Paul Mission will be out of the office starting June 27 and will return on July 8, 2008. If you need immediate assistance, please contact the office manager at SRPEDD. (508) 824-1367 info(a)srpedd.org.
Paul Mission will be out of the office starting June 27 and will return on July 8, 2008. If you need immediate assistance, please contact the office manager at SRPEDD. (508) 824-1367 info(a)srpedd.org.
Paul Mission will be out of the office starting June 27 and will return on July 8, 2008. If you need immediate assistance, please contact the office manager at SRPEDD. (508) 824-1367 info(a)srpedd.org.
Paul Mission will be out of the office starting June 27 and will return on July 8, 2008. If you need immediate assistance, please contact the office manager at SRPEDD. (508) 824-1367 info(a)srpedd.org.
Larry--Yes, when we creat 20,000 and 65,000 TAZs our goal is to get
tablulations for these areas. Or course the DRB would have to approve
any tables. The current problem with the ACS 1 and 3-year data (due out
at the end of the year) that the Census releases is that your data
coverage in like swiss cheese. You get data for some areas and not
others. Our plan is to have complete coverage to eliminate this problem
with any tables paid for with CTPP dollars. Who knows maybe we can get
the Census Bureau to see the light and adopt the concept of having zonal
coverage consistent with the data release thresholds for their data
products as well.
Larry Mugler wrote:
>
> If we create "super" tazs with populations of 20,000 and/or 65,000,
> would we be able to get tabulations for such areas?
>
> Larry G. Mugler, AICP - Planning Services Manager
> 303-480-6759 - Customer Resource and Support
> Denver Regional Council of Governments
>
> -----Original Message-----
> From: ctpp-news-bounces(a)chrispy.net
> [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Murakami, Elaine
> Sent: Wednesday, June 11, 2008 12:43 PM
> To: ctpp-news(a)chrispy.net
> Subject: RE: [CTPP] CTPP Update
>
> Re: poverty and Income comparisons between Census 2000 Long Form and
> ACS:
> The only report I am familiar with is:
> http://www.census.gov/acs/www/Downloads/Report05.pdf
> Pages 34-37 discuss county-level comparisons. These are comparisons
> between the Census 2000 Long Form (aka sample) and the ACS "C2SS", and
> 18 of the test ACS counties. They found that the C2SS results
> consistently had lower incomes than the Census 2000 sample, and
> therefore, a higher poverty ratio. They found that income allocation
> occurs 30 percent in the Census 2000 sample, and 24% in the C2SS.
>
> I do not know if the Census Bureau has pursued other research on how ACS
> respondents answer the income questions.
>
> Elaine
>
> -----Original Message-----
> From: ctpp-news-bounces(a)chrispy.net
> [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Ed Christopher
> Sent: Wednesday, June 11, 2008 9:50 AM
> To: ctpp-news maillist
> Subject: [CTPP] CTPP Update
>
> On May 21 and June 4 members of the CTPP team conducted a series of
> webinars to help bring our community up-to-speed on several of the CTPP
> activities. The slides from these presentations can be downloaded from
> our webinar room at http://fhwa.acrobat.com/ctpp1 (enter as a guest) and
> the responses to many of the questions asked during the meetings are
> presented below. If folks have additional questions please feel free to
> post them to the list serve and someone on the CTPP team will attempt to
> answer them.
>
> CTPP Webinar - Questions and Answers
>
> Question: Will the 3-year CTPP data product based on ACS include tables
> by race and household income?
> Response: Yes but the best source for information on race will still be
> the Census Bureau's standard ACS tabulations found on American
> FactFinder (http://factfinder.census.gov/). The 3-year CTPP proposed
> tables for parts 1 and 2 include a few tables with the variable
> "minority status." Also, there are various tables with the variables -
> Income, Poverty Status and Worker Earnings that will be available.
> Please note that Poverty Status is a calculated variable based on
> household income, family size, number of children and number of family
> members over the age of 65.
