Human Factors Expert — Driver Behavior, Drowsy/Distracted/Impaired Driving, Perception-Reaction Time

Dr. Grugle specializes in transportation-related litigation involving drowsy driving, distracted driving, impaired driving, looming, nighttime visibility, perception-reaction time, work zone safety, sleep deprivation, fatigue, shift work, and ADAS/autonomous vehicle human factors. She has worked with both plaintiff and defense counsel.

Yes. Dr. Grugle has provided forensic investigations and testimony for both plaintiff and defense attorneys, and has presented at conferences for organizations including the American Association of Justice, Defense Research Institute, and Trucking Industry Defense Association.

Dr. Grugle holds a Ph.D. in Industrial and Systems Engineering (Human Factors) from Virginia Tech and is a Certified Human Factors Professional (CHFP) credentialed by the Board of Certification in Professional Ergonomics. She has over 25 years of professional experience in human factors.

Yes. Dr. Grugle has authored peer-reviewed publications on sleep deprivation, fatigue, distracted driving, and human performance in journals including Sleep, Applied Ergonomics, Aviation Space and Environmental Medicine, and the Journal of Sleep Research.

Dr. Grugle is based in Colorado and accepts cases nationwide. She has presented and testified across the United States on behalf of attorneys in a wide range of jurisdictions.

Dr. Grugle applies established human factors science and empirical research to evaluate what a driver could reasonably perceive and how quickly they could be expected to react under the specific conditions of a given incident. Her analyses are grounded in peer-reviewed literature and forensic investigation of the crash circumstances.