CADD Applications in Transportation: Beyond Highway Designby Wayne A. Sarasua, Georgia Inst of Technology, Atlanta, United States,
Abstract: Computer Aided Design and Drafting (CADD) software have become very prominent in the design of transportation facilities. There are currently a number of third party packages that operate in conjunction with microcomputer CADD packages that aid in the design of roads, bridges, parking lots and various other transportation facilities. However, there are a number of other applications of CADD in transportation that are less prominent. This paper discusses some of these applications including traffic engineering (signal design and signal coordination), transportation planning (creation of transportation forecasting networks), and transportation safety (accident collision diagrams). For each of these areas, an extensive description of the application is given. AutoCAD is the CADD platform for the applications discussed in this paper. Each of the applications includes customized menus and extensive symbol libraries as well as software that provide for automation. The benefits of using CADD for these applications is discussed.
Subject Headings: Computer aided design | Highway and road design | Bridge design | Traffic signals | Traffic accidents
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