Abstract
There are three elements to route decisions: availability of route network data include real-time updates, scalable approaches to solving capacity-constrained routing, and real-time solutions. A fourth-dimension that runs through these three elements is the visualization of the routes that sufficient fidelity to help the first respondents under the adequacy of the model. This paper proposes tools to validate routing modeling and support emergency evacuation decisions through visualization. We propose a simple route visualization VBA code in ArcGIS, and provide both individual and collective path visualizations.