Libby joined the staff of the University of North Carolina (UNC) Highway Safety Research Center (HSRC) in 2001. As a senior research associate for the Center, Libby’s primary focus areas include bicycle and pedestrian safety, and crash causes, including environmental and driver risk factors such as speeding and aggressive driving. Libby has served as the principal investigator or key researcher on a number of national, state and local studies that have examined roadway and behavioral crash factors, and identified appropriate countermeasures. She has also conducted pedestrian and bicyclist safety and access research, and worked with agency representatives and project staff to develop evidence-based case studies, published guides and interactive tools and resources to help states and communities make safety improvements. Results of her research have been presented at national conferences and can be found in a variety of published reports and articles. In addition to her research work at HSRC, Libby is the founder and co-chair since 2011 of the joint sub-committee on Traffic Speed and Safety of the Transportation Research Board, a division of the National Academies of Science. Libby holds a master’s degree in biology from Wake Forest University and a bachelor’s degree in business administration from UNC-Chapel Hill.

Bill has a broad civil engineering background relating to many facets of engineering planning, design and construction. Bill regularly provides expert training on Complete Streets, non-motorized travel, traffic calming, Safe Routes to School, engineering guidelines (such as AASHTO, MUTCD, NACTO). He is a certified National SRTS Course trainer. He is able to effectively communicate engineering concepts to citizens, engineers, planners, and politicians to develop the necessary buy-in to implement multi-modal solutions. Bill is a member of the National Committee on Uniform Traffic Control Devices (NCUTCD). Bill’s has overseen the retrofit of over 250 miles of public roadways to meet livability, complete street, and non-motorized travel objectives throughout the United States. His work also includes the development of the 2012 AASHTO Bicycle Guide, numerous State and local bike and pedestrian design guidelines, and technical manuals.