Acute Care Hospital Travel Times
These polygons were built using the RING polygon generation setting in Network Analyst. Each polygon represents the area covered by a 5 minute marginal travel time limit to the facility (e.g., a ring with between 0 and 5 minutes to a particular hospital is the total area within 5 minutes of a hospital, following the road network; a 25-30 minute ring coveres the area between 25 and 30 minutes; etc.).Rings are generated out to 60 minute of travel time to a particular facility.Rings for different facilities are allowed to overlap each other.Specific analysis settings for polygons are as follows:Cost/Impedance: 5 Minute increments, up to 60 minutes from the facilityDirection: Inbound, towards facilityRestrictions applied:Avoid Pedestrian ZonesAvoid WalkwaysDriving a Passenger Car--YesObey Oneway StreetsThrough Traffic ProhibitedUse Street Heirarchy--NO!!!Street Network Used: 2013 - StreetMap™ North America, Publication Date 06-01-2013. Distributed by ArcGIS Development Team (909-793-2853), in conjunction with TomTom North America.
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