ctpp-news April 2014

ctpp-news@mailman.chrispy.net

8 participants
6 discussions

FW: Census Bureau News -- Census Bureau Media Advisory Commuting Products to be Embargoed

by Chuck Imbrogno

Apologies to all. Meant to forward to folks in-house. Hit "send" before changing the "recipients" field. Chuck Imbrogno -----Original Message----- From: Chuck Imbrogno Sent: Monday, March 04, 2013 4:11 PM To: 'ctpp-news(a)chrispy.net' Subject: RE: [CTPP] Census Bureau News -- Census Bureau Media Advisory Commuting Products to be Embargoed Shannon, Chuck: FYI - See bottom of this e-mail chain for the "Media Advisory" from the Census Bureau regarding the Commuter Flow data that Tom Fontaine asked about earlier today. Data was "embargoed" by the Census Bureau. Available to the media at noon today, but not released publicly to everyone else (including us) until midnight tonight. Bob Schwartz should be downloading the file sometime in the morning. Chuck Imbrogno -----Original Message----- From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces@chrispy.net] On Behalf Of Graham, Todd Sent: Friday, March 01, 2013 7:32 PM To: ctpp-news(a)chrispy.net Subject: Re: [CTPP] Census Bureau News -- Census Bureau Media Advisory Commuting Products to be Embargoed Census Bureau wil be releasing data and reports on commuting patterns next week. If you have Census PIO embargo access, you'll be able to dig into it as early as Monday afternoon. This is a new product -- so I'm not sure how the data will be structured -- anyone know? Enjoy. --Todd Graham Metropolitan Council Research ________________________________________ From: U.S. Census Bureau [census(a)subscriptions.census.gov] Sent: Friday, March 01, 2013 9:54 AM Subject: Census Bureau News -- **Census Bureau Media Advisory** Commuting Products to be Embargoed FOR IMMEDIATE RELEASE: FRIDAY, MARCH 1, 2013 Public Information Office CB13-39 301-763-3030 email: <pio(a)census.gov> ***CENSUS BUREAU MEDIA ADVISORY*** Commuting Products to be Embargoed The U.S. Census Bureau's Public Information Office will offer an embargo period next week for members of the media to view a series of commuting products. Statistics will be available for every county in the U.S. showing the number of workers that commute in or out and which counties those commuters travel to and from. Additional reports and tables, based on statistics from the American Community Survey, examine U.S. residents traveling across county and state lines to work. Specifically, the products present U.S. workers who have commutes of 60 minutes or longer and workers who have "mega commutes" of at least 90 minutes and 50 miles. Statistics will also be available for every county in the U.S. that show the number of workers that commute into or out of the county and which counties those commuters travel to and from. The reports and tables will be posted to the Census Bureau's embargo site at noon EST Monday, March 4. The public release will be at 12:01 a.m. EST Tuesday, March 5. Wire and distribution services are prohibited from distributing embargoed news releases and data files to subscribers before the public release date and time. If you are interested in scheduling a radio interview on Tuesday, March 5, please contact the U.S. Census Bureau Public Information Office at 301-763-3030. _______________________________________________ ctpp-news mailing list ctpp-news(a)ryoko.chrispy.net http://ryoko.chrispy.net/mailman/listinfo/ctpp-news

10 years, 7 months

Census Bureau ACS Content Review

by Ed Christopher

Below is the link to a 1 hour webinar that the ACS Data User Group held on the "new" Content Review that the Census Bureau is undergoing. Under the review process ALL of the questions on the ACS questionnaire will be carefully reviewed with what many believe could lead to a smaller questionnaire with less content. With that said users with an interest in the ACS will want to listen to the webinar. https://www1.gotomeeting.com/register/523049553 When you go to the link you will be asked to provide your email address and a couple of other pieces of information. -- Ed Christopher

