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Upcoming CTPP Training: Software Basics on Wednesday, May 18 at 2:00 pm Eastern

by Elzinga, Kyla

[https://files.constantcontact.com/ccfdce84701/6fbaaa3b-507d-401a-955f-0d632…] [https://files.constantcontact.com/ccfdce84701/dbea4755-7fcb-4bd8-9ae3-67fd3…] Join an Interactive CTPP Training on May 18! CTPP Data Access Software Basics Wednesday, May 18th, 2022 - 2:00PM to 4:00PM ET In this two-hour training session, you'll learn the basic functions of the CTPP data access software. In this interactive course, you will have the opportunity to work with your classmates to answer questions using the CTPP data and software. You'll learn how to navigate the software, select geographies, find tables, and more! Click here to register today.<https://aashto.adobeconnect.com/softwarebasicsmay2022/event/registration.ht…> Course Format: * Introduction to the CTPP * Demonstration of basic software functions * Interactive group exercise REQUIREMENTS: * The Adobe Connect Application (download available here<https://helpx.adobe.com/adobe-connect/connect-downloads-updates.html>) Registration is limited, so please reserve a seat only if you plan to attend live. This is part of a recurring monthly series on the third Wednesday of every month. Stay tuned for more information on the next training on June 15. Visit https://ctpp.transportation.org/upcoming-events/ to stay up-to-date on future trainings and events.

3 years, 3 months

Two Days until Census Data Conference Early Bird expires - Register and reserve your room TODAY!

by Weinberger, Penelope

Hello all, Two days until the early bird deadline of April 29th for the Census Transportation Planning Products Conference. Register today to join your colleagues in Reno, NV June 7 - 9 2022 for an action packed, content heavy, very interactive conference. Register at: https://web.cvent.com/event/49dc3dc1-5a39-4dae-a96e-ac16afce09fd/websitePag… Room block reserved at the Peppermill hotel for $103 a night. Reserve until May 6th - Book your room at: https://book.passkey.com/event/50239897/owner/7268/home Still on the fence about attending? Here are some resources to help you decide: * An expanded description at-a-glance agenda with more content about what you can expect - https://ctpp.transportation.org/wp-content/uploads/sites/57/2022/04/CTPP-Co… * A short webinar on why we are excited about the conference - https://www.youtube.com/watch?v=tsYfPbQ75Jo Penelope Weinberger Program Manager for Transportation Data, AASHTO Data.transportation.org

3 years, 3 months

Small Area Data (SAD) and the 2020 census

by Ed Christopher

Its been a busy time for those mining their 2020 census data and seeing the affects of differential privacy (DP). Will DP go down in history as a policy boondoggle and fade away or will it be a pivotal turning point in the opening up of high quality public data? I have my opinions but I need to let the bandwagon go by first... -------------------------------- The Census Bureau estimates that among the 323.2 million people who were living in housing units on April 1, 2020: 94.4% were counted correctly. 2.2% were counted erroneously (1.6% were duplicates and 0.6% were erroneous for other reasons).Mar 10, 2022 https://www.census.gov/newsroom/press-releases/2022/2020-census-estimates-o… The 2020 Census Says Some People Live Underwater. There’s a Reason. https://www.nytimes.com/2022/04/21/us/census-data-privacy-concerns.html Why the Census Invented Nine Fake People in One House The bureau’s zealous efforts to protect Americans’ privacy are doing bizarre things to its data. https://slate.com/technology/2022/03/privacy-census-fake-people.html What’s Wrong with the 2020 Census - Why You Should Care - How to Deal with It https://www.directionsmag.com/article/11270 (or how to create techniques to fix data we made bad in the first place) The Commerce Department official who oversaw the 2000 census explains how minorities got under-counted and white people got over-counted in 2020. https://washingtonmonthly.com/2022/04/14/trumps-handling-of-the-2020-census… People, Homes Vanish Due to 2020 Census' New Privacy Method https://www.usnews.com/news/politics/articles/2021-10-31/people-homes-vanis… The 2020 US Census Differential Privacy Method Introduces Disproportionate Discrepancies for Rural and Non-White Populations https://link.springer.com/article/10.1007/s11113-022-09698-3 -- Ed Christopher Transportation Planning Consultant 708-269-5237

