Regional GIS Group Meeting

Wednesday, July 11th, 200710:00 AM - 1:00 PM

Duke Room – Loudermilk Center, B-Level

Cooperative Purchase Agreement

• Save money for participants• Opportunity for counties who were

unable to purchase before• Gives access to more coverage• Individual counties have paid up to

$580K

Cost

• Based on Earth Data quote• Cost: $1,390,296 or $212/square mile• Resolution: 6” pixel• Example: 20 County region• Breaks out cities separately for added

savings• Estimates of cost and methodology for

procurement of imagery may change depending on number of participants

County Estimates

City Estimates

What Next?

• Is this something we wish to consider?

• Other products to consider?• CIR/LIDAR etc.• Specifications?• What should be the next steps?

Atlanta Region Street DataCollection Analysis

Who Collects/Creates Street Data?

• City Government

• County Government

• Regional Development Centers

• State Government

• Federal Government

•

Georgia State Law

• Local Governments are required to submit acceptance of new roads, reporting of reconstructed roads, or abandoned roads according to Georgia State Code 32-4-41(4) and 32-4-91(b) – (4) A county shall keep on file in the office of the county clerk, available

for public inspection, the map of the county road system prepared by the department as provided for in subsection (a) of Code Section 32-4-2. In addition to keeping on file a map of the county road system, the county shall notify the department within three months after a county road is added to the local road or street system and shall further notify the department within three months after a local road or street has been abandoned. This notification shall be accompanied by a map or plat depicting the location of the new or abandoned road;

• Disconnect : Data not reported regularly

Street Data Collection Objectives

• MONEY!!!$$$• Planning • Mileage • Condition• Safety and traffic flow • Cartographic needs• Network analysis• Geocoding• E911

Collection Methods

•Digitized from plats•Digitized from aerials•Digital submission•GPS•Field collection

Historical State Data Collection

• Process in 4th decade• RC data file (non-spatial) created in

1976• First DLGF map created early ’90s• No addressing, indirect street names

GDOT Data Reporting

• Need local government to report new, reconstructed, or abandoned roads

• Annual reporting of mileage & transportation data to Federal Government

• Needed to receive fair allotment of transportation funds

• Road maps for 159 counties

Collaboration

• Foster relationships with appropriate persons involving GIS data • Data sharing• Reduce data redundancy• Improve efficiency• Sharing of scripts, tools

Street Data Fields  ST PREFIX ST NAME ST TYPE ST SUFFIX

ST NAME NON PARS ADDS L ADDS R ZIP L ZIP R ZIP

DLGF x x x x x x x x x  

Cherokee x x x x x x x      

Clayton x x x     x x x x  

Cobb x x x x x          

Dekalb x x x x   x x x x  

Douglas x x x x x x x      

Fayette         x          

Fulton x x x x x x x      

Gwinnett x x x x x x x     x

Henry         x x x      

Rockdale x x x x   x x     x

Barrow         x          

Carroll                  

Forsyth x x x x x x x x x  

Hall   x x              

Newton x x x x x x x      

Paulding                  

Spalding x x  x x    x x  x x  

Walton         x          

Bartow                  

Coweta         x          

Street Attribution

• Federal Standards – 98 • State Characteristics – 110• Local Characteristics – approx. 52• Surface type/dimensions, shoulders,

travel lanes, speed limit, sidewalks…• Already have engineering standards • Attributes tool

GDOT RC Contract

• ARC working with GDOT to improve data collection processes

• Facilitate work with local governments to collect data

• GDOT migrating existing database to more modern framework

• GDOT working to receive data via web submission from local governments

State and Regional Street Network

• Form consortium• Create unified data sharing agreement • Adopt standards due to varying levels of accuracy and quality • Data translation/ integration• Develop data model, software tools

Considerations

Other Models: Enterprise street data efforts

• Washington DOT• South Dakota DOT• SANDAG: (San Diego Association of

Governments) -Formed Streets Committee-City provides data to county, edited

in SDE directly• Mecklenburg-Union MPO:

-Formed consortium with City/County Govs.

-Digital CAD submissions required, added to SDE

Discussion

•How can Local Governments work together with GDOT?

•What are the challenges?•What incentives would help?