Daniel W. Vomhof, Ph.D.

Dr. Daniel W. Vomhof, Ph.D.

Expert Witness Services, Inc.
8387 University Avenue
La Mesa , CA 91942
Office: 619-464-3477
Fax: 619-464-2206


Dr. Vomhof is a ACTAR certified accident reconstructionist, with experience in auto, bicycle, pedestrian and motorcycle collisions, Human Factors, biomechanics, safety, labeling, product failure, and questioned documents.

His mission is to provide an accurate and comprehensive assessment of the physical evidence, circumstances, and facts to clients, to enable them to make informed decisions about their case.

Dr. Vomhof has been retained in over 3400 matters and testified in over 700 matters from 1974-present. His experience includes over thirty-five years of forensic consulting, and more than a thousand hours of classroom training, both as a student and as an instructor.

Areas of Expertise

  • Accident Investigation
  • Accident Reconstruction
  • Alcohol, Drug & DUI Testing
  • Automotive
  • Bicycle
  • Biomechanics
  • Black Box/Data Recorder
  • Document Examination
  • Driver Behavior
  • Ergonomics
  • Failure Analysis
  • Fatigue
  • Forklifts
  • Handwriting
  • Human Factors
  • Labels & Warnings
  • Ladders & Scaffolds
  • Lighting & Illumination
  • Machine Guarding
  • Motorcycles
  • Occupational Medicine
  • Personal Injury
  • Photogrammetry
  • Premises Liability
  • Products Liability
  • Ramp & Stairs
  • Seat Belts & Air Bags
  • Slip, Trip & Fall
  • Traffic/Highway Safety
  • Visibility
  • Walking & Working Surfaces

Expert Background

Q: Please list your professional accreditations, degrees, licenses, and certificates granted:
A: Ph.D. - Chemistry, M.S. - Analytical Chemistry, M.S. - Occupational Safety & Health, B.A. - Chemistry/Physics, B.S. - Manufacturing Engineering, Accredited Accident Reconstructionsist - ACTAR, Accredited Professional Chemist - AIC
Q: Please list your affiliations or memberships in any professional and/or industry organizations:
A: Soutwestern Association of Technical accident Investigators, Society of Automotive Engineers, National Association of Professional Accident Reconstructionists, National Association of Traffic Accident Reconstructionists and Investigators, Life Fellow of American College of Forensic Examiners, San Diego Huiman Factors Society, International Society for Biomechanics, Fellow -American Institute of Chemists, American Chemical Society, Institute of Industrial Engineers, American Society for Testing and Materials, Americna society for Materials,
Q: Please list any teaching or speaking experience you have had, including subject matter:
A: COLEMAN COLLEGE - Physics, Psychology, Algebra, Artificial Intelligence, Data Center Management, Emerging Technologies, Developing Knowledge Based Systems; NATIONAL UNIVERSITY - Chemistry for Safety Professionals, Physical Hazards & Human Factors, Product Safety & Liability, OSHA & ADA Laws, Research, Machine Design; Multiple presentations on various aspects of Vehicle Accident Reconstruction, Questioned Document & Handwriting issues, and product Liability issues.
ALLIANT UNIVERSITY - California School of Professional Psychology, (Doctoral level course) Human Performance and Human Factors
Q: Have any of your accreditations ever been investigated, suspended or removed? (if yes, explain)
A: No
Q: On how many occasions have you been retained as an expert?
A: over 3400 litigation/potential litigation matters.
Q: For what area(s) of expertise have you been retained as an expert?
A: Broadly - Accident Reconstruction & Vehicle dynamics, Injury Causation, DUI/DWI, Event Reconstruction, Lighting levels and Witness Observations, Product Liability, Questioned Documents, Slip/Trip & fall, Sound Measurements, Toxicology, Workers Compensation issues, Witness Credibilty based on statement v. physical evidence, role of alcohol (or lack thereof) in event causation.
Q: In what percentage of your cases were you retained by the plaintiff?
A: ~50
Q: In what percentage of your cases were you retained by the defendant?
A: ~50
Q: On how many occasions have you had your deposition taken?
A: 200+
Q: When was the last time you had your deposition taken?
A: July, 2009
Q: On how many occasions have you been qualified by a court to give expert testimony?
A: 700+ (California, Nevada, Massachusetts, Arizona)
State and Federal District Courts
Q: On how many occasions have you testified as an expert in court or before an arbitrator?
A: 700+
Q: For how many years have you worked with the legal industry as an expert?
A: 35+
Q: What services do you offer? (E.g.: consulting, testing, reports, site inspections etc.)
A: Consulting, Site inspection, document review, technical translator - Science to legal, etc.
Q: What is your hourly rate to consult with an attorney?
A: $300.00/Hour
Q: What is your hourly rate to review documents?
A: $300.00/hour
Q: What is your hourly rate to provide deposition testimony?
A: $350.00/hour in our office, $400.00/hour outside our office.
Q: What is your hourly rate to provide testimony at trial?
A: $350.00/hour in our office, $400.00/hour outside our office.
Q: Please list any fees other than those stated above (E.g.: travel expenses, copy fees, etc.)
A: Out of pocket costs billed directly, rental car costs, Photographs depending on number and format. Client pays airfare and lodging directly.

Mileage, internal copy fees, etc. are part of the hourly charge.


References upon request.