Abstract
Geographic information systems for transportation earned its moniker of GIS-T because of active GIS-T research and applications carried out over the years. There were several GIS-T books and review papers published around the turn of the twenty-first century. As we are now 10 years into the new century, it is an appropriate time to assess the past accomplishments and look into the future of GIS-T. This article first discusses the ‘T’ in GIS-T with a review of the critical transportation issues identified by the US Transportation Research Board. Past GIS-T developments are then presented from three different perspectives of using GIS-T as a spatial database, using GIS-T as an analysis and modeling environment, and using GIS-T as a communication tool. Because of the static map layers view and the conventional GIS data models, past GIS-T developments are weak in handling dynamic movements, changes, and processes in transportation systems. Our world, on the other hand, has become increasingly dynamic because of the widespread use of modern information and communication technologies. GIS-T therefore must transform itself to accommodate this dynamic and changing world. A discussion of the dynamic future of GIS-T is presented in this article.
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