ctpp overview
DESCRIPTION
CTPP Overview. Census Transportation Planning Products program. Offers a set of Data Tables designed and paid for by transportation planners for transportation planners. What is the CTPP?. An AASHTO sponsored data program funded by member state transportation agencies - PowerPoint PPT PresentationTRANSCRIPT
CTPP Overview
Census Transportation Planning Products
program
Offers a set of Data Tables designed and
paid for by transportation planners
for transportation planners
What is the CTPP?
An AASHTO sponsored data program funded by member state transportation agencies
Operates with support from FHWA, RITA, FTA, Census Bureau, MPOs and TRB
The program includes:Data productsTraining and technical assistanceResearch
Designed for the transportation community
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StatesLaine Heltebridle, PA (Region I)
Greg Slater, MD (Region I)Regina Colson, FL (Region II)
Juyin Chen, VA (Region II) Phillip Mescher, IA (Region III)
Cory Pope, UT (Region IV) Erik Sabina, CO (Region IV)
MPOsShimon Israel, MTC
Brian Lasagna, BCAGMell Henderson, MARCArash Mirzaei, NCTCOG
Guy Rousseau, ARCClara Reschovsky, MWCOG
Tom Faella, LAPCMaryAnn Waldinger, COMPASS
Ex Officio MembersKen Cervenka, FTA
Ed Christopher, FHWARich Denbow, AMPO
Alison Fields, Census BureauMatt Hardy, AASHTO
Jonette Kreideweis, ConsultantLi Leung, BTS
Brian McKenzie, Census BureauElaine Murakami, FHWAJanet Oakley, AASHTO
Alan Pisarski, ConsultantSteven Polzin, USF. CUTR
Melanie Rapino, CensusNanda Srinivasan, TRB
Transportation Director, NARCLiang Long, Technical Adjunct
Chair: Tracy Larkin-Thomason, NV (Region IV)Vice Chair: Susan Gorski , MI (Region III)AASHTO Liaison:: Penelope Weinberger
17 voting members: 9 states and 8 MPOs
Guided by an AASHTO Oversight Board
CTPP Data Products
CTPP data products use data from the US Census Bureau American Community Survey (ACS)
The ACS replaced the decennial census “long form” and requires accumulation of data over multiple years for small area tabulation
1 Year of data for places with 65,000+ people
3 Years of data for places with 20,000 + people
5 Years of data for smaller geographic areas, e.g. Tracts and Block Groups
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Applications of CTPP Data Products
• Performance measurement
• Modal share analysis• Environmental justice• FTA New Starts/Small
Starts• Travel Demand
Modeling
• Livability analysis• Corridor planning• Air quality modeling• Trend analysis• Descriptive statistics• Travel forecasting
Some Key Data Items Include
• Data on Households– Size, income, vehicles per household
• Data on Workers– Age and gender, occupations, earnings
• Data on Journey to Work– Usual mode to work, commuting time, work
departure time
• Data on Workplaces– Work locations, times of arrival at work
CTPP Data Concepts
Summarized data by Place of Residence Place of Work Flows from Home to Work
Custom Geography (Local TAZs)
Unique Universes (e.g. workers in HHs)
CTPP Data Products
CTPP Has three main data products but our focus today is only on one
Data Profiles
CTPP 3-year Tables
CTPP 5-year Tables
The CTPP 5-year Tables
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Requires Disclosure Proofing
5-year CTPP Data Product (2010 CTPP5)
(2010 CTPP5) Product Summary
Highlights Low LightsBased on CTPP2000 Tables
Many NEW 1-way Tables
More Age Tables
Streamlined Race Tables
More HH and HH Lifecycle Tables
More Geographic breakdowns or levels
New TADs
Way more Flows Tables
RoundedLimited Number of Crosstabs with Mode
-- Travel time-- Household income-- Vehicle availability-- Age-- Time leaving home-- Minority status-- Presence of children
Tables will have Disclosure Proofing
Large MOEs (@ 90%)
Disclosure Rules Eliminated
NCHRP 08-79 ($550K)Web Report 180
Producing Transportation Data Products from the ACS that Comply With Disclosure Rules
NCHRP is funded by State DOTs SP&R
http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_w180.pdf
Table Summary using 5-year Table list
Means of transportation Aggregate Vehicles UsedAggregate Travel Time Mean HH IncomeAggregate HH Income Aggregate CarpoolsAlmost all Part 3 Tables
Tables Using Disclosure Proofed Data Set
http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_w180.pdf
TAZ/BG Tract TAD Place County PUMA StatePart 1
Regular 111Disc. Proofed 77
Part 2Regular 50Disc. Proofed 65
Part 3Regular 2Disc. Proofed 38
5-year Geography and Flows
● Asymmetrical Flows (in red)
● Small Areas defined by MPOs in MPO areas and States Elsewhere
● Tracts are Defaults for Small Areas
● Default TADs defined by AASHTO
● UZA tables for Part 1 ONLY
● MCD Only States
FROM / Residence TO / Workplace
State State
State-County State-County
State-County-MCD State-County-MCD
State-County-Place State-County-Place
MSA MSA
State-County State-Place
State-County-MCD State-Place
State PUMA (2000) State-Place
PUMA (2000) POW PUMA (2000)
Tract Tract
TAD TAD
Locally Defined Small Area Locally Defined Small Area
TAD Locally Defined Small Area
Locally Defined Small Area TAD
State-Place Locally Defined Small Area
Locally Defined Small Area State-Place
2000POW PUMAs
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What is a POW PUMA?
State PUMAPOW
PUMACA 233 72IL 87 36
ME 10 10NC 58 48WA 46 22
If the county contains two PUMAs, then those two PUMAs will be aggregated to form a POW PUMA
If a county contains only a portion of a PUMA, the POW PUMA will encompass the county containing the rest of the PUMA
2000PUMAs
POW PUMAsMust comprise a whole county or multiple counties
http://www.census.gov/geo/reference/pdfs/puma/puma_tutorial.pdf
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PUMAs to POW PUMA
Who delineated the POW PUMAs?
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Recapping Geography
● Small Areas defined by MPOs in MPO areas and States Elsewhere
● Tracts are Defaults for Small Areas
● Default TADs defined by AASHTO
● Urbanized Area tables only available for Part 1 data
● MCD Only in 12 States
Penelope WeinbergerCTPP Program Manager, AASHTO444 North Capitol Street NE Suite 249Washington, DC [email protected]://ctpp.transportation.org
Special Staff and Contacts
Brian McKenzieCTPP Program ManagerCensus Bureau301-763-2454
Liang LongCTPP Technical Support [email protected]
Resources
“Status Report” newsletter
http://www.fhwa.dot.gov/planning/census_issues/ctpp/status_report/
http://www.trbcensus.com/newsletters.html
FHWA website
http://www.fhwa.dot.gov/planning/census_issues/ctpp/
AASHTO website
http://ctpp.transportation.org/
Training Materials
http://ctpp.transportation.org/Pages/trainingresources.aspx
AASHTO CTPP Website
E-Learning
Recorded Webinars
http://ctpp.transportation.org/Pages/webinardirectory.aspx
http://ctpp.transportation.org/Pages/elearningmodules.aspx
CTPP websites
http://www.fhwa.dot.gov/planning/census_issues/ctpp/
http://www.TRBcensus.com
http://ctpp.transportation.org