Census Transportation Planning Products program What is ... · CTPP - - Just the Basics Census Transportation Planning Products program What is the CTPP? Background Organizational

CTPP - - Just the Basics

Census Transportation

Planning Products

program

What is the CTPP?

Background

Organizational

Structure

Products

Special Tabs

Resources

CTPP is an umbrella program of

1. Data Products

2. Custom Data Tabulations

3. Training

4. Technical Assistance

5. Research

for the transportation community

CTPPs main focus is on data from U.S.

Census Bureau and the American

Community Survey (ACS)

Census Transportation Planning Products

What is the CTPP

ACS grew out of the Long Form

1940 Sampling (Long

Form) First Used

All HH Occupants

Congressionally Mandated

Questions

Questions Change

Overtime

2000 was the LAST

Decennial Long Form

17% Sample of Households (1 in 6)

~ 12 pages

Monthly Mortgage Real Estate Taxes Indoor Plumbing

Income

Occupation

Educational Level

Household age

Number of Rooms

• Continuous Survey Methodology

• 300,000 Households sampled per month

• About 1 in 40 Households sampled per year

• Produces annual and multi-year estimates of the characteristics of the population and housing

• Same transportation questions as long form

ACS Facts

Once Data is collected

Three basic Data Products

1. Annual estimates (places over 65K pop)

2. 3-year estimates (places over 20K pop)

3. 5-year estimates (all places including tracts,

block groups)

Period Estimates

Place of Work

Means of Transportation to Work

Carpool Occupancy to Work

Departure Time for Work

Travel Time to Work

Vehicles Available

B

B

CTPP Keys in on Transportation Data

CTPP Concepts

Summarized data by

Place of Residence

Place of Work

Flows between Home and Work

Custom Geography (Local TAZs)

Unique Universes (e.g. workers in HHs)

Designed and paid for by transportation

planners for transportation planners

l All States + DC

l AASHTO Led

l Oversight Board

l Five Year period

~ 2013

AASHTO CTPP Program

Federal Technical Advisory Group

TRB Subcommittee -- List Serve

Quarterly Newsletter -- Outreach

Several Websites

Acquire Data and

Develop Products 53%

Research, Training

and Outreach 39%

Manage Program 5%

Board Discretion 3%

TOTAL $5,844,332

9

States

Laine Heltebridle, PA (Region I)

Greg Slater, MD (Region I)

Hui Wei Shen, FL (Region II)

Juyin Chen, VA (Region II)

Phillip Mescher, IA (Region III)

Cory Pope, UT (Region IV)

Ayalew Adamu, CA (Region IV)

MPOs

Kristen Rohanna, SANDAG

Brian Lasagna, BCAG

Mell Henderson, MARC

Arash Mirzaei, NCTCOG

Guy Rousseau, ARC

Clara Reschovsky, MWCOG

Bill Schaeffer, MATPB

MaryAnn Waldinger, COMPASS Ex Officio Members Ken Cervenka, FTA

Ed Christopher, FHWA

Rich Denbow, AMPO

Alison Fields, Census Bureau

Matt Hardy, AASHTO

Jonette Kreideweis, Consultant

Brian McKenzie, Census Bureau

Elaine Murakami, FHWA

Janet Oakley, AASHTO

Alan Pisarski, Consultant

Steven Polzin, USF. CUTR

Melanie Rapino, Census

Nanda Srinivasan, TRB

Erika Young NARC

Liang Long, Technical Adjunct

Chair: Jennifer Toth, AZ (Region IV)

Vice Chair: Susan Gorski , MI (Region III)

AASHTO Liaison: Penelope Weinberger

17 voting members: 9 states and 8 MPOs

Consensus Decision Making

AASHTO CTPP Oversight Board (ACOB)

CTPP Data Products

Data Profiles

3-year ACS Tables

5-year ACS Tables

Current Products

What are they?

2000 Profiles (1990 and 2000 Long Form data)

2005 Profiles (1990, 2000 and 2005 ACS1)

2007 Profiles (2000 and 2007 ACS3)

2010 Profiles (2000 and 2010 ACS5) coming soon

l Data Summaries

l Focus on Transportation

Variables

l Resident and Workplace data

l Includes Significance Tests

l And MOEs for 2000 Data

l Various Geographies

2000 Profiles

States and all counties

2005 Profiles (2005 ACS1)

States, Large Cities (over 65K), MSAs and

CSAs, PUMAs for some tables

2007 Profiles (2007 ACS3)

States, Counties and Places (over 20K)

2010 Profiles (2010 ACS5)

States, Counties and Places (over 5K)

Workplace Residence

Includes

What Areas do the Profiles include?