10 years, 8 months

Beta Release of Workforce Statistics Analysis Tool

by Ed.Christopher＠dot.gov

This may be of interest to some on this list. U.S. Census Bureau News FOR IMMEDIATE RELEASE: MONDAY, APRIL 14, 2014 Beta Release of Workforce Statistics Analysis Tool The U.S. Census Bureau is unveiling a new Web-based analysis tool that provides access to the full Quarterly Workforce Indicators dataset. The tool - named QWI Explorer - includes measures on employment, job creation and destruction, hires and wages from the Longitudinal Employer-Household Dynamics program. QWI Explorer allows users to compare, rank and aggregate indicators across time, geography and/or firm and worker characteristics. Potential analyses include a look over time at wages by worker sex and age across counties, ranking job creation rates of young firms across NAICS (North American Industry Classification System) groups, and comparing hiring levels by worker race and education levels across a selection of metropolitan areas. More information about this new tool is available here [ http://lehd.ces.census.gov/applications/help/qwi_explorer.html?eml=gd&utm_m…] and a video tutorial is available here [http://lehd.ces.census.gov/applications/help/qwi_explorer.html?eml=gd&utm_m…]. Visit QWI Explorer [http://qwiexplorer.ces.census.gov?eml=gd&utm_medium=email&utm_source=govdel…] to use the tool. http://lehd.ces.census.gov/applications/help/qwi_explorer.html?eml=gd&utm_m… Ed Christopher

