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Putting a Transportation Perspective on Census Geography (April 11, 2010)
Ed Christopher Resource Center Planning TeamFederal Highway Administration
4749 Lincoln Mall Dr. Rm 600Matteson, IL 60443
Topics
• 2010 Census
• Urban Areas
• MSAs
• PUMAs
• TAZs
•CTPP Update
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2010 Census Day - APRIL 1st
Short Form
Population count
Age, Race, Sex, Owner/Renter
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http://2010.census.gov/2010census/take10map/
What is your Local Response Rate?
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Urban Boundaries
http://www.fhwa.dot.gov/planning/census/faqa2cdt.htm
Census Defined Urban Area (UA)
Adjusted Urbanized Area (UZA)
Metropolitan Planning Area (MPA)
Non-Attainment Area
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Boundaries - the Important thing
http://www.fhwa.dot.gov/planning/census/faqa2cdt.htm
Census Defined Urban Area (UA) - Population + $$$
Adjusted Urbanized Area (UZA) - Functional Class
Metropolitan Planning Area (MPA) - MPO Jurisdiction
Non-Attainment Area
The Letters UZA and UA often get mixed up
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Boundaries - some names people use
Census Defined Urban Area (UA)Census Urbanized Area (UZA)
Adjusted Urbanized Area (UZA)Federal Aid Urban Area (FAUA)FHWA Adjusted BoundaryAdjusted Urban(ized) Area
Metropolitan Planning Area (MPA)Planning AreaMPO Boundary
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100K - Threshold
Grandfathering
200K - Project Selection Authority
1 Million+ Special Funding and Requirements
NARC - Status Quo
AASHTO -Somewhat Vague
FHWA - Internal
House - T+I Committee, HR ____
Senate -
http://www.ampo.org/assets/685_finalampopdfoverviewappro.pdf
What’s an MPO?
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Census Defined Urban Area (UA)
http://www.edthefed.com/uza/UA_Update.pdffeb. 2009
2000 density based, automated process, identified urban clusters (2,500 pop), ignored place
boundaries and built from Census Blocks
2010 Census Bureau still deciding processInvestigating use of place of work data via ACS,
reviewing land use covers and digital elevation maps and satellite imagery, thinking about using household densities and building from Census Tracts.
Look for criteria for defining urbanized areas and clusters in Spring 2010 in Federal Register
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Webinar and other Materials
http://ctpp.transportation.org/
Q/As from Webinar
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Some Final Words on UAs
http://www.fhwa.dot.gov/planning/census/faqa2cdt.htm
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Metropolitan Statistical Areas
Metropolitan and Micropolitan Statistical Areas, Metropolitan Divisions, Combined Statistical Areas
Mega Regions
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PUMAs? -- What are they?
PUMAs are the zones used from PUMS data
Public Use Microdata Sample
PUMS data is based on individual census records and is available only at large geographic areas. Think of the PUMS dataset as the raw, disaggregate census sample data, at a large enough geographic level necessary to protect the confidentiality of the census respondent.
ACSSample
Standard Tabs
PUMS Records
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Why are PUMAs Important?
Let’s Look at Annual Data
● Annual Data
● 65K+
● Note the areas in gray
● We call this Swiss Cheese
NE Illinois (2008 pop estimate)
Chicago
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Why are PUMAs Important?
NE Illinois (PUMAs)
Tabulation Area for ACS
● Represent 100K
● Complete Coverage
● Smaller than Counties
● NO Swiss Cheese
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How many PUMAs should this area have?
http://www.census.gov/geo/www/maps/puma5pct.htm
City of Chicago 2000 PUMAs
2,896,016 (2000 Pop)
Why are PUMAs Important?
- Defines areas for analysis - Tabulation Area for ACS
Who Defines Them? - The Community - Led by State Data Center
When are They Defined? - Summer 2011 - Criteria out Spring 2010
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What is the CTPP?
CTPP is an umbrella program of dataproducts, custom tabulations, training, technical assistance, and research for the transportation community. CTPP uses data from U.S. Census Bureau, including American Community Survey (ACS).
