Human Centered Systems Research
Transportation Operations and Traffic Control Devices Research Program
The Transportation Operations and Traffic Control Devices Research Program consists of research dealing with issues related to intersection operations, traffic control devices, and accessibility issues. Research is conducted in a laboratory setting and in the field to answer research questions from practitioners. Typical projects include research efforts on various human-centered highway operations topics such as pavement markings for speed reduction, colors for transponder-controlled tollbooth lanes, navigation signing for roundabouts, and pedestrian countdown versus flashing "don't walk" signs. The team of research psychologists, engineers, and research assistants also conducts outreach efforts between Federal Highway Administration (FHWA), State, and local organizations.
Currently, the team provides technical oversight of the Traffic Control Devices Pooled Fund Study, collaboration between 17 State DOTs, 2 local DOTs, the American Traffic Safety Services Association, and FHWA. Efforts are underway to determine appropriate symbology for several signs that are anticipated for inclusion in the Manual of Uniform Traffic Control Devices. The study involves the conduct of focus groups to determine symbol sign alternatives as well as field and laboratory testing of various alternatives as developed through a combination of focus groups and an expert panel of engineers and human factors researchers. Researchers have also investigated accessibility issues related to the MUTCD as well as provided suggestions for improving accessibility at roundabouts. There are other efforts dealing with improved pedestrian signal visibility, fishhook-style roundabout markings, and alternative freeway guide signing that are also in progress or planned for the future.
Recent research topics involved field-testing of pavement markings to reduce vehicle speeds as well as laboratory testing of improved roundabout signing in the Highway Sign Design and Research Facility.
Contact: Joe Moyer, 202-493-3370