10 years, 8 months

2014 TRB Tools of the Trade Conference July 21-23 in Burlington, VT

by Elaine.Murakami＠dot.gov

Hope I'll see you at the Tools of the Trade conference. I am organizing a Federal Data Workshop, and Ed Christopher is organizing a Health and Transportation workshop on the first day of the conference. There are many other sessions in which you may be interested. By the way, if you are planning to attend the Federal Data Workshop, you should plan to bring a laptop, as we are planning some exercises on data access systems. We have been promised that the conference room will allow for this! Elaine Murakami FHWA Office of Planning 206-220-4460 (in Seattle) From: Emma Long [mailto:elong@ccrpcvt.org] Sent: Wednesday, April 02, 2014 10:12 AM To: Murakami, Elaine (FHWA) Subject: Registration is open! 2014 TRB Tools of the Trade Conference Having trouble viewing this email? Click here to view it in a browser. <http://campaign.r20.constantcontact.com/render?llr=czhupukab&v=001VxpbIorwh…> [http://ih.constantcontact.com/fs185/1110936526626/img/203.jpg] <http://r20.rs6.net/tn.jsp?e=001HKAhsz94ZGj7X8uH7LY1XeVl31AzZhJShirK4nZoniwU…> Registration is now open! 14th National TRB Tools of the Trade Transportation Conference July 21-23, 2014 | Burlington, Vermont Dear Elaine, Registration is now open for the 2014 TRB Tools of the Trade Transportation Conference<http://r20.rs6.net/tn.jsp?e=001HKAhsz94ZGj7X8uH7LY1XeVl31AzZhJShirK4nZoniwU…>! Join us in beautiful Burlington, Vermont this summer for three days of presentations, interactive workshops, panel discussions, networking and much more to enhance your transportation planning practice in small and medium-sized communities. PROGRAM: We have an exciting program<http://r20.rs6.net/tn.jsp?e=001HKAhsz94ZGg0v01cGdHnVDD_514YO1cBULucP2SFsGpY…> planned, and your registration fee includes most meals, morning and afternoon breaks, a waterfront welcome reception at the ECHO Lake Aquarium & Science Center<http://r20.rs6.net/tn.jsp?e=001HKAhsz94ZGi00yDZ2uVUdjYEVQeCDmS9ixGNLaBtDEoS…>, and an offsite dinner cruise<http://r20.rs6.net/tn.jsp?e=001HKAhsz94ZGihT08MVXRrbTFrnp94tlJJHQ9nCgkeBV2i…> on Lake Champlain. NOTE: Dinner cruise space is limited; register early for a guaranteed ticket! HOTEL REGISTRATION: The conference will be held at the Sheraton Hotel in Burlington. Discounted conference lodging rates are valid through June 15 only; be sure to reserve your room early! [Learn More & Book Now<http://r20.rs6.net/tn.jsp?e=001HKAhsz94ZGjG0b5N0zyKSxBIw2B4Fp4O51zwGpq6slqZ…>] CONFERENCE REGISTRATION: Advance Registration is $295 and will continue through June 15. After June 15, registration will increase to $350. Student registration is $150. Extra event tickets are $20 for the welcome reception and $50 for the dinner cruise. [Learn More & Register Now<http://r20.rs6.net/tn.jsp?e=001HKAhsz94ZGj7X8uH7LY1XeVl31AzZhJShirK4nZoniwU…>] MOBILE WORKSHOPS: On Wednesday afternoon, explore Burlington by bicycle, foot or transit when you attend one of the five mobile workshops offered. Sessions include a bicycle tour along Burlington's Island Line Trail, where participants will learn about innovative approaches to trail development, a walking tour that highlights Burlington's downtown and waterfront infrastructure improvements, and more. $15-$40/pp. Availability is limited; be sure to register early for these active training sessions! SPONSOR OR VENDOR? Special registration instructions will be sent to you. Please wait to register until you have received this information. Please feel free to forward this email to anyone who may be interested in attending. If you have any questions or need additional information, please contact: Emma Long Chittenden County Regional Planning Commission elong(a)ccrpcvt.org<mailto:elong@ccrpcvt.org> | (802) 846-4490 x21 We look forward to seeing you this summer! Co-sponsored by the U.S. Department of Transportation Federal Highway Administration and the Transportation Research Board's Committee on Transportation Planning in Small and Medium-Sized Communities. Thank you to our Platinum Sponsors: [Federal Highway Administration]<http://r20.rs6.net/tn.jsp?e=001HKAhsz94ZGjVCOUA1UtLANQm7m7tpoaYUDoM9uZwv5Ro…>[VTrans]<http://r20.rs6.net/tn.jsp?e=001HKAhsz94ZGiwoko7lfxu7We__qHzmHCB3X51hTA5ve6m…> Forward this email<http://ui.constantcontact.com/sa/fwtf.jsp?llr=czhupukab&m=1110936526626&ea=…> [http://img.constantcontact.com/letters/images/SafeUnsubscribe_Footer_Logo_N…]<http://visitor.constantcontact.com/do?p=un&mse=001dxstjuHoWkJvmFOQsNbYuzzLt…> [http://img.constantcontact.com/letters/images/CC_Footer_Logo_New.png]<http://www.constantcontact.com/index.jsp?pn=evmnttfunltdreg&cc=TEM_BusLet_0…> This email was sent to elaine.murakami(a)fhwa.dot.gov<mailto:elaine.murakami@fhwa.dot.gov> by elong(a)ccrpcvt.org<mailto:elong@ccrpcvt.org> | Update Profile/Email Address<http://visitor.constantcontact.com/do?p=oo&mse=001dxstjuHoWkJvmFOQsNbYuzzLt…> | Instant removal with SafeUnsubscribe<http://visitor.constantcontact.com/do?p=un&mse=001dxstjuHoWkJvmFOQsNbYuzzLt…>(tm) | Privacy Policy<http://ui.constantcontact.com/roving/CCPrivacyPolicy.jsp>. Chittenden County Regional Planning Commission | 110 W. Canal Street | Winooski | VT | 05404

10 years, 8 months

ACS Data Users Conference

by Ed Christopher

This may be of interest to those on this list. Even if you can not make the conference it may be worthwhile to check out the ACS Data Users webpage and participate in the online community. ---------------- Register now for the inaugural American Community Survey (ACS) Data Users Conference, to be held May 29-30, 2014, at the Holiday Inn Capitol, in Washington, D.C. A limited number of hotel rooms have been reserved at a special conference rate of $224 so please *book by April 14* to ensure your reservation. The ACS Data Users Conference is being organized by Sabre Systems and the Population Reference Bureau in partnership with the U.S. Census Bureau. Space at the conference is limited and registration is on a first come/first served basis. The final deadline for registration is Thursday, May 22, 2014. For more information and to register for the conference, visit: www.acsdatausers.org/Events.aspx <http://www.acsdatausers.org/Events.aspx>. http://www.acsdatausers.org/ -- Ed Christopher

