federal data for modelers ed christopher resource center planning team federal highway...
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Federal Data for Modelers
Ed Christopher Resource Center Planning TeamFederal Highway Administration
19900 Governors DriveOlympia Fields, IL 60461
708-283-3534
Federal Data for Modelers: Are you prepared Federal Data for Modelers: Are you prepared for the future?for the future? 2:00 pm - 4:00 pm2:00 pm - 4:00 pm
Census Transportation Planning Products (CTPP) ProgramEd Christopher, FHWA Resource Center
American Community Survey (ACS)Melissa Chiu, US Census Bureau Elaine Murakami, FHWA-Planning
Longitudinal Employment Household Dynamics (LEHD) Matthew Graham, US Census Bureau
National Household Travel Survey (NHTS) Heather Contrino, FHWA
Workshop/Session S1
National Household Travel Survey
01/17/01
Please remember, a trip is whenever you go from one address to another. OMB Nos.: 2139-0008; 2125-0545 Have this travel diary by the phone when the interviewer calls. You do not need to mail the diary back to us. Thanks Expiration date: xx/xx/xx
Example of Trips on a Travel Day
Trip 2 Walk Work
Home
Trip 4 Walk, subway, car
Lunch at Restaurant
Trip 5 Car
Trip 6 Car
Grocery store
Daycare center
Trip 1 Car, subway, walk
Trip 3 Walk
Obtains trips from one address to another by all modes…
NHTS Core Data Content
Household Income, composition, location
Person Age, sex, race, ethnicity, worker and student status,
citizenship, education
Geography High level geography – urban, rural, suburban, state and
national analyses
Vehicles Make, model, year, mileage, alternative fuels, commercially
licensed
Trips Mode, time of day, purpose, vehicle occupancy, distance, trip
length
NHTS – Two Components
National Study Serves USDOT, Congress, and White House Resource for State, metro areas (MPOs), etc. 40 years of trend data on U.S. travel behavior Sample size: 25,000 households
Add-On Program Service to States and MPOs since 1990 Allows States and MPOs to purchase additional
samples 2008 sample size: 125,000 (a doubling from
2001)
125,000 Add-On Samples
Florida DOT
Georgia DOT
South Carolina DOT
North Carolina DOTPiedmont Region
Virginia DOT
New York State DOT
Indiana DOTOmaha, Nebraska
Cedar Rapids, IAIowa DOT
Maricopa, AZPima, AZ
California DOT
Wisconsin DOT
Tennessee DOT
Texas DOT
South Dakota DOT
Vermont DOT
NHTS – Add On
Survey Design - New for 2008
Allows for valid statewide data--minimum sample (n=250)
Cell Phone only sample Customizable content for Add-On
participants New data items for national study
New 2008 NHTS Content
Congestion Interstate use and tolling Telecommuting – opportunity and frequency Work arrival time and flexibility
Safety Safe Travel to School Travel impacts of disability
Energy and Environment Shopping by Internet and deliveries to the household Hybrid/Alternative fuel vehicles Fuel costs by vehicle type and travel behavior Vehicle age, odometer reading, and annual mileage
Alternative Modes Access (to transit) travel party size Frequency of walk and bike Motorcycle ownership and use
April 2009 - Data collection completed June 2009 - Final unweighted data for QA August 2009 - Add-On GIS files August 2009 – Draft final weighted file for QA October 2009 – Final weighted data and
documentation Add-Ons receive final data
January 2009 – Public use data set On-line analysis tool available for 2008
March 2009 – Final full documentation and users guide
2008 NHTS Schedule
NHTS Products
• Policy Briefs: http://ornl.gov/publications.shtml#issueBriefs
• Trends Database: To be posted soon
• Transferable data for trip generation
– http://fmip.ornl.gov/nhts/
• Risk Assessment Tool:
– http://www.aaafoundation.org/trafficSTATS/
• On-line Analysis Tool: http://nhts.ornl.gov
– SAS Data Set: http://nhts.ornl.gov/download.shtml
http://nhts.ornl.gov
Local Employment Dynamics (LED)
Local Employment Household Dynamics (LEHD)
On The Map
http://lehd.did.census.gov
http://lehdmap3.did.census.gov/themap3/
• Local Employment Dynamics (LED)– Federal-State Partnership– Based on Administrative Records
• State UI Wage Records• Quarterly Census of Employment and Wages
– Database Updated Quarterly– Ongoing QA/QC and Data Improvement
What is LED?
