John K. Lenneman, Ph.D.

Senior Principal Engineer

Dr. John Lenneman is a Senior Principal Engineer for the Collaborative Safety Research Center (CSRC) at the Toyota Motor North America Research & Development (TMNA R&D) based in Ann Arbor, Michigan. In his current position, Dr. Lenneman is responsible for the execution of R&D projects in the area of Human-Technology Integration (HTI). 

Since joining CSRC in August 2016, Dr. Lenneman has been responsible for developing an HTI research strategy, overseeing project execution, publishing and presenting findings, and integrating findings into product development. 

Dr. Lenneman has served in various capacities in his professional community including as chair of multiple Human Factors and Ergonomics Society technical groups, as a reviewer for multiple journals and conferences, and on numerous ISO and SAE committees. Dr. Lenneman has authored or co-authored more than 50 articles, papers, and abstracts on various topics including human factors, psychophysiology, and health and wellness. 

Additionally, he is listed as an inventor on over 10 automotive related technology patents. 

Before joining Toyota, Dr. Lenneman conducted user experience research in commercial and consumer goods, conducted user research for a health and wellness start-up company, consulted for multiple technology development companies, and spent over ten years conducting automotive human factors research. 

Dr. Lenneman earned a PhD in Applied Experimental Psychology from Central Michigan University and a Master of Science in Industrial Engineering from the University of Michigan. 

Scott Miller

Executive Engineer

Scott Miller is Group Manager for the Collaborative Safety Research Center (CSRC) and Executive Engineer for Vehicle Performance Development (VPD3) at Toyota Motor North American Research & Development (TMNA R&D) based in Ann Arbor, Michigan.

Mr. Miller joined Toyota in 1998 as a manager of Seat and Interior Functional Development. In 2001, Mr. Miller was the Manager of Body Mechanical and Wiper Development in 2004.       Mr. Miller became the Manager of Safety and Crashworthiness. Scott was promoted to General Manager of VPD3 in 2006 and was appointed Executive Engineer Vehicle Safety and Crashworthiness in 2015.

Prior to joining TMNA R&D, Mr. Miller worked as an engineer at Chrysler Corporation in the Noise, Vibration and Harshness (NVH) and at Ford Motor Company in the NVH and as a Supervisor in the Plastics Division Air Intake & Carbon Canister Design.

Mr. Miller earned a Master of Business Administration degree from The University of Michigan and a Master of Science degree in Mechanical Engineering from The University of Michigan.  He holds a Bachelor of Science in Mechanical Engineering from Michigan State University.

Rini Sherony

Senior Principal Engineer

Rini Sherony is a Senior Principal Engineer for the Collaborative Safety Research Center (CSRC) at the Toyota Motor North America Research & Development (TMNA R&D) based in Ann Arbor, Michigan. Ms. Sherony leads active safety, active and passive safety integration and automated driving research collaborations with research institutes, federal agencies and university partners.

Ms. Sherony’ s research and contributions include the development of standardized test procedures, test targets, sensor requirements, benefit estimation for active safety systems such as pre-collision, pedestrian pre-collision system and road departure warning systems.

Since joining TMNA R&D in 1998, Ms. Sherony has held various positions working in the areas of active safety research, system design, evaluation, planning and data analysis.

Ms. Sherony has authored and coauthored more than 100 papers and publications. Rini has been awarded 15 U.S. patents and is actively involved in SAE Active Safety committees developing pedestrian and bicyclist test target standards. She is the recent recipient of SAE’s 2019 Forest R. McFarland Award. She also serves on the advisory boards for the Center for Automotive Research (CAR), UMTRI CCAT and M-City research programs.

Ms. Sherony has a master’s degree in Electrical Engineering. Rini is also a member of the Institute of Electronics and Electrical Engineers (IEEE) and the Association for the Advancement of Automotive Medicine (AAAM).

Pujitha Gunaratne, Ph.D

Principal Scientist

Dr. Pujitha Gunaratne is a Principal Scientist for the Collaborative Safety Research Center (CSRC) at the Toyota Motor North America Research & Development (TMNA R&D) based in Ann Arbor, Michigan. In this position, Dr. Gunaratne is leading driver state analysis research for advanced safety applications.

Since joining TMNA R&D in 2008, Dr. Gunaratne has been involved with driver drowsiness detection using facial images and physiology data, driver attention modeling using simulated and real-world driving, and driver behavior estimation using in-vehicle and surround sensing.

Additionally, Dr. Gunaratne is also working on driver health and wellness state detection technologies using physiology and driving data.

Dr. Gunaratne has expertise in computer vision and machine learning methodologies and served as an expert in naturalistic driving data analysis for Transportation Research Board of National Academies.   

