For example, advanced geocoding systems and GIS allow street addresses to be geocoded by small geographic areas or unique coordinate locations; this capability increases data volume, enhances spatial resolution, and improves data use. Consequently, detailed and up-to-date data needed by planners,managers, and decision makers can be available and accessible (Cater, 1974; NRC, 1980;Simutis, 1980; Dueker, 1980; Eveland, 1980).