Maps that illustrate drive times to your business district provide a useful method for determining trade areas based on travel time and road networks. These maps use distances along actual streets and highways, combined with their respective travel speeds, to calculate travel time. Drive time polygons (a GIS term for an area) are important as consumers make decisions based on streets and highways when deciding where they will shop.
The following map illustrates a drive time analysis used to calculate 5-, 10-, and 15 -minute travel times around each store in the Washington DC area. The map also displays the geographic distribution of super-regional shopping destinations surrounding Washington DC.