transportation data activities jane h. smith state transportation data administrator 770-986-1360...
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Transportation Data ActivitiesJane H. Smith
State Transportation Data Administrator770-986-1360
Local Centerline Mileage
Local Centerline Mileage
• In January 2011, GDOT Commissioner Vance Smith sent a letter to all of Georgia’s Elected Officials– 159 Counties– 531 Municipalities
• We requested the they report the total local public road centerline mileage (Paved or Unpaved)
Why Are We Doing This Now?
• This information is needed to comply with State and Federal Law
• LMIG funds will be distributed to Local Governments based on paved and unpaved centerline miles and population
• TIA also requires an accurate accounting of centerline miles to calculate funding for each Regional Commission
What Was The Result?
• As of May 3rd, we received reports from – 152 Counties (96%)– 325 Cities (61%)
• We provide the mileage to Local Grants Office– If local government reported, we provided that
mileage– If local government did not report, we provided
our recoded mileage
How Can You Help?
• Confirm that your local government has reported its Center Line Mileage to GDOT on the official Reporting Form
• As a Local Government, you are required within 90 days to inform GDOT when you have:– Acquired / Accepted / Abandoned a road– State Code 32-4-41 and 32-4-91
For Additional Information
Contact:
Doug AlexanderLocal Government Liaison / Data ManagerOffice of Transportation Data
770-986-1436
Statewide Centerline Project
Project Goals
• Develop a complete statewide public road centerline
• Keep the centerline Up-To-Date• Ensure accurate Local Government mileage• Ensure efficient statewide road inventory• Build relationships with Local Agencies • Help foster a cooperative environment
Centerline Data Issues
• Roads Extending Beyond or Stopping Short of County Boundary
• Topological Errors (Overlapping & Intersecting Road Segments, Dangles)
• Conflation Process Errors• Out-of-Date Centerlines• Bad Centerline Geometry• Inaccurate Attribution• Erroneously Coded Roads• Unresolved “Public” and “Unknown” Roads
Out-of-Date Centerline
The Centennial Olympic Park Vicinity
Updated Centerline
The Centennial Olympic Park Vicinity
Where Are We?
As of July 15, 2011• 4 Complete• 31 In Progress
How Can You Help?
Provide Digital (GIS) Street and Boundary Data Share Street Attribute Data Identify Road Ownership Resolve Boundary Road Issues Be Available To OTD For Consultations Via
Phone, E-Mail or Meetings Work With OTD and Neighboring Agencies To
Resolve Conflicts
For Additional Information
Contact:
Michael D. MorrisLocal Government CoordinatorOffice of Transportation Data
770-986-1366
2010 Urban Area Boundary Project
Begin Summer 2012
Urban and Rural Classification
After each decennial census, the Census Bureau identifies and classifies urban and rural areas.
The Census Bureau identifies urban and rural areas solely for the purpose of tabulating and presenting statistical data.
1906 - Urban areas of at least 2,500 people 1950 - Urbanized areas of 50,000 or more people 2000
Urban places of at least 2,500 people were identified outside urbanized areas.
Urban clusters of 2,500 - 49,999 were defined
17
1990 Atlanta Census Urban Area Boundary
Atlanta 1990 Census
2000 Atlanta Census Urban Area Boundary
Atlanta 1990 Census
Atlanta 2000 Census
2000 Atlanta Federal-Aid Urban Area Boundary
• FHWA "adjusted" or "smoothed" Urbanized Areas and Small Urban Areas that are used for transportation planning purposes
• Expands Census boundary to define boundaries to better reflect local conditions.
Atlanta 1990 Census
Atlanta 2000 Census
Atlanta 2000 Federal-Aid
Functional Classification System
Extent of Functional Systems
Percentage Guidelines For Federal Functional Classifications
Highway Functional Classification
Percent of Total
Rural Miles Urban Miles
Arterials 6 - 12 15 - 25Collectors 20 - 25 5 - 10Local roads 65 - 75 65 - 80
Preliminary Timeline
Phase I: Preliminary phase (Current – 6/30/12)
Phase II: Product Development (6/12 – 12/12)
Phase III: Local Government/FHWA Coordination (1/13 - 6/13)
Phase IV: Result Reporting (7/13 – 10/13)
For Additional Information
Contact:
Clayton Carter Federal Highway CoordinatorOffice of Transportation Data
770-986-1366