ctpp-news February 2007

ctpp-news@mailman.chrispy.net

5 participants
16 discussions

Second try: Year of Entry and Start thinking about next CTPP Table design

by Murakami, Elaine

I had an interesting discussion with Alan Pisarski yesterday and wanted to share some of it with everyone. Alan, along with other researchers including Dowell Myers at USC, and Evelyn Blumenburg at UCLA, have examined how time since immigration influences transit mode choice and vehicle acquisition. First, let's remember that there are "standard" tables that the Census Bureau produces, and there are "custom" tables done on commission. The 1990 and 2000 CTPP are "custom" tabulations. The "standard" tabulations come out BEFORE any "custom" products. The questions on the ACS form are: 8. Is this person a CITIZEN of the United States? 9. When did this person come to live in the United States? Year _______ The current ACS standard products, such as profile S0502 use the specific year in the table: Entered 2000 or later Entered 1990 to 1999 Entered before 1990 While this approach can be useful for cohort analysis, it is less useful for understanding mode choice by time spent in the U.S. For the CTPP2000, we had the Census Bureau create a variable called "Length of U.S. residence." The CTPP 2000 includes Table1-020 Length of U.S. residence by Means of Transportation to Work. One way to think about this is to consider "year of birth" and the variable "age." If a person is born in 1960, and is surveyed in 2005, their age is tabulated as 45. If they are surveyed in 2010, their age is tabulated as 50. If the tabulation was by "year of birth" they would always show up in the category "1960." Alan wants to make sure he gets the equivalent of CTPP2000 Table 1-020 with the ACS tabulations, and have it reported for metropolitan areas, and aggregated by metro areas by population size. So, this is an opportunity for me to bring up the topic of TABLE DESIGN for the next CTPP! We plan for the first product of the next CTPP to use the first three years of ACS data (2005/2006/2007). The tabulation will be limited to geographic units with population over 20,000. Also, Phil Salopek has already submitted a list of tables to be deleted from the ACS standard set. This includes profile S0803, and tables of travel time by marital status, travel time by educational attainment, and travel time by household type. He also had travel time by race and ethnicity on the list for deletions, but I asked if he could retain them as they are useful for projects on environmental justice. IF THERE ARE SPECIFIC TABLES (particularly those related to journey to work and vehicle availability) that you MUST have as part of the ACS "standard" set, please let me know ASAP, so that we can convey this to the CB. If there are tables that you especially want for the first CTPP product, please convey those ideas as well. On MY list for the first CTPP product are: County-to-County flow tabulation (total, and by means of transportation to work) PUMA-to-PUMA flow tabulation (total and by means of transportation to work) However, for flow tabulations from ACS, we need to make sure that the workplace allocation program is in place to assign detailed workplace geocoding to respondents who do not supply sufficient information on their ACS form. Finally, for those of you who do not already know, Phil Salopek will be retiring from the U.S. Census Bureau on March 2. He has been a great help to all of us in the transportation data community and we wish him well in his new endeavors, and we hope that he will find a way to continue to work with us! On behalf of the CTPP Team: Elaine Murakami 206-220-4460