StatePartners
UI Wage Records&
QCEW
U.S. CensusBureau
Censuses&
Surveys
Local Employment Dynamics (LED)
QWI Online OnTheMap Free!
Online24/7
The LED Partnership
• A Dataset… – Origin-Destination Data– Census’ first partially synthetic dataset– Public-use data at the Census block level– Worker characteristic data:
• Age, Earnings, Industry
What is OnTheMap?
• and a Tool.– Online, free, 24/7, interactive– Mapping complex data for those without GIS
knowledge or resources– Allows sophisticated queries based upon
standard Census geography…
…Or from arbitrary block-based areas.
What is OnTheMap?
• Start with LED data infrastructure• Employment information based upon
Quarterly Workforce Indicators (QWI)• Residential information and origin-
destination relationships synthesized– From PCF, 2000 Decennial Census, ACS, and
StARS as well as SIPP and CPS– CTPP informs the prior
How is the Data Constructed?
• QWI and OnTheMap workplace data protected by dynamically consistent noise infusion applied at the establishment level– Ramp distribution with a hole in the middle
• OnTheMap residence, origin/destination, and QWI-suppressed workplace employment are protected by synthetic data– Multinomial/Dirichlet PPD
Add noise and protections
• OnTheMap Application
• Download from VirtualRDC– Hosted by Cornell University– Same data as in the application– Block based– Multiple labor segments
How to Access the Data?
21
LED Partnership
2222
LED Products
• LED Partnership/LEHD Program– Jeremy Wu, LEHD Program Manager
– http://lehd.did.census.gov– [email protected]
• QWI Online– http://lehd.did.census.gov/led/datatools/qwiapp.html
• OnTheMap– http://lehdmap3.did.census.gov/themap3/
Links/Contacts
Replacement of the Long Form
Continuous Survey Methodology
Conducted Monthly
Produces characteristics, not population counts
http://www.census.gov/acs/www/
What is the American Community Survey
250,000 Households sampled per month
About 1 in 40 Households sampled per year
Same transportation questions as 2000 Long Form
Decennial Long Form is HistoryKaput, Nada, Defunct, Gone!
ACS Facts
How does the ACS work?
Three Methods of Data Collection
1. Mail Self-administered mail-out/mail-back
2. Telephone Computer Assisted Telephone Interviewing (CATI)
3. Personal VisitsComputer AssistedPersonalInterviewing(CAPI) 1:3
ACS Standard Tables
Standard Tabs include some “New” tables previously only in CTPP, eg place of work
- Mode to work by travel time
- Mode to work by time leaving home
- Household size by # of vehicles
- Household size by # of workers
Some of what the ACS provides
http://factfinder.census.gov/
Tract and Block Group
5-year Period
20,000+3-year Period
65,000+Annual
Data for the Previous Year Released in:
2006 2007 2008 2009 2010 2011 2012+Population
Size of AreaDataType
ACS Data Release Timeline
Is it 1 or 3 or 5?
Population < 20,0005-year estimates only
Population >= 20,000 and < 65,0003-year estimates5-year estimates
Population >= 65,0001-year estimates3-year estimates5-year estimates
Users will have to choose which data to use
What does this mean?
Annual
> 65K
3-Year
>20K
5-Year
State
County
Place
PUMA
State
County
Place
PUMA
UA
State
County
Place
PUMA
Tract
Block Group
Geography simplified
Percent of Population 5 Years and Older who Speak Spanish at Home - Lake County, IL
Reliability vs Currency
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
There are RESOURCES AVAILABLE
Report 588 A Guidebook for Using ACS Data forTransportation Planning
275 pages
ACS for Transportation
Trend Analysis
How to recalculate Margins of Error
(MOEs)
http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_rpt_588.pdf
Training and Technical Assistance
1960 OMB Journey-to-Work Tables
1970 and 1980 Urban Transportation Planning Package (UTPP)
1990 and 2000 Census Transportation Planning Package (CTPP)
