00748191

Monograph

http://onlinepubs.trb.org...bs/nchrp/nchrp_rrd_221.pdf

This digest describes generic, spatially oriented models of department of transportation (DOT) data and activities developed under National Cooperative Highway Research Program (NCHRP) Project 20-27(2), Development of System and Application Architectures for Geographic Information Systems in Transportation (GIS-T). The need for development of enterprise information architectures to facilitate integrated transportation information systems was addressed using information engineering methods. The generic models can serve as templates for transportation agencies embarking upon information strategy planning to reduce high initial costs. DOT decision makers, information managers, and consultants working for transportation agencies should find the generic models useful and the explanation of Utah DOT's experience informative. Analysis of the interactions between data and activities in the generic models revealed a series of generic business systems, each encompassing a closely coupled group of activities and data. Some of the business systems, especially those that support policy development and location referencing, were determined to be foundational in nature. That is, all other business systems depend upon data created, collected, or managed by the foundational systems. All business systems involved with infrastructure management are highly spatial in nature, as are many of those involved with agency management. This suggests that GIS has high priority among the appropriate technologies for information system implementation. The experience of the Utah DOT in using a template-based approach to information strategy planning is described in some detail. Utah realized a savings of around 67% in comparison to the average cost of information strategy planning at other DOTs. The generic data and activity models produced by this research are at a higher level of detail than the template models that were available to UDOT. This means that more effort will need to be devoted to adding detail to these products to meet the specific circumstances of any one agency. However, the potential for significant savings remains.

Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

English

34 p.

1998-3

NCHRP Research Results Digest

Digital/other

Figures (10) ; References; Tables (1)

Geographic information systems; Mathematical models; State departments of transportation

Activity; Data; Enterprise information systems; Integrated transportation systems; Models

Utah

Highways; Planning and Forecasting; Public Transportation; I72: Traffic and Transport Planning

TRIS, TRB, ATRI

Apr 14 1998 12:00AM