ctpp-news June 2012

ctpp-news@mailman.chrispy.net

18 participants
14 discussions

Phillip Cox/D04/Caltrans/CAGov is out of the office.

by Phillip Cox

I will be out of the office starting 06/08/2012 and will not return until 06/11/2012. David Lea will be acting Branch Chief.

12 years, 6 months

Re: [CTPP] ACS/CTPP vs. LEHD (Spear, Bruce)

by Bruce Spear

Hi Nick, In addition to what Todd mentioned, we found a few other factors that are likely to create differences in the ACS vs. LED totals. The ACS is based on a relatively small sample (~ 2.5% per year) of all households nationwide, but this sample is expanded based on county population to produce the totals you see. The problem is that low frequency events such as work trips between distance zones are unlikely to be captured in a small sample. When the sample is expanded, the low frequency trips are still zero, while trips between zones that were sampled must be given a higher weight to match the county population totals. As a result, the ACS flows look a lot lumpier than the LED flows, which do capture the low frequency home and work locations. The ACS only asks about a worker's primary job, while the LED captures all workers and employers for covered trips. Therefore the LED picks up flows of workers with secondary jobs. Many of the very long distance commutes picked up in the LED are probably people who are on temporary assignment, living away from their reported place of residence (as far as their federal tax return is concerned), or weekend commuters who live in an apartment during the week and travel home on weekends. There are far too many of these folks reported in the LED and even in the 2000 CTPP for it to simply be data error. I suggest you read the final report we did for NCHRP 8-36, 98, title Improving Employment Data for Transportation Planning. The report presents the findings from a study we did that examines the differences between CTPP and LED data, and contains some interesting and useful tables that compare differences at the state, county, and even Census Tract levels of geography. You can download a copy of the report from the TRB website at the following URL: http://onlinepubs.trb.org/onlinepubs/nchrp/docs/NCHRP08-36(98)_FR.pdf Bruce D. Spear, PhD Cambridge Systematics Inc. 100 Cambridgepark Drive, Suite 400 Cambridge, MA 02140 tel 617-234-0417 fax 617-354-1542 bspear(a)camsys.com www.camsys.com From: ctpp-news-request(a)chrispy.net To: ctpp-news(a)ryoko.chrispy.net Date: 06/06/2012 05:31 PM Subject: ctpp-news Digest, Vol 100, Issue 4 Sent by: ctpp-news-bounces(a)chrispy.net Send ctpp-news mailing list submissions to ctpp-news(a)ryoko.chrispy.net To subscribe or unsubscribe via the World Wide Web, visit http://ryoko.chrispy.net/mailman/listinfo/ctpp-news or, via email, send a message with subject or body 'help' to ctpp-news-request(a)ryoko.chrispy.net You can reach the person managing the list at ctpp-news-owner(a)ryoko.chrispy.net When replying, please edit your Subject line so it is more specific than "Re: Contents of ctpp-news digest..." Today's Topics: 1. Re: ACS/CTPP vs LEHD (Graham, Todd) 2. Re: ACS/CTPP vs LEHD (Kim, Kyeongsu (DOT)) ----- Message from "Graham, Todd" <todd.graham(a)metc.state.mn.us> on Wed, 6 Jun 2012 16:11:25 -0500 ----- To: "'ctpp-news(a)chrispy.net'" <ctpp-news(a)chrispy.net>, "'lindeman(a)nashvillempo.org'" <lindeman(a)nashvillempo.org> Subject: Re: [CTPP] ACS/CTPP vs LEHD Reading the documentation of the two data resources: always a good place to start. At regional or state level of summary, totally different data frames is your main issue: a. Census ACS counts workers through a household survey, relying on individually-provided info on work. Many kinds of work are counted, including self-employment and occasional casual work. b. Meanwhile, the LED uses the data frame of BLS QCEW, counting wage & salary jobs that are ?covered? by the Unemployment Insurance system. In Minnesota, over 20% of BEA-counted jobs (a broader employment concept) are outside of this frame, are *not* covered, and thus not counted in LED. At local level, there are still other issues: a. How well can Census ACS represent job locations? b. And does the LED program move its workplace locations around on the map, in order to obscure exact location? Hope that helps. Good