GIS Library Contents - Metadata
Drive time rings (5, 10, 20 and 30 minutes) to TAA Air Cargo facility.
This metadata information is subject to our disclaimer. Metadata information presented here is maintained manually. Therefore, date-sensitive fields such as feature count and date of last update may not be up-to-date. All metadata is subject to errors inherent in a manual process.
|Descriptive name||Drive time rings (5, 10, 20 and 30 minutes) to TAA Air Cargo facility.|
|Spatial domain||NAD83 HPGN|
|Abstract||This drive time layer to Tucson Airport Authority Cargo Facilty was developed to be utilized in the parcel overlay services to support Regional Site Selector website. Drive times were created with the "Generate Service Area" tool. The intersection of Los Reales Rd and Airport Dr is the junction used as the tool's "Facilities" input. |
The network was built using 2/15/17 stnetall.shp and stspeed.shp to compute a simple time cost associated with each segment. Where speed limits are not expressed in stspeed.shp major facilities were researched in google street view (for state facilities and Aerospace Pkwy) and remainder of segments were assigned a 25 limit.
|Known errors/qualifications||This simple drive time cost anaylsis is based on speed limit and segment length.|
|Thumbnail Map||dt_taa.pdf (469,704 bytes, PDF created 07/19/2022 )|
|Projection||NAD83 HPGN (Parameters)|
|Field/value metadata||Field metadata|
|Source contact||Josh Prope|
|Source document or file name|
|Date of last data update|
(This date may not be current.)
|Last data update by||Josh Prope|
|Date/time last touched - Meaning?||2020-11-05 11:05 PM - Enterprise GDB|
|2020-11-05 10:34 PM - Shapefile - Library input format|
|See coverage files, if any, for date.|
|Original conversion by||Steve Whitney|
|Pima County ITD GIS contact||Steve Whitney|
|Alternate Pima County ITD GIS contact|
|On Pima County Geospatial Data Portal?||No|