Updating the Urban Boundary and Functional Classification of New Jersey Roadways using 2010 Census data

Transcription

1 Updating the Urban Boundary and Functional Classification of New Jersey Roadways using 2010 Census data By: Glenn Locke, GISP, PMP 1 GIS-T May, 2013

2 Presentation Overview Purpose of Project Methodology Urban Boundary Functional Class Questions and Answers 2

3 Purpose of Project Update functional classifications due to changes in the urban boundary as a result of the 2010 US Census data. Re-assess the functional classification of New Jersey roadways according to the character of service that they are intended to provide, and changes to the system since

4 Federal-Aid highway funding Importance of Project Roadway design impacts Priority for upgrades and maintenance Third party usage 4

5 Background The Federal-Aid Highway Act of 1973 Functional Classification to update and modify the Federal-aid highway systems. Federal-Aid highway funds are provided to NJDOT for Construction, Reconstruction Improvement of eligible Federal-Aid highways. Funding is directly related to the functional classification of a route. FHWA requirement to update the urban boundary and functional class of roadways every 10 years. Functional classification system update must be preceded by the update of the urbanized area boundary. 5

6 Refine the Urban Boundary The Process Update the Functional Class Evaluate the New Urban Area Assess Need for Additional Functional Class Changes Conform to FHWA Allowable % Ranges Update the Federal Aid System National Highway System (NHS) Surface Transportation Program (STP) Prepare Maps and GIS Files for Distribution 6

7 Initial NJDOT Review Review Process Metropolitan Planning Offices (MPO) Review NJDOT Adjustments Resolutions from MPOs NJDOT Approval FHWA Approval 7

8 Updating the U.S. Census Bureau 2010 Urban Boundary Started with a Esri shape file based on US Census TIGER files US Census urban areas delimited by census tract boundaries which do not always agree with natural, man-made, or political lines 8

9 Definitions 9 Urban Area - A Census-designated area consisting of a central core and adjacent densely settled territory that together contain at least 2,500 residents. The Census Bureau uses the term "urban area" to refer to both UZAs and UCs collectively. Urbanized Area (UZA) - A Census-designated urban area with 50,000 residents or more. Urban Cluster (UC) - A Census-designated urban area with at least 2,500 residents and no more than 49,999 residents.

10 Adjusted UZA Adjusted UZA - A Census-defined UZA boundary that has been adjusted by a State DOT to include additional territory. Typically created to smooth irregular UZA boundaries, the Adjusted UZA must be submitted to FHWA for approval. The Adjusted UZA: Must encompass the entire Urbanized Area or urban cluster area as designated by the Bureau of Census. Should be one, single contiguous area. Should encompass areas outside of municipality boundaries that have urban characteristics with residential, commercial, industrial, or national defense land uses that are consistent with or related to the development patterns with the boundary. Should encompass all large traffic generators that are within a reasonable distance from the urban area (e.g., fringe area public parks, large places of assembly, large industrial plants, etc.). This would include transportation terminals and their access roads (e.g., airports, seaports). 10

11 11 Adjusted UZA

12 Urban Boundary Smoothing Process Followed identifiable map features Roads Water Municipal Lines Minimized urban boundary changes along routes Eliminated minor rural holes surrounded by urban areas 2000 NJDOT Urban Boundary 2010 Census Data Smoothed Area 12

13 Project SharePoint Site /SitePages/Home.aspx Urban Boundary Comment Resolution Urban Boundary Maps and GIS Data 13

14 14 Urban Boundary Comment Resolution

15 Functional Classification Overview Urban Boundary Update FHWA Guidelines Access vs. Mobility Functional Classes General Detailed 15

16 General Functional Classifications Arterials Collectors Locals 16

17 Functional Classification Interstate Other Freeway/Expressway Other Principal Arterial Minor Arterial Major Collector Minor Collector Local Detailed Functional Classification Descriptions Description Interstate System Freeways and Expressways not part of the Interstate System Principal Arterials with no control of access Links populated areas to highways and provides greater service than collectors Links populated areas to roadways with higher classifications Links locally important traffic generators to roadways with higher classifications Primarily provides access to adjacent land and is intended to service travel over relatively short distances compared to roadways with higher classifications 17

18 Methodology Utilize Dynamic Segmentation Update Routes In the New Urban Area Assess Need for Additional Functional Class Changes Meet FHWA Allowable % Ranges When Possible Prepare Maps and GIS Files 18

19 Dynamic Segmentation Functional class data exists in a SQL Server database table stored by route and milepost Data is displayed on maps using dynamic segmentation Symbology varies based on functional class Milepost

20 Update Routes in New Urban Area Create GIS polygons for areas of urban expansion 20 Evaluate roadways within each polygon for functional usage

21 Assess Need for Additional Changes Review Relevant Data Update functional classification based on: Change in the roadway characteristics/use Divided/Undivided Number of lanes Speed limit Traffic data Development Bus stops Minimize Functional Class Changes Along Routes Maintain Topological Connectivity 21

22 Maintain Topological Connectivity All routes must terminate at a route of the same or higher functional class. CORRECT Principal Arterial Principal Arterial 22 Stub connections are allowed only in rare circumstances such as a coast line, international boundary, or major airport. INCORRECT Principal Arterial Minor Arterial

23 Meet FHWA Allowable % Ranges FUNCTIONAL CLASS FHWA ALLOWABLE PERCENTAGE RANGE (%) % MILES RURAL PRINCIPAL ARTERIAL 2-4 % MILES RURAL PRINCIPAL ARTERIAL PLUS MINOR ARTERIAL 6-12 % MILES RURAL COLLECTOR % MILES LOCAL ROAD % MILES URBAN PRINCIPAL ARTERIAL 5-10 % MILES URBAN PRINCIPAL ARTERIAL PLUS MINOR ARTERIAL % MILES URBAN COLLECTOR 5-10 % MILES LOCAL ROAD

24 2008 FHWA Memo additional study is needed to determine how valid the existing extent guidance may be, how it may be adapted to the rural/urban neutral "world," and what, if any, different extent guidance should be provided in the future. Until additional study is completed, States should adhere to the simplified extent guidance Category All Arterials and Collectors 0 to 35% Rural Principal Arterials 0 to 4% Urban Principal Arterials 0 to 10% Percentage Range Although rural and urban Principal Arterials will be consolidated into Principal Arterials, rural and urban data will continue to be created in the HPMS database by combining functional class and rural/urban designation codes. 24

25 Project SharePoint Site /SitePages/Home.aspx Functional Classification Comment Resolution Functional Classification Maps and GIS Data 25

26 Live-link geodatabase attribute table to Excel using standard ODBC connection Use conditional formatting in Excel to quickly flag variances from acceptable mileage ranges FHWA Mileage Reporting 26

27 Data Validation 27 Data was validated using custom VB tools designed by Michael Baker, Jr. Inc. Validation included QA/QC for: Milepost/route gaps Contiguous sections w/same functional class Milepost overlap Milepost undershoot Null fields Within valid limits of route

28 Maps and GIS Files Urban Boundary Maps 21 county, 3 MPO, and 1 Statewide maps PDF and GIS data available on project SharePoint Site Comment tracking form on project SharePoint Site Functional Classification Maps 28

29 For More Information FHWA Functional Classification Manual FHWA Home Page NJDOT Michael Baker Jr., Inc. (609)

30 Thank you NJDOT Bureau of Transportation Data & Safety 1035 Parkway Avenue Trenton, NJ Michael Baker Jr., Inc., GIT Department, Hamilton NJ 300 American Metro Boulevard Hamilton, NJ Phone Fax