At ResidenceAt Workplace
Flows between Home and Work
Census Transportation Planning Products
Past Journey to Work data
Buyers/Users Direct Cost Tables
1960 OMB ??? ???
1970 112 $0.6 M 43
1980 152 $2.0 M 82
1990 $2.5 M 120
2000 $3.0 M 203
2005 + AASHTO Consolidated Purchase $5.9 Million
All States and MPOs
2000 BTS Product Distribution Center
1990 and 2000 BTS TranStats
1980 Try the MPO
1970 Try the MPO
1960 Good Luck
http://www.transtats.bts.gov/
Where do you get the data
https://www.bts.gov/pdc/
Call a
Friend
Census Transportation
Planning Products
The CTPP embodies a collection of Census Data used for Transportation Planning. With changing data needs and the ACS, there will be a variety of different products useful for transportation planning emanating from Census Data. There will be Special Tabulations, Standard Tables and even Value Added-products. The CTPP captures all of these.
Think of CTPP as a place to look for Census Data products to help with your Transportation needs
Enter the ACS era…
All States + DC
AASHTO Led
Oversight Board
Five Year period ~ 2011
The NEW CTPP program
Federal Technical Advisory GroupTRB Subcommittee -- List Serve (700 strong)Quarterly Newsletter -- OutreachSeveral Websites
Penelope WeinbergerCTPP Program Manager, AASHTO444 North Capitol Street NE Suite 249Washington, DC [email protected]://ctpp.transportation.org
Staff Additions
Melissa ChiuCTPP Program ManagerCensus Bureau301-763-2421 or (2454)[email protected]
Census Data Tabulations
April 1, ‘09 New 3-year Table Request Submitted
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
(Extraction Software)
State
3-year Product Detail
Submittal Letterhttp://trbcensus.com/aashto/docs/CTPP_3-year_table_request.pdf
Table Detailhttp://trbcensus.com/aashto/docs/CTPPtables-09apr01-1.xls
1. Collapsed Mode to Work
2. Reduced Mode to Work Crosstabs to 5 variables
3. Increased Flows by Mode from 8 to 11 modes
http://www.dot.gov/ctppAlso at
Collapsing Schema
“Too many” cross-tabulations byMeans of Transportation (Mode)
• Age• Sex• Class of Worker• Disability status• Earnings• Household Income• Poverty status • Industry• Occupation
• Length of U.S. residence• Minority Status (Y/N)• Time Leaving Home• Time Arriving (Part 2)• Travel Time• Vehicle Availability• Workers in Household• Age of Youngest Child
…makes for micro data record
Modal Crosstabs
5-year Data Product
5-year Data Product
Likely to be all synthetic
Hinges on some key research
NCHRP Project 8-79 ($500K)Identifying Credible Alternatives for Producing 5-year CTPP Data Products from the ACS
http://trbcensus.com/notes/NCHRP_CTPP_Data_Proposal_Oct2008.pdf
Will there be Traffic Analysis Zones?
http://trbcensus.com/notes/ACSTAZs.pdf
• Developed in late 2008 and early 2009 Summer 2011
•All zones would nest within each larger zones and Counties
•GIS approach similar to (PSAP) equivalency process
•Funded under Consolidated Purchase
But why
the
Change?
http://ctpp.transportation.org
AASHTO Website
http://trbcensus.com
CTPP List Serve
Status Report
http://www.fhwa.dot.gov/ctpp/status.htm
http://www.trbcensus.com/newsletters.html
The 3-year Product
http://www.trbcensus.com/aashto/index.html
Trend Data 2000 and 3-year ACS
Includes MOEs and significance tests
Keys on Transportation Variables
New Profiles
Summer 2009
Coming Soon
Research Efforts
Report 588 Using ACS forTransportation Planning (9/06)
08-36(63) Making NAICS Workfor Transportation (March 2007)
08-36(71) Disclosure Avoidance Techniques to Improve ACS Data Availability (5/09)
8-36(81) Enhancing the ACS as a Source for Home-to-Work Flows (10/09)
www.trb.org/CRP/NCHRP/NCHRPProjects.asp?AreaID=8
Workplace Allocation-- Research and Implementation ($250K)
Imputation of Vehicle Ownership and Means of Transportation (Done)
NCHRP Project 8-79 ($500K)
Identifying Credible Alternatives for Producing 5-year CTPP Data Products from the ACS
Research Efforts
Ed Christopher708-283-3534
http://www.dot.gov/ctpp
http://www.TRBcensus.com
202-366-5000