CTPP May 2011

ctpp@listserv.transportation.org

32 participants
27 discussions

[CTPP] Join us for "CTPP Data Access Software Basics"

by Weinberger

Hi all, Please join us for CTPP Software Basics on one of the three dates below. Seating is limited and first come first serve. This is a basic introduction to the CTPP data access software and functionality. You will learn how to register/log in, how to access a table, how to manipulate data, or move/swap dimensions within a table, how to download the data and more. If you like, you may first go to: http://ctpp.transportation.org/Pages/3yrdas.aspx and click on “take me to the data” to create a user profile and “poke around” a bit. Register and bring your questions to one of the three trainings below. See you there. Penelope Weinberger CTPP Program Manager AASHTO 202-624-3556 http://ctpp.transportation.org/Pages/default.aspx <http://ctpp.transportation.org/Pages/default.aspx> It's just as bad to not make a plan as to blindly follow the one you already have. <http://img.gotomeeting.com/g2mimages/1x1.gif> <http://www1.gotomeeting.com/g2w/images/61220428935832225/embed.jpg> CTPP Data Access Software Basics A guided tour through the CTPP Based on three year ACS, including software demo and Q&A Register for a session now by clicking a date below: Wed, May 4, 2011 10:00 AM - 11:00 AM EDT <https://www1.gotomeeting.com/register/209058312> Mon, May 16, 2011 3:30 PM - 4:30 PM EDT <https://www1.gotomeeting.com/register/999583609> Thu, Jun 2, 2011 2:00 PM - 3:00 PM EDT <https://www1.gotomeeting.com/register/899536416> Once registered you will receive an email confirming your registration with information you need to join the Webinar. System Requirements PC-based attendees Required: Windows® 7, Vista, XP or 2003 Server Macintosh®-based attendees Required: Mac OS® X 10.4.11 (Tiger®) or newer <http://img.gotomeeting.com/g2mimages/1x1.gif>

12 years, 6 months

RE: [CTPP] IPF macro?

by Elaine.Murakami＠dot.gov

Here is the challenge! I do not know how to do IPF, but I know that many of you out there can do it! Attached are: ACS B08101 ; ACS B08006 for Maricopa County Arizona. You can ignore the MOE cells for this IPF challenge. Also attached is a 3-way tabulation using IPUMS for Maricopa County AZ. All are using 2009 ACS. You will note that carpool is not broken out, as the question is really in 2 parts (what mode, and then how many people), so this table could be re-done by creating a carpool variable, if you wanted. We have an archived webinar on using IPUMS, if you are interested in making your own tabs using ACS PUMS. http://ctpp.transportation.org/Pages/webinardirectory.aspx Elaine -----Original Message----- From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Erlbaum, Nathan (DOT) Sent: Friday, March 11, 2011 11:42 AM To: ctpp-news(a)chrispy.net Subject: RE: [CTPP] 2010 Data Release Watch Noted below is a question and a response that appeared on the list serve earlier today and that suggests a solution method to creating data that almost exists but is needed. I am reposting this to the list serve, because I believe that this might be a worthwhile effort for someone who is adept and familiar with IPF to provide a valuable resources to the CTPP community in much the same way the ACS MOE spreadsheets have evolved to explain how to deal with this statistical concept in an easy to use way for the practitioner. Recently there was a post to the listserve by Jonnette Kreideweis about the Census Conference in California and the call for papers. There was also a recent post about the Planning Methods Conference. A spreadsheet that would answer the question posed is potentially a good basis for a paper. Further it helps share skills with the larger practitioner community based upon solutions and techniques that others have implemented. When presented and discussed on a listserve then many more people perhaps those who might never consider this as an option may now have a solution to the very same problem or may move on to adapt the method to other analysis areas. I want to encourage anyone who has the time to give it a try, maybe a student can use this to apply what they have learned, or a modeler can cannibalize something he/she has already used, many may benefit from you efforts. ---------------------------------------------------------- Nathan Erlbaum Associate Transportation Analyst Office of Policy, Planning & Performance New York State Department of Transportation 50 Wolf Road, 6th Floor Albany, New York 12232 (Tel) 518.457.2967 (Fax) 518.457.4944 (E-mail) nerlbaum(a)dot.state.ny.us (Web) www.nysdot.gov >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Marcus Wigan wrote: > ed > > a terribly simple question > > How best to do age group by gender by travel on the CTTP! > best > marc >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Ed Christopher's response: Unfortunately, there is no clean way to get Age by Gender by Mode (Means of travel), that I know about, directly out of the current 3-year CTPP data product nor the Standard Census ACS products for that matter. However, there are some options that will get you close but they will take a little work. Option 1. In CTPP take table 12201 ( Age by Mode to work) and table 11203 (Age by Sex/gender)and run an IPF (Iterative Proportional Fitting-fratar) routine between the two tables to get what you want. At least I think it will work. Option 2. Do the same with standard ACS product tables B08006 (Sex by Mode) and B08101 (Mode by Age). If you go this route I think these tables may even exist in the 5-year ACS so you could do it at smaller than Places over 20K population geography. Option 3. Just make your table using the PUMS data but you would be limited to geographical areas of over 100K people. Over the years we has suggested that people use an IPF routine to make tables that might not exist in the various data products. I would be interested in hearing if anyone has actually done it. Have you?

