Michael A. Regan, PhD, is an Emeritus Professor of Human Factors with the University of New South Wales Sydney (UNSW Sydney) Research Centre for Integrated Transport Innovation (rCITI) in Sydney, Australia. Prior to that he was Professor of Human Factors with rCITI, and before that Chief Scientist - Human Factors with the Australian Road Research Board (ARRB). Mike, as he is best known, has Bachelor of Science (Hons) and PhD degrees in psychology and human factors from the Australian National University and more than 25 years' experience in transportation human factors and road safety research, teaching, policy development and consulting - in Australia, Europe and the USA. His specialist research interests include driver distraction and inattention, driver interaction with assisted and automated vehicles and human factors in road design and traffic engineering. Mike has authored, co-authored and co-edited more than 200 peer-reviewed publications, including four published books. He is a Fellow of the Australasian College of Road Safety and was the 25th President of the Human Factors and Ergonomics Society of Australia.

Rob (Robert) Morgan, BEng, MEngSc, is a traffic engineer and road safety engineer, based in Melbourne, Australia. He has over 50 years' experience in these professional areas, and in transport planning. Rob has been the principal author of several national guidelines in road safety engineering and crash investigation. Since 1984, Rob has been an active member of the national committee responsible for Australia's Manual of Uniform Traffic Control Devices (MUTCD), including being the original principal designer of Australia's standard parking control signs, which are noted for their high levels of readability and comprehension. Early in his career Rob worked in the UK, followed by a decade in local government. Since 1993 he has been a consultant, including work in New Zealand and Canada. He has had extensive experience across Australia, leading frequent training workshops on road safety engineering topics. Rob is also a member of the UK Royal Photographic Society.

John L. Campbell, PhD, is a Principal Scientist with Exponent, in the US, with over 35 years of experience examining issues related to human factors, driver behaviour, roadway safety, and the contributing factors to roadway crashes. He is trained as a psychologist, with a PhD in Cognitive Psychology from the Claremont Graduate School and a Master's Degree in Human Factors. He has developed design guidelines and other tools to support roadway design, crash diagnostics, and countermeasure selection. He has provided training to US State Departments of Transport (DOTs) on human factors aspects of roadway design and operations. He also served as the chair of the Transportation Research Board's (TRB's) Standing Committee on Human Factors of Infrastructure Design and Operations from 2016 to 2023. John led the development of the 4th Edition of the Human Factors Guidelines for Road Systems - NCHRP Report 600 and was a contributor to the 8th Edition of the "Green Book" (US Policy on Geometric Design of Highways and Streets) and the 2nd Edition of the US Highway Safety Manual.