3 years, 3 months

Upcoming CTPP Session: Spotlight on Census Data for Transportation Planning Conference on Wednesday, April 20 at 2:00 pm Eastern

by Weinberger, Penelope

Book your hotel! Register for the conference! Come to the Spotlight session! From: CTPP at American Association of State Highway and Transportation Officials (AASHTO) <news(a)aashto.org<mailto:news@aashto.org>> Sent: Tuesday, April 12, 2022 3:07 PM To: Weinberger, Penelope <pweinberger(a)aashto.org<mailto:pweinberger@aashto.org>> Subject: Upcoming CTPP Session: Spotlight on Census Data for Transportation Planning Conference on Wednesday, April 20 at 2:00 pm Eastern Monthly CTPP Training Series [https://r20.rs6.net/on.jsp?ca=ef9be2f4-3c7d-4c3a-a0a1-b321de8ee0a3&a=113079…] [https://files.constantcontact.com/ccfdce84701/6fbaaa3b-507d-401a-955f-0d632…] [https://files.constantcontact.com/ccfdce84701/dbea4755-7fcb-4bd8-9ae3-67fd3…] Learn more about the Census Data for Transportation Planning conference at the CTPP spotlight session on April 20! Spotlight Series: Spotlight on Census Data for Transportation Planning Conference Wednesday, April 20th, 2022 - 2:00PM to 3:00PM EDT Are you on the fence about registering for the conference? Do you have questions, or want to know more? The April 20, 2022 Spotlight Session will highlight the upcoming June conference (click to register): Census Data for Transportation Planning<https://r20.rs6.net/tn.jsp?f=001nECK2lOHSDhecsuNvSZkJ1tGtSOqG3WR5TZjsqUjRfg…>. Join to hear about the recent work putting the conference together and a preview of the exciting featured program. Early bird registration ends April 29! Click here to register for the April 20 session today.<https://r20.rs6.net/tn.jsp?f=001nECK2lOHSDhecsuNvSZkJ1tGtSOqG3WR5TZjsqUjRfg…> REQUIREMENTS: · The Adobe Connect Application (download available here<https://r20.rs6.net/tn.jsp?f=001nECK2lOHSDhecsuNvSZkJ1tGtSOqG3WR5TZjsqUjRfg…>) Book Your Hotel Room for the June Census Data for Transportation Planning Conference The Peppermill Reno is holding a block of rooms for meeting attendees through May 6th, at the special group rate of $103 per night plus 13% state and local tax and $2 Tourism Surcharge per night. After this date, rooms will be available at the Hotel's prevailing rates. Reserve your room today<https://r20.rs6.net/tn.jsp?f=001nECK2lOHSDhecsuNvSZkJ1tGtSOqG3WR5TZjsqUjRfg…> Room Block expires May 6th. If your plans are uncertain, please reserve a room. The hotel cancellation policy: Reservations will be subject to a one night charge if cancelled less than 24 hours before the scheduled arrival date. Questions? Contact Penelope Weinberger at pweinberger(a)aashto.org<mailto:pweinberger@aashto.org>. This is part of a monthly series on the third Wednesday of every month. Visit https://ctpp.transportation.org/upcoming-events/<https://r20.rs6.net/tn.jsp?f=001nECK2lOHSDhecsuNvSZkJ1tGtSOqG3WR5TZjsqUjRfg…> to stay up-to-date on future trainings and events. Sign up for the email list here to receive future notice of monthly training dates and subjects: https://ctpp.transportation.org/monthly-training/<https://r20.rs6.net/tn.jsp?f=001nECK2lOHSDhecsuNvSZkJ1tGtSOqG3WR5TZjsqUjRfg…> AASHTO | 555 NW 12th St, Suite 1000, Washington, DC 20005 2026245800 Unsubscribe pweinberger(a)aashto.org<https://visitor.constantcontact.com/do?p=un&m=001tbdTuCcyvFW0aBFfZVEkpw%3D&…> Update Profile<https://visitor.constantcontact.com/do?p=oo&m=001tbdTuCcyvFW0aBFfZVEkpw%3D&…> | Our Privacy Policy<https://www.transportation.org/home/organization/privacy-policy/> | Constant Contact Data Notice<https://www.constantcontact.com/legal/customer-contact-data-notice> Sent by news(a)aashto.org<mailto:news@aashto.org> powered by [Trusted Email from Constant Contact - Try it FREE today.]<http://www.constantcontact.com/index.jsp?cc=nge&rmc=VF21_3GE&pn=ROVING&nav=…> Try email marketing for free today!<http://www.constantcontact.com/index.jsp?cc=nge&rmc=VF21_3GE&pn=ROVING&nav=…>