12 years, 9 months

[CTPP] 2010 Data Release Watch

by Ed Christopher

Next week the Census Bureau is poised to release the local-level 2010 Census population counts for Alaska, Florida, Georgia, Kentucky, Minnesota, Montana, New Mexico, North Dakota and Tennessee. Based on a quick and cursory review that leaves only MI, SC, WV, NY, MA, NH,ME,RI and PR. http://2010.census.gov/2010census/data/ -- Ed Christopher 708-283-3534 (V) 708-574-8131 (cell) FHWA RC-TST-PLN 4749 Lincoln Mall Drive, Suite 600 Matteson, IL 60443

12 years, 9 months

[CTPP] REMINDER: TAZ files to be returned to Census Bureau between June 17 and 30

by Elaine.Murakami＠dot.gov

To the MPOs and State DOTs who are working on TAZ and TAD delineation for 2006-2010 CTPP: Just a reminder that you have approximately 3-5 weeks to complete your work. I hope that the work is progressing well. If you have questions about the software, please contact the Census Bureau Geography Division at 301-763-1099, or via email geo.taz.list(a)census.gov And thank you to all of you who have ALREADY completed this task and returned files to the Census Bureau. Elaine Murakami FHWA Office of Planning 206-220-4460

12 years, 11 months

Re: [CTPP] REMINDER: TAZ files to be returned to Census Bureaubetween June 17 and 30

by Hanna Cockburn

600 pop or workers. Just finished 5 counties. Hanna Cockburn Planning Program Manager Piedmont Triad Council of Governments by blackberry ----- Original Message ----- From: ctpp-news-bounces(a)chrispy.net <ctpp-news-bounces(a)chrispy.net> To: ctpp-news(a)chrispy.net <ctpp-news(a)chrispy.net> Sent: Fri May 27 17:28:29 2011 Subject: Re: [CTPP] REMINDER: TAZ files to be returned to Census Bureaubetween June 17 and 30 What is the site for taz? Thanks, Dloug On Thu, May 26, 2011 at 11:29 AM, <Elaine.Murakami(a)dot.gov> wrote: To the MPOs and State DOTs who are working on TAZ and TAD delineation for 2006-2010 CTPP: Just a reminder that you have approximately 3-5 weeks to complete your work. I hope that the work is progressing well. If you have questions about the software, please contact the Census Bureau Geography Division at 301-763-1099, or via email geo.taz.list(a)census.gov And thank you to all of you who have ALREADY completed this task and returned files to the Census Bureau. Elaine Murakami FHWA Office of Planning 206-220-4460 _______________________________________________ ctpp-news mailing list ctpp-news(a)chrispy.net http://www.chrispy.net/mailman/listinfo/ctpp-news

12 years, 11 months

[CTPP] Census Bureau American FactFinder 2 and DataFerrett Hot line

by Liang.Long.CTR＠dot.gov

Hi, all We attended a Census Bureau American Factfinder 2 and DataFerrett training May 24 and were informed that the Census Bureau is offering toll free numbers for help. I have attached the contact information below and if you have any questions about AFF2 and DataFerrett, you can contact the Census Bureau directly. American Factfinder 2 : 1-800-923-8282 Data Ferrett: 1-866-437-0171 Email: dsd.ferrett(a)census.gov Enjoy! Liang Long Federal Highway Administration Room 74-440 1200 New Jersey, SE Washington, DC 20590 tel 202 366 6971 fax 202 493 2198 e-mail liang.long(a)dot.gov <mailto:liang.long(a)dot.gov>

12 years, 11 months

[CTPP] USDOT Transportation and Demographic Changes May 23rd Forum

by Ed Christopher

On May 23rd USDOT hosted a forum on transportation and demographic changes over the last decade. The 3-hour webcast including the presenter slides will be available at the link below for the next six months. http://mediasite.yorkcast.com/webcast/Viewer/?peid=17f98d9e1a2743a1a9c24b3d… The forum was keynoted by Census Director Robert Groves and featured William Frey and other leading experts. The forum discussed demographic trends from the recently released 2010 census. As expected demographic shifts will have a profound effect on the demand for transportation in coming years. Panels members also examined the transportation implications for urban and rural populations, disability, migration, race, immigration and more. Speakers and Panelists included: Dr. Robert Groves, U.S. Census Dr. William Frey, Brookings Institution Dr. Mark Hugo Lopez, Pew Hispanic Center Dr. Barbara Altman, National Center for Health Statistics Dr. John Cromartie, U.S. Department of Agriculture Dr. Johanna Zmud, Rand Corporation Dr. Richard Marottoli, Yale University Beth Jarosz, San Diego Association of Governments Michael Alexander, Atlanta Regional Commission ---- Ed Christopher 708-283-3534 (V) 708-574-8131 (cell) FHWA RC-TST-PLN 4749 Lincoln Mall Drive, Suite 600 Matteson, IL 60443

