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How to use AnySite 9.x and DriveTime methodology

UPDATED: April 21, 2017


                               Anysite US and Drive-Time methodology

Freeway = The default/traditional trade area uses concentric rings around a site. Concentric rings do not account for physical geography and/or the street network.

Envinsa (Spectrum OnDemand) = The optional trade area built based on the local road network (such as one-way, on & off ramps and speeds on differing road types) and takes into consideration geographic barriers (such as parks, lakes, etc.) Unlike concentric rings (Freeway), an Envinsa trade area can be irregularly shaped. Site placement is very important in Envinsa.

AnySite = Not for North American use. The equivalent for Freeway in other locales.



METHODOLOGY AND DATA SOURCES

Freeway uses a precompiled grid environment which is a compressed representation of the street network. A detailed grid (approximately 500 feet in size) is used for drive times up to 30 minutes while a generalized grid (approximately ½ mile in size) is used for larger drive times, although it is possible to force Freeway to use a specific grid size for any particular problem. Urban/rural differentiation was accomplished by aggregating census tracts with more than 60% urban population, then buffering the results (2 miles). The goal was not to replicate the Census Bureau’s definitions of urban/rural, but rather to identify those areas where significant urban traffic congestion is likely.

Road linkages are divided into six categories, as follows:

Rural local - local roads in small towns and minor roads outside of small towns

Rural arterial - state and US highways outside of urban areas

Rural freeway - state, US, and Interstate multi-lane divided highways located outside of designated urban areas

Urban local - residential streets and minor roads within urban areas

Urban arterial - multi-lane major roads within designated urban areas

Urban freeway - multilane, divided, limited access highways located within urban areas

The default speed settings on rural linkages are somewhat higher than those for the corresponding urban linkages in order to account for the higher levels of traffic congestion within urban areas.
 

Environment Details


 

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