ctpp crash course
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CTPP Crash Course. Census Transportation Planning Products program. Penelope Z. Weinberger CTPP Program Manager AASHTO 10/16/2013 GIS in Transit Conference. What is the CTPP?. An AASHTO sponsored data program funded by member state transportation agencies - PowerPoint PPT PresentationTRANSCRIPT
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CTPP Crash Course
Census Transportation Planning Products
program
Penelope Z. WeinbergerCTPP Program Manager
AASHTO10/16/2013
GIS in Transit Conference
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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
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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
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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
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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)
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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-- Time arriving at work-- Number of workers-- Minority status-- Presence of children
Tables will have Disclosure Proofing
Large MOEs (@ 90%)
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Disclosure Rules Addressed
NCHRP 08-79 ($550K)Web Report 180
Producing Transportation Data Products from the ACS that Comply With Disclosure Rules
Means of transportation crosstabsAggregate Vehicles Used Aggregate Travel TimeMean HH Income Aggregate HH Income Aggregate Carpools Almost all Flow Tables
http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_w180.pdf
Tables Using Disclosure Proofed Data Set
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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
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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]
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How Can Transit Systems Use CTPP?
• Residence based or workplace based counts by Means of Transportation (MOT)
• Tract level flow analysis of MOT• MOT includes
– Bus or trolley bus– Streetcar or trolley car– Subway or elevated– Railroad– Ferryboat– Taxicab
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“Status Report” newsletter
http://www.fhwa.dot.gov/planning/census_issues/ctpp/status_report/
http://www.trbcensus.com/newsletters.html
New York City Transit's Environmental Justice Strategies:
Using CTPP Journey-to-Work Data to Perform Service Change Impact
Analysis by DemographicsTed Wang, MTA New York City Transit,
[email protected] Lu, MTA Metro-North Railroad, [email protected]
Alla Reddy MTA New York City Transit, [email protected]
Census Data Application for Title VI Service Equity Analysis
Nazrul Islam, Federal Transit Administration, [email protected]
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FHWA website
http://www.fhwa.dot.gov/planning/census_issues/ctpp/
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AASHTO website
http://ctpp.transportation.org/
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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
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CTPP websites
http://www.fhwa.dot.gov/planning/census_issues/ctpp/
http://www.TRBcensus.com
http://ctpp.transportation.org