Analysis of Networks - Introducing Geographic Information Systems with ArcGIS - page 596

FIGURE 9-21
35. In the Network Analyst window click the + sign to expand Polygons (40). Click on Station 22
to highlight the name and the boundary of the polygon. In the Selection menu pick Zoom
To Selected Features. Notice the area that is covered by the station in the 1.5-minute time
allotment, as well as the area left uncovered. See Figure 9-21. After examination, close ArcMap.