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Drive time rings (0-5 and 5-10 minutes) to an interstate ramp.

Layer Thumbnail Map

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 nameDrive time rings (0-5 and 5-10 minutes) to an interstate ramp.
File namedt_int
Spatial domainNAD83 HPGN
AbstractThis drive time layer from interstate 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 interstate ramp junctions were used as the tool's "Facilities" inputs. 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/qualificationsThis simple drive time cost anaylsis is based on speed limit and segment length.
Feature typepolygon
Feature count 2
Thumbnail Map dt_int.pdf PDF file format   (460,010 bytes, PDF created 07/19/2022 )
ProjectionNAD83 HPGN (Parameters)
Field/value metadata Field metadata
Source organizationPAG
Source contactJosh Pope
Source document or file name
Source date20170215
Source scale
Source formatUnknown
Date of last data update
(This date may not be current.)
Last data update byJosh Pope
Date/time last touched - Meaning? 2020-11-05  11:04 PM - Enterprise GDB
  2020-11-05  10:34 PM - Shapefile - Library input format
  See coverage files, if any, for date.
On maintenance?Yes
Maintenance organizationPAG
Maintenance frequencyVaries
Maintenance description
Original conversion bySteve Whitney
Pima County ITD GIS contactSteve Whitney
Alternate Pima County ITD GIS contacte-mail address
On  Pima County Geospatial Data Portal? No

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