, ergonomics and human factors, specializing in the biomechanics of brain injury, including motor vehicle accident reconstruction, motorcycle accidents, trucking accidents sport and motorcycle helmet cases, slips and falls, and pediatric head trauma.
Research Director, BRAINS, Inc., San Antonio, Florida
Assistant Professor, University of South Florida College of Engineering
• American Biomechanics Society
• American Academy of Neurology
• National Neurotrauma Society (#10662)
• American Academy of Forensic Sciences
• Board of Certification in Professional Ergonomics
• The Ergonomics Society (former)
• The Human Factors and Ergonomics Society (former)
• Sigma Xi Research Society
• ASTM Committee F08 on Sports Equipment, Playing Surfaces and Facilities
• National Association of Traffic Accident Reconstructionists and Investigators
• Society of Accident Reconstructionists
PhD - Ergonomics / Biomechanics
CPE - Board Certification
Awards & Honors
Certificate of Excellence awarded by VHA Patient Safety Research Center (2002)
Author of Top 10 cited paper (2006-2008) in International Journal of Nursing Studies
Seminars & Training
Dr. Lloyd has lectured extensively at national and international conferences. Some of his more recent, selected presentations include:
Helmet technology to minimize head injuries associated with falls. 10th Annual Conference on Transforming Fall Management Prevention Practices. Clearwater, FL; May 2009.
Commercially available mats to prevent bed-related fall injuries. 10th Annual Conference on Transforming Fall Management Prevention Practices. Clearwater, FL; May 2009.
Biomechanics of Traumatic Brain Injury. Florida Public Defender’s ‘Life Over Death’ Annual Meeting. Naples, FL 2010
Technology Gaps Associated with Safe Patient Handling and Movement. 11th Annual Safe Patient Handling and Movement Conference. Orlando. April 2011.
Biomechanics of Pediatric Brain Injury. Department of Children and Families, Wildwood, FL. July 2012
Biomechanics of Pediatric Brain Injury. Evidence Based Medicine and Social Investigation conference, Vancouver, Canada. August 3, 2012
Developing Helmet Standards and Testing Methods to Protect from Brain Injury. Proceedings of the ASTM Symposium on Concussion in Sports. Atlanta, GA. November 20, 2012
Biomechanics of Inflicted Head Trauma. Presented at 4th Penn State Hershey International Conference on Pediatric Abusive Head Trauma, June 27-28, 2013, Burlington, VT.
Researchers Reveal Deficiencies in Football Helmet Design. 11th Annual Conference on Brain Injury. September 18-21, 2013. New Orleans, LA.
Biomechanical Evaluation of Head Kinematics During Infant Shaking Versus Pediatric Activities of Daily Living. 11th Annual Conference on Brain Injury. September 18-21, 2013. New Orleans, LA.
Biomechanics of Brain Injuries Associated with Short Falls in Children. 11th Annual Conference on Brain Injury. September 18-21, 2013. New Orleans, LA.
Using LabVIEW to Design and Evaluate a Better Football Helmet. Tampabay LabVIEW users group meeting, May 21st, 2014. Tampa, FL.
Selected Book Chapters
1. Lloyd JD and Haslam RA, “Traumatogens Associated with Carpal Tunnel Syndrome.” In Harbison, Industrial Toxicology Handbook, 5th edition. Mosby Publishers, St. Louis 1998
2. Lloyd JD, “Biodynamics of back injury: Manual lifting and loads.” In Charney, Back Injury Among Healthcare Workers: Causes, Solutions and Impacts. CRC Press 2003
3. Lloyd JD and Baptiste A, “Patient Handling Technologies.” In: Charney, Handbook of Modern Hospital Safety, second edition. Taylor and Francis 2009
4. Lee WA and Lloyd JD “Biomechanical, Epidemiologic and Forensic Considerations of Pediatric Head Injuries” In Freeman, Forensic Epidemiology: Principles and Practice. Elsevier publishers, Oxford UK. 2016.
Selected Journal Articles
1. Nelson A, Lloyd JD, Gross C and Menzel N. (2003). Preventing Nursing Back Injuries. AAOHN 51(3): 126–134
2. Bowers B, Lloyd J, Lee W, Powell-Cope G and Baptiste A. (2008). Biomechanical evaluation of injury severity associated with patient falls from bed. Rehabilitation Nursing 2008 33(6): 253–9
3. Schulz BW, Lee WE and Lloyd JD. (2009). Estimation, Simulation, and Experimentation of a Fall from Bed. Rehabilitation Research & Development 2009 45(8): 1227 — 1236
4. Lloyd et al. (2011) Biomechanical Evaluation of Infant Shaking compared with Pediatric Activities of Daily Living. Journal of Forensic Biomechanics
5. Lloyd J. (2013). Biomechanics of Brain Injuries Associated with Short Falls in Children. Head Trauma Rehab.
6. Caccese V, Lloyd J, Ferguson J. (2014). An Impact Test Apparatus for Protective Head Wear Testing Using a Hybrid III Head-Neck Assembly. Experimental Techniques.
7. Lloyd J & Conidi F. (2015). Brain Injury in Sports. Neurosurgery. October.
8. Lloyd J. (2016). Biomechanics of Solo Motorcycle Accidents. Forensic Biomechanics
9. Lloyd J. (2016). Biomechanics of Motorcycle Helmet Protection. Neurotrauma. Conference Abstract # PSB-199.
References gladly provided upon request.
PhD - Ergonomics / Biomechanics
CPE - Board Certification, Ergonomist and Brain Injury Specialist.
Articles Published by John D. Lloyd, PhD, CPE
Forensic Biomechanics - The Science of Injury Causation
Human injury is complicated. If we lived our lives inside a protective bubble then, one day experienced an incident, it may be relatively simple to ascribe any injuries to the traumatic event. But that is typically not the case.Read Article