12 years, 11 months

[CTPP] how to unsubscribe to the CTPP listserv

by Elaine.Murakami＠dot.gov

Please follow the directions on this page to unsubscribe, or change your listserv preferences. http://www.chrispy.net/mailman/listinfo/ctpp-news From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Dennis Hooker Sent: Wednesday, May 25, 2011 9:36 AM To: ctpp-news(a)chrispy.net Subject: RE: [CTPP] taz delineation How can I get off this list From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Elaine.Murakami(a)dot.gov Sent: Wednesday, May 25, 2011 12:30 PM To: ctpp-news(a)chrispy.net Subject: RE: [CTPP] taz delineation Here are some questions to ask yourself: 1. How much growth (residential population and employment) has occurred and WHERE. If there is a lot of growth, you should make new TAZs and not worry about keeping the same geography. 2. How big or small were the TAZs for CTPP 2000? (In a few cases nationwide in 2000, the TAZs were very very small and the results were probably not reliable). We have never controlled the size of TAZs, and even this time, it is a suggested threshold, not a firm threshold. The software allows you to define very small TAZs, but gives you a warning. You probably DON'T want to compare TAZ-to-TAZ flows between 2000 and the 2006-2010. Most likely, I think that people will use the 2006-2010 CTPP TAZ-to-TAZ flows as a validation data source for their travel demand model. And in some cases, will use an adjusted TAZ-to-TAZ flow as inputs into HB-Work trips (after accounting for the fact that this represents only the journey-TO-work). For comparing between the 2 timeframes, one which is point-in-time and the other a "period estimate", given the ACS sample size, you would be better off to make SuperTAZs (combinations of TAZs) to do the comparison. The UNWEIGHTED sample size after five years of ACS data collection (2006-2010) is about one-half the sample size from the Census 2000 long form, therefore the margin of error is much higher. We are asking MPOs (and State DOTs) to also define TADs, which is another word for a Super TAZs, using a minimum of 20,000 population. This would be approximately the size of 4 or 5 census tracts. For your comparison task, you might want SuperTAZs that are smaller than that. Glad to hear that you understand the difference between your model TAZs and the Census-TAZs defined for CTPP. Elaine Murakami FHWA Office of Planning 206-220-4460 From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Kendra Watkins Sent: Wednesday, May 25, 2011 7:29 AM To: ctpp-news(a)chrispy.net Subject: [CTPP] taz delineation Could someone shed some light on how reliable TAZ to TAZ flow comparisons will be between the 2000 CTPP data and the 2006 - 2010 release? I am asking because as I delineate TAZ's I am trying to prioritize my "rules" for delineation and wonder if TAZ continuity will really be useful if the data won't be comparable anyway. Of course we are keeping our smaller travel model zones as consistent as possible, but our Census TAZ's will be in many cases quite a bit larger. Kendra Watkins Senior Planner Mid-Region Council of Governments 809 Copper Ave. NW Albuquerque, NM 87102 Phone: (505)724-3601 Fax: (505)247-1753 Email: kwatkins(a)mrcog-nm.gov <mailto:tgaudette(a)mrcog-nm.gov>

12 years, 11 months

[CTPP] taz delineation

by Kendra Watkins

Could someone shed some light on how reliable TAZ to TAZ flow comparisons will be between the 2000 CTPP data and the 2006 - 2010 release? I am asking because as I delineate TAZ's I am trying to prioritize my "rules" for delineation and wonder if TAZ continuity will really be useful if the data won't be comparable anyway. Of course we are keeping our smaller travel model zones as consistent as possible, but our Census TAZ's will be in many cases quite a bit larger. Kendra Watkins Senior Planner Mid-Region Council of Governments 809 Copper Ave. NW Albuquerque, NM 87102 Phone: (505)724-3601 Fax: (505)247-1753 Email: kwatkins(a)mrcog-nm.gov <mailto:tgaudette(a)mrcog-nm.gov>

12 years, 11 months

[CTPP] ACS data import tool

by Mike Harmon

Hi Elizabeth I was just looking through the CTPP mailing list and came upon your posting of about having developed an ACS data import tool. I am very interested in this and any other tools you may know of that will help us get all the data we need from the Census to carry out our role as a regional transportation planning agency. We want to establish a comprehensive library about our region that we can draw on in the development of various plans and to answer local agency questions. As it is now, it appears that it is necessary to use the census search tools. Thank you. Michael Harmon Census Data Coordinator San Luis Obispo Council of Governments (SLOCOG) 805-781-5724 mharmon(a)slocog.org

12 years, 11 months

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CTPP May 2011