3 years, 3 months

Upcoming CTPP Session: Spotlight on Census Data for Transportation Planning Conference on Wednesday, April 20 at 2:00 pm Eastern

by Elzinga, Kyla

[https://files.constantcontact.com/ccfdce84701/6fbaaa3b-507d-401a-955f-0d632…] [https://files.constantcontact.com/ccfdce84701/dbea4755-7fcb-4bd8-9ae3-67fd3…] Learn more about the Census Data for Transportation Planning conference at the CTPP spotlight session on April 20! Spotlight Series: Spotlight on Census Data for Transportation Planning Conference Wednesday, April 20th, 2022 - 2:00PM to 3:00PM EDT Are you on the fence about registering for the conference? Do you have questions, or want to know more? The April 20, 2022 Spotlight Session will highlight the upcoming June conference (click to register): Census Data for Transportation Planning<https://web.cvent.com/event/49dc3dc1-5a39-4dae-a96e-ac16afce09fd/websitePag…>. Join to hear about the recent work putting the conference together and a preview of the exciting featured program. Early bird registration ends April 29! Click h<https://events-na10.adobeconnect.com/content/connect/c1/1511944328/en/event…>ere to re<https://events-na10.adobeconnect.com/content/connect/c1/1511944328/en/event…>gister for the April 20 session today.<https://events-na10.adobeconnect.com/content/connect/c1/1511944328/en/event…> REQUIREMENTS: * The Adobe Connect Application (download available here<https://helpx.adobe.com/adobe-connect/connect-downloads-updates.html>) Book Your Hotel Room for the June Census Data for Transportation Planning Conference The Peppermill Reno is holding a block of rooms for meeting attendees through May 6th, at the special group rate of $103 per night plus 13% state and local tax and $2 Tourism Surcharge per night. After this date, rooms will be available at the Hotel's prevailing rates. Reserve yo<https://book.passkey.com/e/50239897>ur r<https://book.passkey.com/e/50239897>oom today<https://book.passkey.com/e/50239897> Room Block expires May 6th. If your plans are uncertain, please reserve a room. The hotel cancellation policy: Reservations will be subject to a one night charge if cancelled less than 24 hours before the scheduled arrival date. Questions? Contact Penelope Weinberger at pweinberger(a)aashto.org<mailto:pweinberger@aashto.org>.

3 years, 3 months

2017-2021 CTPP Disclosure Concerns

by Reschovsky, Clara (OST)

Dear CTPP Listserv members, In June 2021 the CTPP Oversight Board submitted a request to the Census Bureau for the next CTPP package based on 2017-2021 American Community Survey (ACS) survey data. Census Bureau staff, including the Disclosure Review Board (DRB), ACS staff, and Journey-to-Work subject matter experts responded in January 2022 with a memo outlining disclosure concerns and delineating proposed rules for this CTPP special tabulation. The impact of these rules will affect the CTPP package and the Table Subcommittee of the AASHTO Oversight Board is working hard to try and preserve a quality product. The Census Bureau's concerns, and proposed rules include: 1. Reduce the overall size of the package 2. Standardization of Universes, Variables, and Categories wherever possible to match standard Census ACS products 3. Perturbation techniques must be employed 4. Any flow must be subject to an unweighted minimum of 3 persons. This means 3 people had to respond to the ACS that they live in one geography and work in the other. 5. Non-residence geographies must have 50 unweighted cases to avoid suppression. This means that part 2 (workplace) data at small geography will be in jeopardy of being suppressed 6. Mean and Aggregate tables must have a minimum of 3 to be tabulated As a result of the memo and its implications, the Table Subcommittee is developing a response to the Census Bureau to determine a path forward. We have been working with industry experts on that response. To date, our strategy involves: 1. Eliminating block groups in parts 2 and 3 and much of part 1. (A small list of part 1 tables at the block group level is TBD) 2. Universes, variables, and categories/cohorts will be standardized to the extent possible 3. Developing a sound justification for keeping CTPP-specific universes, variables, or categories 4. Expecting perturbation decisions to be data driven and originate at the CB 5. Documenting the loss of data that occurs when the rule of 3 for flows is implemented 6. Mean and Aggregate tables with less than 3 are not very meaningful and are a disclosure risk Where we have significant issues are the 50 unweighted cases at the workplace that renders much of the package useless for parts 2 and 3. We are exploring options such as not having the requirement for a small set of tables or employing either perturbation or synthesizing techniques to supplement what the DRB will approve. The work is ongoing to respond to the Census Bureau. If you have concerns about what is going, please reach out to Arash, Penelope or me. Clara, Arash, and Penelope

