Forensic, General & Medical
Expert Witnesses

Board Certified Expert Biomechanics, Human Factors, Accident Reconstruction, Motorcycle, Slip, Fall

John D. Lloyd, PhD, CPE

John D. Lloyd, PhD, CPE

32824 Michigan Avenue
San Antonio (Tampa), Florida 33576

Phone(813) 624-8986

Website https://drbiomechanics.com/

► Contact John D. Lloyd, PhD, CPE

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John Lloyd, PhD, CPE has served as an expert witness for 25 years, providing testimony in biomechanics, human factors and accident reconstruction involving motorcycle, auto and trucking accidents as well as slips, trips & falls.

Dr. Lloyd has been qualified to provide biomechanical analyses of various incidents, including:
• Motorcycle Accidents
• Automobile Accidents
• Human Factors
• Brain Injury
• Helmets
• Slips Trips & Falls

Dr. Lloyd earned a Ph.D. in Ergonomics (Human Factors Engineering) with a specialization in biomechanics from Loughborough University in England. He has practiced in the field of biomechanics for over 25 years, and has been board certified (CPE # 725) through the Board of Certification in Professional Ergonomics since 1995.

He also holds numerous certifications in motor vehicle and motorcycle accident reconstruction. Applicable professional memberships have included The Ergonomics Society, Human Factors and Ergonomics Society, American Society of Biomechanics, American Academy of Forensic Sciences, American Academy of Neurology, National Neurotrauma Society, Academy of Certified Brain Injury Specialists, National Association of Traffic Accident Reconstructionists and Investigators, and Society of Accident Reconstructionists (SOAR).
John served as a senior federal researcher for the US Department of Veterans Affairs for 20 years. Additionally, he holds a courtesy appointment as Assistant Professor in the University of South Florida College of Engineering.

Dr. Lloyd’s professional work has been published in six book chapters and 31 scientific articles in peer-reviewed journals, as well as presented at more than 100 national and international conferences.

His expertise in human factors, biomechanics and accident reconstruction has been recognized and admitted by civil and criminal courts throughout the United States and Great Britain, in which he has provided testimony on approximately 100 occasions.

Services

Dr. Lloyd provides expert analysis and investigation involving the following types of cases:

Injury Biomechanics
Human Factors - perception response time & distracted driving / cell phone use
Automobile accident reconstruction and investigation
Motorcycle crash investigation
Motorcycle accident reconstruction
Truck / trucking accidents
Concussion / Traumatic Brain Injury
Helmet testing
Sports Helmets
Football Helmets
Motorcycle Helmets
Slips, Trips & Falls

Areas of Expertise

Profile

John Lloyd, PhD, CPE has served as an expert witness for 25+ years, providing expert testimony in the fields of biomechanics, human factors and accident reconstruction.

With a unique background that encompasses 20 years of federally-funded grant research in injury biomechanics, academic training in human factors and certifications in accident reconstruction, Dr. Lloyd's qualification have been widely accepted to address the many facets of automobile, motorcycle and trucking accidents, including crash reconstruction, occupant kinematics and injury severity, as well as perception response and distracted driving issues.

Dr. Lloyd earned a Ph.D. in Human Factors (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 90 occasions in the States of Arizona, Colorado, Connecticut, Florida, Georgia, North Carolina, Ohio, Oregon, Texas and Great Britain and has been recognized as an expert in every case.

To date, Dr. Lloyd’s work has been published in 6 book chapters and 31 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).

Consulting Practice

All states, Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, AK, AL, AR, AZ, CA, CO, CT, DE, FL, GA, HI, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY

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Professional Experience

Dr. Lloyd has served as a Board Certified expert in biomechanics, human factors and accident reconstruction for more than 25 years. During that time he has served on more than 250 cases, retained almost equally by plaintiff and defense counsel, and has testified on in deposition 64 times and in court on 35 occasions.


Licenses

PhD - Ergonomics / Biomechanics
B.Sc.(Hons) - Human Factors (Ergonomics)
CPE - Board Certification
Accident Reconstruction (EDC)
Reconstruction and Analysis of Motorcycle Crashes (SAE International)
Investigation of Motorcycle Crashes (IPTM)
Traffic Crash Analysis using Virtual Crash
Energy Methods and Damage Analysis in Traffic Crash Reconstruction (IPTM)
Advanced Analysis of Driver Responses (IPTM)


Legal Experience & Services

John D. Lloyd, Ph.D., CPE, is a Board Certified Ergonomist and Brain Injury Specialist. He has provided expert witness services nationwide for over 25 years in the fields of biomechanics, human factors and accident reconstruction, specializing in the biomechanics of brain injury, including motor vehicle accident reconstruction, motorcycle accidents, trucking accidents sport and motorcycle helmet cases, slips, trips and falls. He has served on more than 250 cases, retained almost equally by plaintiff and defense counsel, and has testified on in deposition 64 times and in court on 35 occasions.


Affiliations

Research Director, BRAINS, Inc., San Antonio, Florida
Assistant Professor, University of South Florida College of Engineering

Professional memberships:
• Board of Certification in Professional Ergonomics
• American Biomechanics Society
• Human Factors and Ergonomics Society
• American Academy of Forensic Sciences
• American Academy of Neurology
• National Neurotrauma Society (#10662)
• The 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


Qualifications

PhD - Ergonomics / Biomechanics
B.Sc.(Hons) - Human Factors (Ergonomics)
CPE - Board Certification
Accident Reconstruction
Reconstruction & Analysis of Motorcycle Crashes
Investigation of Motorcycle Crashes
Traffic Crash Analysis using Virtual Crash
Energy Methods & Damage Analysis in Traffic Crash Reconstruction
Advanced Analysis of Driver Responses


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.


Publications

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. (2017). Biomechanical Evaluation of Motorcycle Helmets: Protection Against Head and Brain Injuries. Journal of Forensic Biomechanics.


Professional References

References gladly provided upon request.


Education

PhD - Ergonomics / Biomechanics
B.Sc.(Hons) - Human Factors (Ergonomics)
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



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