Prior to joining TMNA R&D, Dr. Gunaratne was a Research Engineer at Toyota Motor Corporation, Japan for four years, developing driver emotion detection and drowsiness level estimation technologies.

Dr. Gunaratne holds more than 10 patents in Advanced Driver Assistance Systems and Intelligent Vehicles from the US and Japan.

Dr. Gunaratne is a senior member of The Institute of Electrical and Electronics Engineers (IEEE) and Chairing the Technical Committee of Naturalistic Driving Data Analytics in the IEEE Intelligent Transportation Systems Society. He is also a member of the Society of Automotive Engineers (SAE).

Dr. Gunaratne earned Master’s and Doctoral Degrees in Electrical and Computer Engineering from Nagoya Institute of Technology, Japan.

Jason Hallman, Ph.D.

Principal Engineer

Dr. Jason Hallman is a Principal Engineer in Vehicle Performance Development (VPD) at Toyota Motor North America Research & Development (TMNA R&D) based in Ann Arbor, Michigan. In this position, Dr. Hallman is responsible for the advanced development of future crashworthiness performance.  Additionally, Dr. Hallman serves as an injury biomechanics subject matter expert, leader of passive safety research collaboration with Toyota’s Collaborative Safety Research Center (CSRC) and co-leader for safety integration research at CSRC. 

Dr. Hallman currently serves in various capacities on industry collaborations related to safety and automated vehicles. These include serving as an Associate Editor for the SAE International Journal for Transportation Safety, serves on the SAE Automated Driving Systems Crashworthiness Task Force, on the Scientific Program Committee of the Association for the Advancement of Automotive Medicine, and as an ad hoc reviewer for many scientific journals.

Dr. Hallman has authored or co-authored more than 50 articles, papers, and abstracts on injury biomechanics and vehicle safety.

For his work, Dr. Hallman has been recognized by multiple organizations.  He has been featured in DesignNews Magazine as “One of 15 Engineers Transforming the Auto Industry,” has received Best Paper Awards from the Stapp Car Crash Conference and the Association for the Advancement of Automotive Medicine and has been granted multiple patents.  He was awarded the Outstanding Young Alumni Award by Valparaiso University and a graduate research fellowship by the National Science Foundation. 

Before joining TMNA, Dr. Hallman completed a post-doctoral fellowship in injury biomechanics at the Medical College of Wisconsin (MCW) Department of Neurosurgery, earned a PhD in biomedical engineering at Marquette University, and a Bachelor of Science in mechanical engineering degree from Valparaiso University.

Tina Brunetti Sayer, Ph.D.

Principal Engineer

Dr. Sayer is a senior principal engineer for the Collaborative Safety Research Center (CSRC) at the Toyota Motor North America Research & Development (TMNA R&D) based in Ann Arbor, Michigan. In this role, Dr. Sayer is leading the investigation of evidence-based countermeasures to reduce risky driving.

Since joining CSRC in 2005, Dr. Sayer has led the voice of the customer studies, countermeasures for teen drivers, evaluation of rear field of view and blind spot detection systems, and Society of Automotive Engineers (SAE) Controls and Displays Committee work.

Prior to joining CSRC, Dr. Sayer worked in the area of human factors engineering for Visteon and Veridian.

Dr. Sayer has a PhD in Human Factors Engineering from Virginia Tech., a Master degree in Human Factors Engineering & Safety Engineering from Virginia Tech., and a Bachelor of Science in Psychology from Boise State University.

Dr. Sayer is a member of Human Factors & Ergonomics Society and the Society of Automotive Engineers.

Josh Domeyer

Engineer

Josh Domeyer is an Engineer for the Collaborative Safety Research Center (CSRC) at the Toyota Motor North America Research & Development (TMNA R&D) based in Ann Arbor, Michigan. Mr. Domeyer is a member of the Human-Technology Integration team. He leads the CSRC research theme on vehicle automation-other road user communication which investigates how to design social vehicle automation that interacts with pedestrians, cyclists, and non-automated vehicles. 

Mr. Domeyer joined Toyota in 2011, his current research focuses on how to encourage safe, comfortable, and efficient interactions between people and vehicles whether they are drivers, riders, or other road users. Mr. Domeyer has conducted research on human-machine interface design, driver distraction, and the interaction between people and vehicle automation.

Mr. Domeyer is also the vice chair of the SAE Safety and Human Factors Committee and is an active expert in the ISO Man-Machine Interface Working Group.

Mr. Domeyer has two master’s degrees in Experimental Psychology and Industrial and Systems Engineering.  He is currently pursuing a PhD at the University of Wisconsin-Madison.