luck. Todd Graham | Principal Forecaster Metropolitan Council | 390 North Robert Street | Saint Paul, MN 55101 tel: 1+651-602-1322 | fax: 1+651-602-1674 | e: todd.graham(a)metc.state.mn.us in: www.linkedin.com/in/toddgraham Visit www.metrocouncil.org/data for the latest in regional information. From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces@chrispy.net] On Behalf Of Lindeman, Nicholas (MPO) Sent: Wednesday, June 06, 2012 3:22 PM To: 'ctpp-news(a)ryoko.chrispy.net' Subject: [CTPP] ACS/CTPP vs LEHD I?ve sent the following query to both the ACS and CTPP but have not (yet) received a response. I was hoping someone on the mailing list might be able to provide assistance. I?ve been working with Longitudinal Employer-Household Dynamics (LEHD)in On the Map. Specifically worker inflow/outflow analysis at the county level. I?ve discovered that there is a significant difference between the LEHD data and ACS Place of Work data from the 2008-10 3-Year ACS product. I've found that for the Middle Tennessee (Nashville) region the % of workers residing outside their home county is nearly 17 percentage points higher in the LEHD data than in the ACS data. Please see the attached table. I've been tasked with determining the reason(s) for this difference. Any assistance you can provide would be greatly appreciated Thank you, Nick Lindeman Nicholas Lindeman Economic & Systems Data Analyst Nashville Area MPO 800 2nd Ave. S. P.O. Box 196300 Nashville, TN 37219-6300 (615) 862-7198 lindeman(a)nashvillempo.org http://www.nashvillempo.org This email is intended to be read only by the intended recipient. This email may be legally privileged or protected from disclosure by law. If you are not the intended recipient, any dissemination of this email or any attachments is strictly prohibited, and you should refrain from reading this email or examining any attachments. If you received this email in error, please notify the sender immediately and delete this email and any attachments. ----- Message from "Kim, Kyeongsu (DOT)" <kkim(a)dot.state.ny.us> on Wed, 6 Jun 2012 17:00:13 -0400 ----- To: "ctpp-news(a)chrispy.net" <ctpp-news(a)chrispy.net> Subject: Re: [CTPP] ACS/CTPP vs LEHD Hi Nick, The difference comes from different data sample. As you know, ACS estimates are based on the survey samples. The upcoming 5 year CTPP will be based on same samples. On the other hand, the LEHD incorporates diverse datasets. There exists possibility of having significant difference between ACS and LEHD. I believe, however, Census Bureau tries to minimize the gap. FYI, please find the link that NYCDOT under Nathan Erlbaum (who just left us in April) examined. https://www.dot.ny.gov/divisions/policy-and-strategy/darb/dai-unit/ttss/ctt… Hope this help, Kyeongsu Kim Census and Travel Survey NY Metropolitan Transportation Council 199 Water Street 22nd fl New York, NY 10038 kkim(a)dot.state.ny.us 1-212-383-7233 From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces@chrispy.net] On Behalf Of Lindeman, Nicholas (MPO) Sent: Wednesday, June 06, 2012 4:22 PM To: 'ctpp-news(a)ryoko.chrispy.net' Subject: [CTPP] ACS/CTPP vs LEHD I?ve sent the following query to both the ACS and CTPP but have not (yet) received a response. I was hoping someone on the mailing list might be able to provide assistance. I?ve been working with Longitudinal Employer-Household Dynamics (LEHD)in On the Map. Specifically worker inflow/outflow analysis at the county level. I?ve discovered that there is a significant difference between the LEHD data and ACS Place of Work data from the 2008-10 3-Year ACS product. I've found that for the Middle Tennessee (Nashville) region the % of workers residing outside their home county is nearly 17 percentage points higher in the LEHD data than in the ACS data. Please see the attached table. I've been tasked with determining the reason(s) for this difference. Any assistance you can provide would be greatly appreciated Thank you, Nick Lindeman Nicholas Lindeman Economic & Systems Data Analyst Nashville Area MPO 800 2nd Ave. S. P.O. Box 196300 Nashville, TN 37219-6300 (615) 862-7198 lindeman(a)nashvillempo.org http://www.nashvillempo.org _______________________________________________ ctpp-news mailing list ctpp-news(a)ryoko.chrispy.net http://ryoko.chrispy.net/mailman/listinfo/ctpp-news

