Authors: Xiaorong Lai, Minseok Kim, Gang-Len Chang, and Saed Rahwanji
Conference: The PTV America Users Group Meeting 2007
Rising as a new alternative to relieve arterial congestion, the UAID concept generally attempts to enhance operational efficiency at major arterial intersections by reducing the negative impacts of turning movements through various innovative intersection designs. General principles of operation and management strategies of the UAID include: 1) an emphasis on throughtraffic movements along the arterial, 2) a reduction in the number of signal phases (e.g., left-turn arrow phases), and 3) a reduction in the number of intersection conflict points. As a collaborative research effort among the University of Maryland at College Park, Maryland State Highway Administration, and Parsons Brinckerhoff Inc., the knowledge base web interface (http://attap.umd.edu/uaid.php ) has been built to help traffic engineers, community planners, and elected officials to consider the UAID as a feasible solution for relieving arterial congestion and to select proper unconventional design schemes given
actual traffic patterns.