New computer graphic tools for transportation planners

Three interactive graphic computer programs are described which aid transportation planners in data analysis and display: (1) FLOWMAP, which enables the interactive design of flow maps at a computer graphics terminal using origin-destination data; (2) FLOGRAF, which graphically displays traffic flows along a network using color computer graphics, and (3) TRANES, a transit system analysis program that displays the number and type of potential transit users within specified access limits of transit facilities. Typical applications in transportation planning are suggested for each of the programs and recommendations are made for future enhancements. Readily available sources of data are suggested which can be tapped to provide input to the programs.