Pima County Geographic Information Systems logo

GIS Library Contents - Metadata

Automatic Road Analyzer(ARAN) van local road GPS points - 2008, 2009, 2010

Layer Thumbnail Map

This metadata information is subject to our disclaimer. Metadata information presented here is maintained manually. Therefore, date-sensitive fields such as date of last update may not be up-to-date. All metadata is subject to errors inherent in a manual process.

Descriptive nameAutomatic Road Analyzer(ARAN) van local road GPS points - 2008, 2009, 2010
File namestvl2010
Spatial domainEastern Pima County
AbstractThis layer is a compilation of the data captured in the years 2008, 2009 and 2010 for the three phases of local road collections.

As the van is driven, a data point is captured every 26.4 feet by GPS, along with 2 image frames for each point. International Roughness Index (IRI) and Pavement Surface Evaluation and Rating (PASER) data is attributed to each data point, with IRI automatically captured by a sensor, and PASER data input by the van personnel. Data points are captured from driving in both directions, when not driving on a one-way road, therefore data points are available for both sides of a road.
Known errors/qualifications
Feature typepoint
Feature count 667,677
Thumbnail Map stvl2010.pdf PDF file format   (7,623,838 bytes, PDF created 07/20/2022 )
ProjectionNAD83 HPGN (Parameters)
Field/value metadata Field metadata
Source organizationCity of Tucson
Source contact
Source document or file name
Source date2010
Source scale
Source formatUnknown
Date of last data update
(This date may not be current.)
Last data update byFelipe Morales
Date/time last touched - Meaning? 2021-02-08  11:45 PM - Enterprise GDB
  2021-02-08  11:07 PM - Shapefile - Library input format
  See coverage files, if any, for date.
LineagePCDOT pavement management (PM) data is stored and retrieved from the CarteGraph system. The PM data is stored by road segment within CarteGraph, and brought into the GIS through the implementation of a Linear Referencing System (LRS)/Dynamic Segmentation (DynSeg). An LRS/DynSeg allows the PM data to be integrated into the GIS without the need to modify the underlying geometry of the road network. The GIS road network's geometry is segmented from intersection to intersection, and PM segments can span multiple GIS segments and/or stop and begin at a distance that is offset from an intersection.
On maintenance?No
Maintenance organization
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

See Metadata Field Descriptions.
Back button GIS Library Data Layer Metadata search page.