3 years, 4 months

Census Bureau final Urban Area criteria for 2020

by Ed Christopher

This may be of interest to some. https://www.federalregister.gov/documents/2022/03/24/2022-06180/urban-area-… Ed Christopher 708-269-5237

3 years, 4 months

New five-year ACS tables released today: March 17, 2022

by Charles Purvis

The Census Bureau released the five-year, 2016-2020 American Community Survey tables today. The r-package TIDYCENSUS worked without a hitch this morning. In case folks are interested in using TIDYCENSUS to examine the three sets of non-overlapping periods: 2006-2010, 2011-2015 and 2016-2020, I’ve updated my R script for all states, counties, places and the US. This is just for the means of transportation to work, plus a few key demographic variables. https://gist.github.com/chuckpurvis <https://gist.github.com/chuckpurvis> Important to note is that the 2016-2020 ACS is based on 2020 Census geography. The older datasets are based on 2010 Census geography. This isn’t a big deal if your geographic areas haven’t changed, 2010 to 2020, but I’d be careful when comparing older (pre-2020) to newest (2016-2020) data, especially for smaller geographies such as tracts, block groups and places. My next step would be to do some count checks of geographies included in Census 2020 PL 94-171 vs the 2016-2020 ACS. Check to make sure that the geographies (block groups, tracts, places, counties) match between the Decennial 2020 and ACS 2016-2020. And to reiterate, there is no single year ACS data for 2020. Those tables are using the “experimental weights” and are only published at the nation and state level. Happy St Patrick’s Day to all! Chuck Purvis, Hayward, California

3 years, 4 months

Census Data for Transportation Planning Conference registration is open

by Weinberger, Penelope

Dear Colleagues, I am beyond excited to announce that the Census Data for Transportation Planning Conference scheduled for June 7 - 9, 2022 in Reno, NV has opened for registration! This conference promises to be heavily technical, interactive and peer to peer, featuring many workshops and sessions on hot topics (equity, workplace geo-coding, tools for data access, geography wrangling, and more), the latest research, and policy implications for census and census derived data. Of course, we will include a healthy dose of social activity as well! Early bird pricing is available until April, 29. See the conference agenda and register today at: https://cvent.me/l7X2ma Please don't hesitate to reach out to me with any questions. I can't wait to see you all. Penelope Weinberger She/They CTPP Program Manager AASHTO Ctpp.transportation.org