12 years, 6 months

NTD Urbanized Area

by John Voges

Today's Topics: 1. NTD Urbanized Area (John Voges) 2. NTD Urbanized Area (Earl Haugen) 3. Re: NTD Urbanized Area (Elaine.Murakami(a)dot.gov) ---------------------------------------------------------------------- I talked to our representative from NTD regarding which urbanized area number to use in the NTD reporting screen. He said that NTD determines the UZA population to be used for the transit reporting agency and that we don't determine that or input that data. He also said that the UZA numbers to be used by NTD will be available this fall sometime, around August or September. John Voges Sr. Transportation Planner Ocala/Marion TPO 352-629-8297 Message: 1 Date: Tue, 5 Jun 2012 11:41:02 -0700 (PDT) From: Earl Haugen <earl.haugen(a)theforksmpo.org> Subject: [CTPP] NTD Urbanized Area To: "ctpp-news(a)chrispy.net" <ctpp-news(a)chrispy.net> Message-ID: <1338921662.52092.YahooMailNeo(a)web5710.biz.mail.ne1.yahoo.com> Content-Type: text/plain; charset="utf-8" beginning of an email from NTD regarding transit operators and 2010 urbanized areas: As most of you already know, the US Census Bureau has recently announced a new set of Urbanized Areas based on the results of the 2010 Decennial Census. Additionally, FTA is required by law to use these new Urbanized Areas for the Fiscal Year 2013 Apportionment, which will be based on NTD Report Year 2011 Data. We are expecting that the Census Bureau will very soon be releasing the final Urbanized Area Boundary maps from the 2010 Census. This e-mail is to provide you with additional information on how that process will work. Upon release the Census Boundary maps for the 2010 Census, each of you must identify which Urbanized Area (UZA) or Areas are served by your transit system. In addition, you will need to identify whether your transit systems services any rural or non-urbanized areas. An area is served by your transit system if you pick up passengers in that area. (Note: Some demand response systems allow passengers to travel to a particular location, but do not allow trip originations in that area. In this case, do not list these destinations as ?served? by your transit system.) Please note that you must identify all areas served by your system, regardless of whether or not you plan to allocate service data to those areas. Is this the same as the already released Census urbanized areas (what is new from what has already been released?)? Can we submit our Federal Aid Adjusted Urban Area instead? Or just stick to a Census define boundary of urbanized. Thanks ? Earl T. Haugen Executive Director GF-EGF MPO 701-746-2660 ________________________________ From: Ed Christopher <edc(a)berwyned.com> To: ctpp-news(a)chrispy.net Sent: Tuesday, April 10, 2012 1:37 PM Subject: Re: [CTPP] Urban Area Webinar Here is the link.? I just tried it so it is working. Again, make sure that you are entering the whole link. https://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_reg.a… James Greenstreet wrote: > I have tried repeatedly, and cannot get this link to work.? Please > re-send the full link out to us. > > Thanks, > > Jim Greenstreet > Kankakee County Planning Department > > -----Original Message----- > From: ctpp-news-bounces(a)chrispy.net > [mailto:ctpp-news-bounces@chrispy.net] > On Behalf Of Ed Christopher > Sent: Monday, April 09, 2012 12:03 PM > To: ctpp-news(a)chrispy.net > Subject: [CTPP] Urban Area Webinar > > On March 27, 2012 the Census Bureau released the list of new Urbanized > Areas and Urban Clusters.? For transportation related activities these > boundaries have broad and far reaching affects.? Recognizing that it > is impossible to address each individual situation and question > separately, staff from the Federal Highway Administration. Federal > Transit Administration, Census Bureau and others will conduct a 2-hour > webinar on Boundary Issues and Transportation. > > Participants in the webinar can expect to learn about the various > Transportation related boundaries, where and how they interact with > the federal programs and the steps that state and local agencies need > to take to address the boundary related requirements.? Time will be > allowed for questions and discussion, and additional resources will > also be made available for downloading. > > If you are interested in boundaries from a transportation perspective, > have a particular question or need to learn about them, this webinar is for you. > To make sure your questions get addressed you can send it send them to > ed.christopher(a)dot.gov up to the close of business the day before the > before the webinar, otherwise they will be handled on a first come > basis during the webinar. > > Space for the webinar is currently limited to 350 connections and > registration is mandatory, but free.? Folks who can share one > connection in a conference room setting are encouraged to do so.? The > webinar will be recorded with closed captioning.? Questions discussed > during the webinar will be used to update the Frequently Asked > Questions that FHWA maintains on the subject.? The FAQ can be found at > http://www.fhwa.dot.gov/planning/census_issues/urbanized_areas_and_mpo > _tma/f > aq/ > > The webinar will be > Friday, April 27, 2012 from 1:00 PM to 3:00 PM (Eastern Time) It is > open to everyone. > Register by? Clicking on the link below. > https://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_ > reg.as > px?webconfid=24316 > > > -- > Ed Christopher > FHWA Resource Center Planning Team > 4749 Lincoln Mall Drive, Suite 600 > Matteson, IL? 60443 > > 708-283-3534 (V) > 708-574-8131 (C) > > _______________________________________________ > ctpp-news mailing list > ctpp-news(a)ryoko.chrispy.net > http://ryoko.chrispy.net/mailman/listinfo/ctpp-news > > _______________________________________________ > ctpp-news mailing list > ctpp-news(a)ryoko.chrispy.net > http://ryoko.chrispy.net/mailman/listinfo/ctpp-news > -- Ed Christopher 708-283-3534 (V) 708-574-8131 (cell) FHWA RC-TST-PLN 4749 Lincoln Mall Drive, Suite 600 Matteson, IL? 60443 _______________________________________________ ctpp-news mailing list ctpp-news(a)ryoko.chrispy.net http://ryoko.chrispy.net/mailman/listinfo/ctpp-news

