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Validation of a Traffic Modeling System for Detour Planning

by Glen Fromm, Parsons Brinckerhoff Quade &, Douglas, Inc, United States,
Chris Wellander, Parsons Brinckerhoff Quade &, Douglas, Inc, United States,
Cathy Strombom, Parsons Brinckerhoff Quade &, Douglas, Inc, United States,



Document Type: Proceeding Paper

Part of: Microcomputer Applications in Transportation III

Abstract:

The Downtown Seattle Transit Project (DSTP) was initiated as an effort to relieve existing traffic congestion in downtown Seattle. It consists primarily of a 1.3-mile electric-bus tunnel and associated surface-street improvements. An inevitable consequence of a central business district (CBD) construction project as large as the DSTP is the adverse impact on CBD traffic. An important task during the early stages of the DSTP was to assess these expected impacts and to develop traffic maintenance plans that would facilitate tunnel construction and minimize traffic impacts. To aid in this effort, project planners developed a complex micro modeling procedure. As the DSTP construction has progressed since the original traffic mitigation plans were developed, an opportunity exists to evaluate projected traffic patterns versus those experienced during actual construction.

Subject Headings: Traffic models | Computer models | Project management | Business districts | Commercial construction | Traffic management | Traffic congestion | Seattle | Washington | United States

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