Where do I find the Profiles?

http://ctpp.transportation.org

Finding CTPP Profiles

http://download.ctpp.transportation.org/profiles_2005-2007/ctpp_profiles.html

3-year CTPP Data Product (2008 CTPP3)

CTPP 3-Year

January 2011

2006, 2007, 2008

20,000 Pop. Areas

(County, Place, PUMAs)

Actual Flows

http://ctpp.transportation.org/Pages/3yrdas.aspx

(2008 CTPP3) Product Design

2008 Geography

MSA – EACH Principal City

Metropolitan Statistical Area

State-POW PUMA

State-PUMA (red = 2000 geo.)

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

On-Line Data Retrieval

Extraction Software ~ Raw Data Download

State

http://ctpp.transportation.org/Documents/CTPP_custom_tabulations_based_on_3yracs2006_2008.xls

(2008 CTPP3) Product Summary

Highlights Low Lights Based 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

Rounded

Reduced 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

Large MOEs (@ 90%)

18

Requires Disclosure Proofing

5-year CTPP Data Product (2010 CTPP5)

• Cell Means and

aggregates require 3

unweighted records

The are disclosure rules

• For Pt 3 Flow Tables:

3 unweighted records

for each table, each cell, with the exception

of the 1-way Means of Trans. table

• 3 unweighted records for the marginal's in

any cross-tabulation with Means of Trans.

Disclosure Rules Eliminated

NCHRP 08-79 ($550K)

Producing Transportation Data Products from

the ACS that Comply With Disclosure Rules

NCHRP is funded by State DOTs SP&R

Project schedule: August 2011

Process applied to 2006-2010 5-year CTPP ACS Product

Westat, Tom Krenzke, PI

http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_w180.pdf

8-79 Summary using 3-year Table list

Means of transportation Aggregate Vehicles Used

Aggregate Travel Time Mean HH Income

Aggregate HH Income Aggregate Carpools

Almost all Part 3 Tables

Tables Using Perturbed Data Set

● Asymmetrical Flows (in red)

● Small Areas defined by MPOs in MPO areas and States Elsewhere

● Tracts are Defaults for Small Areas

● Default TADs by AASHTO

5-year Geography and Flows

23

Table Request Process

CTPP Oversight Board and others Identified

Tables (Summer 2011)

AASHTO sent request to CB (Sept 2011)

CB reviews and responds with a price and

conditions (May 2012)

Contract signed

Production Begins

Tables submitted to AASHTO

Packaging Begins (June 2013)

Users get data (Summer 2013)

Resources

Penelope Weinberger CTPP Program Manager, AASHTO 444 North Capitol Street NE Suite 249

Washington, DC 20001

202-624-3556

[email protected]

http://ctpp.transportation.org

Special Staff and Contacts

Brian McKenzie CTPP Program Manager

Census Bureau

301-763-2454

[email protected]

Liang Long CTPP Technical Support

FHWA

202-366-6971

[email protected]

CTPP List Serve

http://trbcensus.com

“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/

Developing 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

Exercise 1- - ACS Questionnaire

2011 Questionnaire http://www.census.gov/acs/www/Downloads/questionnaires/2011/Quest11.pdf

2011 Questionnaire Instructions http://www.census.gov/acs/www/Downloads/questionnaires/2011/Guide11.pdf

http://www.census.gov/acs/www/methodology/methodology_main/

Visit the Survey Methodology main page

Summary of

Questionnaire Changes

1996 to 2009

Group Quarters

Other Years

Puerto Rico

Sample Size

and

Data Quality

Getting Ready to work with CTPP Data

Remember -- CTPP Data products

have 3 parts

and many Universes

Exercise 2- - Finding the Right Table

Exercise 2

In this exercise you will begin to understand

Tables, Universes and Parts in CTPP Data

Products. When working with CTPP data knowing

which table to use makes your work so much

easier. For this exercise you will need to use the

list of CTPP tables distributed in class. Please

complete the questionnaire identifying which

Part, Universe and Table you would need

Exercise 2- - Finding the Right Table

Exercise 2- - Finding the Right Table

Exercise 2

Exercise 2

Exercise 3- Logging on to CTPP Data

http://ctpp.transportation.org/Pages/3yrdas.aspx

Exercise 3- You have to register

http://data.ctpp.transportation.org/CTPP/

Exercise 4- Create your own data profile

In this Exercise you will take

everything you learned and

apply it to find some general

characteristics of a single

area. It can be any city or

county you want, but it must

be one that has 3-year ACS

data (i.e. more than 20K

residents). For this exercise

you should limit your data

search to using only 3-year

CTPP data.

Exercise 4- Helper

Miscellaneous Material

https://connectdot.connectsolutions.com/p22twaxszhi/

Webinar on Deep Linking with Handouts

ftp://ftp2.census.gov/geo/tiger/TIGER2010/TAZ/2010/

ftp://ftp2.census.gov/geo/tiger/TIGER2010/TAD/

Tiger Files with TAZs and TADs

For TAZs the file name is name will be

tl_2011_XX_taz10.zip (where XX= State FIPS)