GA STARS (State Transportation And Report Statistics)

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Frequently-anticipated questions:

What does this data set describe?

Title: GA STARS (State Transportation And Report Statistics)
Abstract:
A data set showing the locations of traffic counters (TC) throughout the state of Georgia. This is migrating to predominantly GPS coordinates but, those which have not been collected are located using milepoint or midpoint via event mapping on a measured route layer. GPS collection and integration will proceed on a yearly basis until all TC locations have been accurately located. Portable traffic counters utilizing tubes installed across the road surface collect the number of vehicles and can classify the types of vehicles as well.
  1. How should this data set be cited?

    Georgia Department of Transport, Office of Transportation Data, 06/01/2011, GA STARS (State Transportation And Report Statistics).

    Online Links:

    • https://data.georgiaspatial.org/index.asp?body=download&dataID=41250

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -85.572403
    East_Bounding_Coordinate: -80.754531
    North_Bounding_Coordinate: 34.996874
    South_Bounding_Coordinate: 30.344547

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 1901
    Ending_Time: 12/31/2010
    Currentness_Reference: publication date

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • Entity point (0)

    2. What coordinate system is used to represent geographic features?

      The map projection used is Lambert Conformal Conic.

      Projection parameters:
      Standard_Parallel: 31.416667
      Standard_Parallel: 34.283333
      Longitude_of_Central_Meridian: -83.500000
      Latitude_of_Projection_Origin: 0.000000
      False_Easting: 0.000000
      False_Northing: 0.000000

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.000328
      Ordinates (y-coordinates) are specified to the nearest 0.000328
      Planar coordinates are specified in survey feet

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.

      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:
      Altitude_Resolution: 0.000122
      Altitude_Encoding_Method:
      Explicit elevation coordinate included with horizontal coordinates

  7. How does the data set describe geographic features?

    GASTARS2010_Merge

    OBJECTID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    COUNTY_CODE

    TRAFFIC_COUNTER_NUMBER

    RCLINK
    Identification number linking route data to Road Characteristics (RC) file data; Route ID = characters 5-8 plus characters 9-10, a suffix.

    BEGINNING_MILEPOINT
    Calibrated to a corresponding Traffic Counter and used as linear reference

    ENDING_MILEPOINT
    Calibrated to a corresponding Traffic Counter and used as linear reference

    MIDPOINT_OF_SEGMENT

    AADT_2010

    TRUCK_PERCENTAGE_2010

    TRAFFIC_COUNT_COLLECTION_TYPE_2010

    TRAVEL_DIRECTION_2010

    AADT_2009

    TRUCK_PERCENTAGE_2009

    TRAFFIC_COUNT_COLLECTION_TYPE_2009

    TRAVEL_DIRECTION_2009

    AADT_2008
    Gives the number of vehicles that have traveled over the Traffic Counter.

    TRUCK_PERCENTAGE_2008

    TRAFFIC_COUNT_COLLECTION_TYPE_2008

    TRAVEL_DIRECTION_2008

    AADT_2007
    Gives the number of vehicles that have traveled over the Traffic Counter.

    TRUCK_PERCENTAGE_2007

    TRAFFIC_COUNT_COLLECTION_TYPE_2007

    TRAVEL_DIRECTION_2007

    AADT_2006
    Gives the number of vehicles that have traveled over the Traffic Counter.

    TRUCK_PERCENTAGE_2006

    TRAFFIC_COUNT_COLLECTION_TYPE_2006

    TRAVEL_DIRECTION_2006

    AADT_2005
    Gives the number of vehicles that have traveled over the Traffic Counter.

    TRAFFIC_COUNT_COLLECTION_TYPE_2005

    TRAVEL_DIRECTION_2005

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    Georgia Department of Transportation; Office of Transportation Data
    c/o Customer Service, Reporting, and Map Sales Branch
    5025 New Peachtree Road
    Chamblee, Georgia 30341
    U.S.A.

    770-986-1436 (voice)
    770-986-1139 (FAX)
    OTDCustomerService@dot.ga.gov

    Hours_of_Service: 8:00 AM - 4:45 PM, M-F, Subject to all Offical State Holidays

Why was the data set created?

To clearly and concisely display the 20,000+ traffic counter locations collected by the GA Department of Transportation. The count values collected at each TC site represent the number of vehicles crossing that particular traffic counter during a standardized time, typically 48-hours. Adjustment factors are then applied to these raw 48 hour traffic counts to generate the Average Annual Daily Traffic (AADT) which is used for a number of applications including the generation of the annual Highway Performance Monitoring System (HPMS) reports, future traffic forecasting, and the validation for road improvements.

How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

    (process 1 of 1)

    Person who carried out this activity:

    Georgia Department of Transportation, Office of Transportation Data
    c/o Customer Service, Reporting and Map Sales Branch
    5025 New Peachtree Road
    Chamblee, Georgia 30341
    U.S.A

    (770) 986-1436 (voice)
    (770) 986-11448 (FAX)
    OTDCustomerService@dot.ga.gov

    Hours_of_Service: 8:00 AM - 4:45 PM, M-F, Subject to all Official State Holidays
  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

  5. How consistent are the relationships among the observations, including topology?

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:
Accessibility to the data shall comply with all relevant Federal, State, and Local laws. All data is considered a public record and subject to the provisions of the federal Open Records Act and the Official Code of Georgia (Chapter 50-18, Article 4 Inspection of Public Records).
Use_Constraints:
The Georgia Department of Transportation and the Federal Highway Administration reserve a royalty-free, non-exculsive, and irrevocable license to reproduce, publish, or otherwise use, and authorize others to use, the work for government purposes. Users should exercise their own judgment on the scope of work for which this dataset is being used.

  1. Who distributes the data set? (Distributor 1 of 1)

    Georgia Department of Transportation, Office of Transportation Data
    c/o Customer Service, Reporting, and Map Sales Branch
    5025 New Peachtree Road
    Chamblee, GA 30341
    U.S.A.

    (770) 986-1436 (voice)
    (770) 986-1448 (FAX)
    OTDCustomerService@dot.ga.gov

    Hours_of_Service: 8:00 AM - 4:45 PM, M-F, Subject to all Official State Holidays
  2. What's the catalog number I need to order this data set?

    Downloadable Data

  3. What legal disclaimers am I supposed to read?

  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 02-Nov-2011
Metadata author:
Georgia Department of Transportation, Office of Transportation Data
c/o Customer Service, Reporting, and Map Sales Branch
5025 New Peachtree Road
Chamblee, GA 30341
U.S.A.

(770) 986-1436 (voice)
(770) 986-1448 (FAX)
OTDCustomerService@dot.ga.gov

Hours_of_Service: 8:00 AM - 4:45 PM, M-F, Subject to all Official State Holidays
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

Generated by mp version 2.9.6 on Wed Nov 02 17:15:24 2011