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Model for the Routing of Hazardous Material Transports Through the Central Business District of Dallas

(Rene Anderson, Joseph Davila, Michael Rowland, 1992)

The objective of this study was to define a method of calculating freeway and arterial route segment risk levels, and to create a logical model that will allow for the assessment of the safest route for a transport to take between any two points (or nodes) within the Central Business District of Dallas. The significant raw data available for the segments included in the study was converted into an additive, aggregate risk level using a series of mathematical operations. The resulting risk levels served as inputs for a least-cost (least-risk) network model. A FORTRAN code of Floyd's algorithm accepted the risk level inputs and provided the optimal paths between each of the nodes in the network, along with a cumulative risk level for each path. Both the factor level calculation process and the network model are flexible enough to be applied for similar analysis in other cities.

Richard S. Barr
Fri Feb 17 16:09:51 CST 2006