12 years, 6 months

TRB Tools of the Trade Conference September 12-14, 2012 - REGISTRATION IS OPEN

by Elaine.Murakami＠dot.gov

We are pleased to announce that early bird registration is open for the 13th National TRB Tools of the Trade Conference on Planning in Small and Medium-Sized Communities http://www.trbtoolsofthetrade.org/conference/index.html to be held in Big Sky, Montana, September 12-14, 2012. The conference website includes the preliminary program as well as information on traveling to/from Big Sky. Visit http://www.regonline.com/Register/Checkin.aspx?EventID=997402 to register for the conference. Early bird registration is $200 and will continue through August 12, 2012. After August 12, 2012, the registration price will increase to $260. Student registration is $100. For Hotel Reservations call: 1-800-548-4486, ask for the TRB Tools of the Trade rate (Note: $82 for 1 person per room; $107 for 2 people per room in the Huntley Lodge, please see the conference website for other options) Feel free to spread the word by forwarding this email. If you have any questions or need additional information, please contact: Charity Watt, Montana Department of Transportation, at cwatt(a)mt.gov<mailto:cwatt@mt.gov> or (406) 444-3439. You can also visit us on Facebook: http://www.facebook.com/?sk=welcome#!/pages/TRB-Committee-ADA-30/2833357982…<http://www.facebook.com/?sk=welcome> We hope to see you in Big Sky for an engaging program, networking opportunities, and an all around worthwhile conference. Lynn Zanto 13th National TRB Tools of the Trade Logistics Chair http://www.trbtoolsofthetrade.org/conference/index.html Administrator/Transportation Planning Division/Montana Department of Transportation 2960 Prospect Avenue/PO Box 201001/Helena, MT 59620-1001 406-444-3445/Cell: 406-202-0049/Fax: 406-444-7671 lzanto(a)mt.gov<mailto:lzanto@mt.gov>

12 years, 6 months

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ctpp-news June 2012