19 years

"Year of Entry" tabulation in ACS

by Murakami, Elaine

19 years

Re: [CTPP] CENSUS

by Ed Christopher

Dan, I am responding to the whole list because of the importance of your question. The very short answer is no, but.... There always is a but. In terms of specific work it is looking like TAZ development will not take place until late summer/fall 2008. Coming just before TAZ development will be a Census program to redifine Tracts and Block Groups. The organizational and technical processes for defining these geographies will be different. Regarding the organizational process ie who developes the boundaries, the Census Bureau is overhauling the old arrangements. They will be calling for broader participation of regional and local agencies, and FHWA will be encouraging the MPOs and state DOTs to be engaged in the process. This has been done to varying degrees in the past. The CB is also developing a software approach which I would like to think we in CTPP land helped pioneer with our 2000 TAZ-UP software. Before I get to far ahead of myself, the point is that it would be wise to plan on some staff time through out calendar 2007 for staying plugged in and preparing for what is to come. Having budgeted some staff time will also allow time for looking and learing how to work with ACS data. This is becoming ever so more important with data being released every year. However, in the middle to the end of 2008 the bulk of more techincal work in terms of TAZ (and other geography) deffinition will be upon us. Also, remember that the first 3-year data (tables for areas with more that 20,000 people) will begin coming out in August 2008. Next year, August of 2007, you will still have the tables for areas over 65,000 people like you did this year. Another consideration is the AASHTO CTPP pooled fund. ASHTO is just now finishing up on getting all the committment letters for the states so that the planning work, research, training materials and the devleoplment of customized data products can start moving in preperation and onset of ACS data and activities. Regarding the pooled fund (or consolidated purchase as some call it) in some states the state DOT might be requesting the MPOs to pick up a share of the cost. This would have to be bugeted for ASAP. So far, I only know of only one state that might be doing this, California. Indiana has already signed the commitment letter and is on board. For more infoation on the poled fund and what each state has been asked to pony up see http://www.TRBcensus.com/SCOP/docs/pooled_fund/pooled-fund.pdf. For even more detail on the consolidated purchase se http://www.TRBcensus.com/SCOP/ you will find more detail on the pooled fund. Let me stop here in case I raised more questions that people want to ask and before I confuse the matter. Dan Avery wrote: > > Ed, > Are there any activities that MPO's should be including > in their UPWPs regarding assistance to the Census > Bureau in FY 08 (July 2007 to June 2008)? In the past > we have assisted with address files, journey to work > info, tract and block group boundaries, etc. and we are > often caught in mid-year without appropriate funding > identified in our UPWP. Do you know what activities may > be planned for this time period? Thanks for any > assistance and information. > > Dan Avery > Co-Chair Indiana MPO Council > > Dan Avery > Executive Director, NIRCC > 260.449.7309 > fax 260.449.7682 > dan.avery(a)co.allen.in.us -- Ed Christopher 708-283-3534 (V) 708-574-8131 (cell) FHWA RC-TST-PLN 19900 Governors Dr Olympia Fields, IL 60461

19 years

CENSUS NEWS FLASH

by Ed Christopher

Good morning, census stakeholders. Brief update on Census Bureau funding for Fiscal Year 2007.Thanks, Terri AnnTerri Ann Lowenthal Legislative & Policy Consultant 1250 4th St., SW Apt. W615 Washington, DC 20024 (tel.) 202-484-3067 TerriAnn2K(a)aol.com ***************************

19 years

Census News Brief

by Ed Christopher

Hello, census stakeholders. Attached please find the latest Census News Brief, with information on the President's 2008 budget request for the Census Bureau and other issues related to the 2010 census. Thanks for your continued interest. Happy Valentine's Day! Terri Ann Terri Ann Lowenthal Legislative & Policy Consultant 1250 4th St., SW Apt. W615 Washington, DC 20024 (tel.) 202-484-3067 TerriAnn2K(a)aol.com ***************************

19 years

MORE Transportation Profiles using the 2005 ACS

by Murakami, Elaine

The AASHTO webpage on CTPP Profiles has been updated. http://ctpp.transportation.org/2005.htm There are 3 different sets, the second and third sets are the "new" ones, and are based on the October 2006 release of 2005 ACS data. The same cautions about interpreting the results from ACS, compared to decennial Census remain the same. http://ctpp.transportation.org/production/notes/notes.htm -The first set is by Place of Residence. (We posted these several months ago). Probably, we will need to go back and add more geography to this set. -The second set is also by Place of Residence and tabulates WORKERS and HOUSEHOLDS by household characteristics such as HOUSEHOLD SIZE and VEHICLE AVAILABILITY. -The third set is by Place of Work. We do not have "metropolitan areas" here, since the results are going to be nearly the same as for Place of Residence. However, we included "State" totals, even if they are also going to look very similar to Place of Residence tabulations (except Washington, D.C.) These are "DRAFT" and we plan to add more information about Margins of Error (in NUMBERS), where it currently is limited to MOE in percent. These profiles will be posted as FHWA 508-compliant HTML in the near future. I haven't found the time to finish a "highlights" document similar to the one I did for the first set of profiles. Also, we have added several links to our ACS page, including links to web-based training. A good starting point for learning about using American FactFinder to access ACS data, please see the Ken Bryson archived webinar. http://www.fhwa.dot.gov/planning/census/acs.htm Nanda Srinivasan (now on vacation until March 2) did the hard work in producing these profile sheets. On behalf of the CTPP Team: Elaine Murakami FHWA Office of Planning 206-220-4460

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ctpp-news February 2007