Jonathan Duvall is a Research Biomedical Engineer with the Department of Veterans Affairs and an Adjunct Assistant Professor at the University of Pittsburgh in the Human Engineering Research Laboratories. Dr. Duvall’s research involves designing and evaluating assistive technology and conducting scientific research which increases the independence and quality of life for people with disabilities. He also co-founded PathVu which evaluates and maps sidewalks and other pedestrian pathways for accessibility. He serves as the project leader on D3 and a team member on R4 and R5.