>
> Question: Since the new CTPP products will be based on data collected
> over 3 years (or 5 years), to which year will the income be adjusted?
> Response: Income will be adjusted to the last year of the survey
> period. For the first 3-year product all incomes will adjusted to
> 2007.
>
> Question: Is there data available on zero car households? If yes, what
> geography level is it available?
> Response: Yes, there will be information available for zero car
> households in both the 3-year CTPP data product and as part of the
> standard Census products. The data will be available for geographic
> areas greater than 20,000 residents.
>
> Question: Slides 6 & 7 of the DRB presentation show different
> percentages of data lost due to DRB rules, why is that?
> Response: Slide 6 showed the number of workers lost while slide 7
> showed the number of origin-destination pairs lost. The point is that
> when thresholds were applied to CTPP Part 3 data as was the case with
> the 2000 data, many folks looked at the loss of workers as being
> significant but more surprising was actual loss of individual O-D
> pairs. All in all table thresholds devastated the part 3 flow data.
>
> Question: 2005 ACS data doesn't have information on Group Quarters, but
> the 2006 and 2007 do. How is this being handled in the 3-year 2007 ACS
> products?
> Response: The Group Quarter data available for 2 years (2006 and 2007)
> will be reweighed to account for the missing year.
>
> Question: Will the variable - Means of Transportation to Work have walk
> and bike modes combined? Also, what about taxi, bus and other?
> Response: Regarding the 3-year CTPP data product there are multiple
> category lists for the variable - Means of Transportation to Work.
> There are a few tables all 17 modes plus the total are shown separately
> but then there are many others where walk and bike have been collapsed
> together. A great deal of the detail on the mode variable is in the
> hands of the Census Bureau's disclosure Review Board. Currently they
> have proposed some very tight restrictions on the proposed 3-year CTPP
> tables. Please see http://trbcensus.com/drb/ for more
>
> Question: Do you have anything on the TAZ definition timeframe that you
> can share with the group?
> Response: Please see our Status Report newsletter for the latest
> http://www.TRBcensus.com/newsltr/sr052008.pdf.
>
> Question: Can you talk about the difference in income between ACS and
> Long Form?
> Response: In Census 2000, the question was asked during April for the
> previous year, 1999. Because April is so close to IRS annual return
> data it was felt that "good" income data was being collected because it
> was fresh in people's minds. However, for the ACS the same questions
> are asked, but the respondent could be getting the survey during any
> month of year (depending on when she/he received the form). This
> reported income is then adjusted to the current year (year of
> tabulation) based on CPI. There are several issues with this with the
> largest being that at anytime during the year most people do not how
> much money they made in the last 12 months. Needless to say the income
> question is messy.
>
> Question: Poverty rates seem discontinuous, higher. Any ideas why?
> Response: Yes, they are discontinuous. Hopefully they will look better
> with the 3-year ACS data products.
>
> Question: If the DRB is so strict with its rules then why bother with
> new TAZs?
> Response: We hope that the DRB will relax its rules but having TAZs
> that correspond to the ACS data release products (65,000 pop TAZs,
> 20,000 pop TAZs and small TAZs) will help us in the future all sorts of
> data products. Having geography match the data release seems to make
> good sense so that we can at least get complete coverage (wall-to-wall)
> within a region.
>
> Question: What are the implications of rising fuel prices on travel
> choices on mode to work? Has anybody thought about it, especially with
> aggregating 3 years worth of data? Since the ACS asks about "usual"
> mode, it could still miss modes used only part of the time.
> Response: The 3 year ACS trend data might look a lot different than the
> 2000 data. This might be a good research question.
>
> Question: Is the category list for the variable - occupation being
> consolidated?
> Response: No, DRB has not asked us to collapse the variables - industry
> or occupation.
>
> Question: Is anybody planning to write to Congress about the DRB issue?