3 years, 4 months

Re: Use of overlapping ACS data

by David Heller

Hello: I am still a little confused why using overlapping ACS datasets is not good practice. Can someone explain it to me? Thank you. [cid:image001.png@01D83956.276DFD40] David Heller, PP/AICP Program Manager - Systems Performance and Subregional Programs South Jersey Transportation Planning Organization 782 S Brewster Road, Unit B6 Vineland, New Jersey 08361 (856) 794-1941 | www.sjtpo.org From: Benjamin Gruswitz <bgruswitz(a)dvrpc.org> Sent: Tuesday, March 15, 2022 4:59 PM To: The Census Transportation Products Program Community of Practice/Users discussion and news list <ctpp(a)listserv.transportation.org> Subject: [CTPP News] Re: CTPP commuter flows in strong MCD states (Vermont test case) Yes, Chuck, this is a data advantage for strong MCD regions--the workplace allocation is complete at this subcounty level that covers all areas of each county (as opposed to place, which doesn't have county-wide coverage). And our TAZs nest within our municipal boundaries, so fitting their flows to the MCD total is a good way to go for adjustments. The only issue in our region is that Philadelphia is both a county and MCD, so we don't get a subcounty control for our TAZ workplace fitting within our high pop/high employment urban center the way we do for our smallest boroughs and townships (we have one borough with a population of 10 and employment of 25). Thanks for always pointing us to good resources and encouraging our experienced and burgeoning R users to explore CTPP data with that toolset! Ben Working from Home | 301.655.3170 Ben Gruswitz, AICP | Manager, Socioeconomic & Land Use Analytics (Pronouns: he/him) Delaware Valley Regional Planning Commission 190 N Independence Mall West, 8th Floor Philadelphia, PA 19106-1520<https://www.google.com/maps/place/Delaware+Valley+Regional+Planning+Commiss…> 215.238.2882 | www.dvrpc.org<https://www.dvrpc.org/> Subscribe<https://app.e2ma.net/app2/audience/signup/1808352/1403728/> | Facebook<http://www.facebook.com/DVRPC> | Twitter<http://www.twitter.com/DVRPC> | Instagram<http://www.instagram.com/DVRPC> | LinkedIn<http://www.linkedin.com/company/delaware-valley-regional-planning-commission> | YouTube<https://www.youtube.com/channel/UCEU8UI5_iGkVypHP93b5jLA> [DVRPC]<https://www.dvrpc.org/> On Tue, Mar 15, 2022 at 4:05 PM Charles Purvis <clpurvis(a)att.net<mailto:clpurvis@att.net>> wrote: Being a west coaster, I rarely dabble in MCDs - Minor Civil Divisions, or NECTAs (New England City and Town Areas). I thought this deserves some exploration. I created a new version of my R-package CTPPr script that pulls in intra-state Vermont total commuters: county-to-county, tract-to-tract, and MCD-to-MCD. I’ve shared my Vermont code on my GIST GITHUB. I screwed up yesterday, and had the other scripts in “secret” mode. Oops, sorry. I’ve made the correction. https://gist.github.com/chuckpurvis There are 14 counties in Vermont, 184 census tracts, and 255 MCDs (towns) in Vermont. The 255 MCDs are “wall-to-wall” coverage of the entire state (i.e., no lingering unincorporated “balance of county” areas.) I was surprised that there are fewer census tracts than MCDs in Vermont, but I had some notion that the MCD-to-MCD flow data could be quite valuable (in certain states!) According to the CTPPr documentation, probably the official CTPP documentation, as well, there are MCD-to-MCD commuter flows for the twelve “strong MCD” states. From some random US Treasury document: "Since the government services provided by MCDs differ greatly by state, the Census Bureau refers to twelve states with MCDs that generally provide a wide range of general government services as “strong- MCD” states. In these states, MCDs are generally are treated as municipalities according to state statutes and codes. In eight other states, MCDs typically play less of a governmental role and provide more limited government services, even though they are still active governments (“weak-MCD” states). The twelve strong-MCD states are Connecticut, Maine, Massachusetts, Michigan, Minnesota, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, and Wisconsin. The eight weak-MCD states are Illinois, Indiana, Kansas, Missouri, Nebraska, North Dakota, Ohio, and South Dakota." Here are the highlights of this Vermont test case: Total Workers, Intra-State, Vermont: County-to-County = 298,422 total workers MCD-to-MCD = 299,415 total workers tract-to-tract = 214,970 total workers. The county-to-county and MCD-to-MCD totals for Vermont should be very, very close, since they both have the “standard allocation procedures” that the Census Bureau uses to impute missing workplace to the county and place level. I’m pretty sure the difference between county-to-county and MCD-to-MCD is rounding issues? Can never tell. The tract-to-tract file does not have the standard allocation procedures applied: it’s the raw data, rounded of course. If I were Vermont, I’d stick with MCD-to-MCD flows as the best bet for controls. Adjust/factor any of the TAZ-to-TAZ flow data to MCD-to-MCD. Happy Ides of March, Chuck Purvis Hayward, California _______________________________________________ CTPP mailing list -- ctpp(a)listserv.transportation.org<mailto:ctpp@listserv.transportation.org> To unsubscribe send an email to ctpp-leave(a)listserv.transportation.org<mailto:ctpp-leave@listserv.transportation.org>

3 years, 4 months

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