本文延續美國田納西州曼菲斯市地震中心的地震災害研究，抽樣選出曼菲斯市和雪爾比郡中部分的學校和醫院，應用地理資訊系統的路徑分析功能，找出各學校和醫院間之距離和路徑，再從其中選取出最短之路徑者爲地震災害發生時救護車輛之通行路線。除一般地理資訊系統的製圖過程外，本文主要以路徑尋覓功能來完成，顯示出在多項地震發生狀況假設中，此項電腦路徑分析作業足以迅速地選取路徑和計算距離，當可做更大範圍之應用。

This paper focuses on the application of network analysis, one of the major functions of geographic information systems, to solve a number of optimization problems, namely selecting the shortest route between origins and destinations, and designing optimum routes for delivery vehicles and buses. The pathfinding function was used to find the optimum path between schools and hospitals in Memphis and Shelby County if an earthquake occurs. The computerized network analysis revealed that the appropriate paths were selected and calculated under the earthquake scenarios. This strategy may also be applied in a large scale implementation.