Paul L. Olson, Ph.D., has enjoyed a long career in human factors since receiving his Ph.D. in industrial psychology from Purdue University in 1959. He is a fellow of both the Human Factors and Ergonomics Society and the American Psychological Association. He is also a recipient of the A.R. Lauer Traffic Safety Award from the Human Factors and Ergonomics Society and the Ralph H. Isbrandt Automotive Safety Engineering Award from the Society of Automotive Engineers.
Dr. Robert Dewar received his Ph.D. in psychology in 1965, and from then until 1991 he taughtpsychology at the University of Calgary when he retired and set up his own consulting firm specializing in driver behavior and traffic safety. He has presented several workshops on human factors in traffic safety for traffic engineers, police, driver educators and traffic safety researchers. He has written a chapter on "Road Users" for the fifth edition of the Traffic Engineering Handbook. He has been a member of the Council on Uniform Traffic Control Devices for Canada and the U.S. National Committee on Traffic Control Devices and a member of four committees of the Transportation Research Board. He is the recipient of the 1990 Human Factors Society's A.R. Lauer Award for outstanding contributions to theunderstanding of human factors aspects of highway safety and driver education.