> Response: AASHTO SCOP is sending a letter to the Census Bureau to appeal
> the DRB decision. As FHWA staff, we cannot contact Congress directly
> but we know that many regional agencies do talk with their Congressional
> delegations. It is somewhat ironic but many of the congressionally
> mandated analysis like the FTA New Starts program and environmental
> justice analysis all need data at a smaller geography level which will
> be difficult to obtain with the DRB's current rules.
> Question: We are relatively a new MPO and I have a CTPP 101 question.
> As an MPO do we need to provide you any information, and what are our
> sources of information regarding CTPP specifically regarding TAZs?
> Response: The CTPP listserve is a good place for information regarding
> ongoing CTPP related activities. The TAZ definition process is planned
> for March/April of 2009 and it is recommended that MPO's allocate some
> budget when preparing their work plans for FY 2009, especially for new
> MPOs. The CTPP Status Report is also a good source of information. If
> you have any particular questions please do not hesitate to contact
> anyone one of us on the CTPP team.
>
> Question: Somewhere it was noted the first CTPP ACS product would be
> available in 2009 for areas of 20,000 or more for places and counties.
> Response: Yes that is correct. We are still in the negotiation stage
> regarding some DRB issues but this is our GOAL. This first CTPP product
> would use 3 years of ACS
> data.
>
> Question: There was also a mention of TAZ level data also for 20,000
> population threshold. However, I am not sure if this is included in the
> first 3 year product for 2009, or whether the first TAZ level report
> will not be available until 2012 with a 5 year product.
> Response: To get "small" area geography like a TAZ or a census tract,
> the census requires 5 years of ACS data. So, we are planning to wait for
> 2006 thru 2010 ACS data to incorporate 2010 Census geography and
> weights, which we hope would be tabulated by 2012. This will likely
> require some data synthesis before release. Because of the probability
> that the data will be synthetic, we do not anticipate any population
> threshold.
>
> --
> Ed Christopher
> Resource Center Planning Team
> Federal Highway Administration
> 19900 Governors Drive
> Olympia Fields, Illinois 60461
> 708-283-3534 (V) 708-574-8131 (cell)
> 708-283-3501 (F)
>
> _______________________________________________
> ctpp-news mailing list
> ctpp-news(a)chrispy.net
> http://www.chrispy.net/mailman/listinfo/ctpp-news
>
> _______________________________________________
> ctpp-news mailing list
> ctpp-news(a)chrispy.net
> http://www.chrispy.net/mailman/listinfo/ctpp-news
>
> _______________________________________________
> ctpp-news mailing list
> ctpp-news(a)chrispy.net
> http://www.chrispy.net/mailman/listinfo/ctpp-news
--
Ed Christopher
Resource Center Planning Team
Federal Highway Administration
19900 Governors Drive
Olympia Fields, Illinois 60461
708-283-3534 (V) 708-574-8131 (cell)
708-283-3501 (F)
Hold on, all - aren't we living in a time where "everyone and their little
brother" has a GIS? Nothing either existing now or proposed for the
future CTPP is going to prevent anyone from developing zones at whatever
level of geographic focus needed. You can use Census blocks or something
even smaller if you want and you're all set to geocode population,
housing, local data coded to street addresses and probably detailed
employment data (depending on the source you use). The only thing you
won't have at that level of geography is all the info from what the Census
used to call the "long form" that you'll just have to allocate down from
higher levels of geography like the county. (Which we all should have
been doing all along anyway given the high percentage of either missing or
inconsistent answers provided on these longer surveys.)
Sam Granato
Ohio DOT, Office of Technical Services
1980 W. Broad Street, Columbus, OH 43223
Phone: 614-644-6796, Fax: 614-752-8646
"Platitude: an idea that a) is admitted to be true by everyone, and b) is
not true." - H. L. Mencken
>From a small (~135,000 pop) MPO perspective, the implications of these
super-TAZs for travel demand modeling are devastating. If 65K, we would
have two TAZs; if 20K, we would have six or seven. Fortunately, we are
also an attainment area and are not mandated to do modeling at all;
however a new TMA with population of 200,000 would be so mandated and
would have a total of three or 10, respectively, so it would become
virtually impossible to do modeling for AQ conformity.
