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Early research suggested protected left-turn signalization had clear safety benefits over permissive left-turn signalization. Yet, subsequent research on when and where to use protected left-turn signalization focused more on vehicle delay and throughput than on safety. Based on such studies, it would...

This paper presents the results of a user-centered systems analysis of a proposed software system, The North Dakota Intermodal Management System. The study surveyed and evaluated several object-oriented analysis methods to select the one that best supports user centered development. This examination...