Census Transportation Planning Products
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All States + DC
AASHTO Led
Oversight Board
Five Year period ~ 2011 (2012)
CTPP Program
Federal Technical Advisory GroupTRB Subcommittee -- List Serve (830 strong)Quarterly Newsletter -- OutreachSeveral Websites
Acquire Data and Develop Products 63%
Research, Training and Outreach 21%
Manage Program 3%
Board Discretion 12%
TOTAL $5,844,332
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StatesLaine Heltebridle, PA (Region I)Nathan Erlbaum, NY (Region I)Hui Wei Shen, FL (Region II)Paul Agnello, VA (Region II)
Phillip Mescher, IA (Region III)Ahmad Jaber, UT (Region IV)
Ayalew Adamu, CA (Region IV)
MPOsKuo-Ann Chiao, NYMTC
Steven Gayle, BMTSMell Henderson, MARCArash Mirzaei, NCTCOG
Guy Rousseau, ARCClara Reschovsky,MWCOG
Pete Swensson, TRPCVacant Ex Officio Members
Ed Christopher, FHWAMelissa Chiu, Census BureauAlison Fields, Census Bureau
Rich Denbow, AMPOElaine Murakami, FHWARobert Padgette, APTA
Alan Pisarski, ConsultantSteven Polzin, USF. CUTR
Nanda Srinivasan, TRB John Sprowls, FTA
Chair: Jennifer Finch, CO (Region IV)Vice Chair: Jonette Kreideweis, MN (Region III)
AASHTO Liaison:: Penelope Weinberger
17 voting members: 9 states and 8 MPOs
Consensus Decision Making
AASHTO CTPP Oversight Board (ACOB)
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Penelope WeinbergerCTPP Program Manager, AASHTO444 North Capitol Street NE Suite 249Washington, DC [email protected]://ctpp.transportation.org
Special Staff
Melissa ChiuCTPP Program ManagerCensu Bureau301-763-2421, [email protected]
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Data Products
Uses 2005-2007 ACSCompares to 2000Focused on TransportationIncludes Significance Tests
http://download.ctpp.transportation.org/profiles_2005-2007/ctpp_profiles.html
3-Year Data Profiles
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Coming in September
CTPP 3-Year Main Product
September 2010
2006, 2007, 2008
20,000 Pop. Areas
(County, Place, PUMAs)
Actual Flows
http://trbcensus.com/products/
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The 3-year Product Design
2000 Geography
MSA – EACH Principal City
Metropolitan Statistical Area
State-POW PUMA
State-PUMA
State-Place
State-County-MCD
State-County
Nation (US Total)
Product Structure
3-Parts
Part 1- Place of Residence
Part 2- Place of Work
Part 3- Flows between Home and Work
with On-Line Extraction Software
State
http://trbcensus.com/products/3-year_ACS/ctpptables-09apr01-rev2.xls
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3-year CTPP Product Summary
Highlights Low LightsBased on CTPP2000 Tables
Many NEW Univariate Tables
More Age Tables
Streamlined Race Tables
More HH and HH Lifecycle Tables
More English Proficiency Tables
Way more Flows Tables
Incomplete Coverage
RoundedReduced Number of Crosstabs with Mode
-- Travel time-- Household income-- Vehicle availability-- Age-- Time leaving home
Tables will have Suppression
-- Means based on 3 values
-- 3 records in Flow
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CTPP 5-year data product
CTPP 5-Year Main Product
Fall 2012
2006, 07, 08, 09, 2010
Small Areas
(Tract, TAZ, Block Group)
New TAZs
Synthetic Data and Flows
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“NEW” TAZs Traffic Analysis Zones
http://trbcensus.com/notes/ACSTAZs.pdf
• Developed in Summer 2011
• TAZs will nest with TADs
• GIS equivalency process
• Funded under Consolidated Purchase
• FHWA is contacting state DOTs to set up contacts Subcommittee working on TAZs
Guy Rousseau-chairing
TAZTraffic Analysis
Zone
Traditional Size
TADTraffic Analysis
District
20,000 population
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Building the 5-year data
Key product to the whole CTPP effort
Hinges on some key research
NCHRP Project 8-79 ($550K)Producing Transportation Data Products from the American Community Survey that Comply with Disclosure Rules Contractor selected Nov 2009Westat Inc. (signed contact January)
http://www.trb.org/TRBNet/ProjectDisplay.asp?ProjectID=2708
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Resources
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“Status Report” newsletter
http://www.fhwa.dot.gov/ctpp/status.htm
http://www.trbcensus.com/newsletters.html
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ACS Data Profiles
http://ctpp.transportation.org
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Report 588 A Guidebook for Using ACS Data forTransportation Planning
275 pagesTrend AnalysisHow to recalculate
Margins of Error
http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_rpt_588.pdf
Training and Technical Assistance
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A Compass for Understanding And Using ACS Data
Set of user-specific handbooks
Train-the trainer materials
E-learning ACS Tutorial
http://www.census.gov/acs/www/UseData/Compass/compass_series.html
Working with ACS
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Getting Data - Census Standard Products
http://factfinder.census.gov
FactFinder
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What is on your mind?
http://www.edthefed.com/presentations/GIS-T(04-12-2010).ppt
For a free copy of these slides go to
http://www.dot.gov/ctpp
http://www.TRBcensus.com
http://ctpp.transportation.org