The four MPOs (howdy, Larry) along the Front Range are trying to develop
an integrated model for a population of ~3.5 million, so at 65K would
have only 54 TAZs, or at 20K only 175. The latter number is far less
than we now have (306) in the Pueblo MPO - the smallest of the four.
Bill Moore, MPO Administrator
PACOG MPO/TPR
The May issue of the CTPP Status Report newsletter is now out and posted
at http://www.TRBcensus.com/. The direct link to the newsletter is
http://www.TRBcensus.com/newsltr/sr0508.pdf. Articles in this quarter's
newsletter include an update on the CTPP consolidated purchase and the
AASHTO SCOP Census Data Working Group, the timeframe for TAZ
delineation, information on the ACS release schedule, using PUMS data in
activity models, the use of Census Data to analyze Limited English
Proficiency populations, the NCHRP Guidebook on using ACS data for
transportation planning and an update on the 2008 national Household
Travel Survey.
For those who attended our May 21st Webinar and wanted to download the
power points they are now available at http://fhwa.acrobat.com/ctpp1.
Once at the site you will need to highlight the presentation of your
choice and then click the "save to my computer" button. The power
points will be posted for the next week.
For those who missed it we will have a repeat performance on Wednesday,
June 4th from 1:00 to 2:30 PM Eastern Time. To register
http://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_reg.as…
If you find that we are out of space please let me know in an email and
I can request more lines.
--
Ed Christopher
Resource Center Planning Team
Federal Highway Administration
19900 Governors Drive
Olympia Fields, Illinois 60461
708-283-3534 (V) 708-574-8131 (cell)
708-283-3501 (F)
Dear Everyone who attended the webinar on Weds, and wanted to download
the files.
FHWA just updated the webinar software and somehow we have TEMPORARILY
lost our materials. The NHI team is working to restore our CTPP web
meeting room.
Thank you for your patience. Since I will be on vacation until June 7,
please contact Ed Christopher with your webinar follow-up questions.
708-283-3534.
Elaine
We have scheduled a second webinar on June 4 to accommodate people who
were unable to attend the May 21 session. The webinar will cover the
same information as the May 21 webinar. (Also, the May 21 webinar
will be archived for 30 days, but because of upgrades to the FHWA
webinar software, I do not yet have a link to the archived materials.
In addition, we will have notes from the Q&A from May 21 posted to the
web meeting room in a few days.)
To assure your space, please pre-register for the June 4 meeting.
Link for registration:
https://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_re
g.aspx?webConfID=14264
This webinar is to update the users' community on the status of the CTPP
program. Over the past few months many of the plans for the Census
Transportation Planning Products (CTPP) program using data from the
American Community Survey (ACS) data have been progressing.
Topics will include what is going on with the Census Transportation
Planning Products Program, AASHTO status report on Oversight Board and
Work Plan, AASHTO SCOP Census Work Group activities (Table definition
and disclosure review board issues, data access software design, and
research and capacity building proposals), Traffic Analysis Zone
definition timeframe and research activities.
Date: June 4, 2008
Time: 1:00 - 2:30 PM (Eastern) which is 10:00 - 11:30 AM (Pacific)
URL: http://fhwa.acrobat.com/ctpp/
TELECONFERENCE NUMBER TO ACCESS AUDIO PORTION
888-455-5419
Passcode: 20628
Contact: If you have difficulty registering please contact Ed
Christopher at edc(a)berwyned.com or 708-283-3534.
__________________________________________________________
***DO THIS NOW - FIRST TIME USERS MUST SELECT THE FOLLOWING LINK FOR
INSTRUCTIONS***
http://fhwa.acrobat.com/wcguide
* This is required for first time users. *
If you are unable to access this link, you may need to install Flash
Player:
http://admin.acrobat.com/common/help/en/support/meeting_test.htm