10 years, 8 months

CTPP Flows

by Ken.Cervenka＠dot.gov

Hello, I would like to offer two additional "checks" that could be done, but with the caveat that while the following is not perfect by any means (and in some cases could be potentially misleading, if the subsequent analysis is faulty), they could lead to a better understanding of the Big Picture accuracy/usefulness of CTPP flows in specific situations. The first is to prepare dot density maps. Here is an example: -- Identify all tracts (or all TAZs) that compose the CBD for a moderate-to-large city. -- Create a database that identifies the total number of workers living in a tract (or TAZ) who have their place of work recorded as being in the CBD (i.e., in one of the tracts or TAZs that compose the CBD). -- Prepare a dot density map and visually examine the results to see if they make sense. I would think such a visual analysis could help identify Big Picture situations where the ACS geocoding effort may have consistently identified the wrong workplace location for a large number of records. But what if nothing stands out as particularly odd to those with considerable familiarity about the region? It doesn't seem to be done very often, but for those with access to an employer database for a specific work location (i.e., a database with lots of location-specific workers), in which each worker's home location is known (at least their zip code, or maybe even just their place of residence), it could be interesting to prepare and compare two different dot density maps: one based on the employer database, the other based on the CTPP. There will most likely be LOTs and LOTs of small differences in the spatial distribution of home locations (plus for that matter, limitations associated with use of a five-year accumulation of ACS records that are compared against a "current" database of employee's homes), but that is expected from any analysis based on small samples. The comparative visual checks of interest would be to see if there are any big differences that result in a "say what?" kind of reaction, e.g., if the employer database shows that 25% of all workers have residences located in the quadrant northeast of the workplace, but the CTPP flows indicate a distribution of 10% or 40%, that is worth some additional exploration. It would also be interesting to prepare a dot density map based on LEHD flows, to see how that compares. This email is already getting into too many nuances that makes this appear a lot more complicated than it really needs to be, but other sources that might be interesting to explore include the flow data available for purchase from private vendors and use of license plate surveys to identify the "home zip code locations" for cars parked in downtown lots/garages. Another check is perhaps a bit too much on the "exploratory research" side for most people's tastes, but it would be interesting to use a traffic assignment model to "assign" the TAZ-to-TAZ CTPP flows (for auto trips) to a metropolitan area road network, and compare the assigned volumes to AM peak period TOD counts. The reason to compare to AM peak counts, rather than daily counts, is that most home to work trips take place in the AM peak period, plus most trips in the AM peak period trips are commute trips. Certainly not a perfect test, but if the assigned CTPP link volumes are wayyy off from the AM peak counts, that could raise some eyebrows. Best wishes, Ken Cervenka FTA Office of Planning and Environment From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces@chrispy.net] On Behalf Of Murakami, Elaine (FHWA) Sent: Monday, March 31, 2014 4:52 PM To: ctpp-news(a)chrispy.net Subject: Re: [CTPP] tract level data Great timing! Glad to hear that you are looking at the CTPP Part 3 data at the tract level. Recently, Liang Long and I have been looking at some flow pairs at the tract level, but you all (out there in the real world) have local knowledge to best evaluate the results. Wendall Cox of Demographia recently identified a problem in Los Angeles, which is the Port of Los Angeles, next to the Port of Long Beach, showing very large worker flows using transit for a pair that is about 25 miles distance. We have asked Yong Ping Zhang at SCAG to help us figure out what might be going on. Also, we have heard from the Baltimore Metropolitan Council that there appear to be miscoded workplaces between Baltimore City and Baltimore County, for which they have initiated discussions with the Census Bureau on some training for ACS field interviewers. Also, it may be that more responses using the Internet for ACS will ameliorate some of these errors. My advice: As a first step, pull the Part 2 (workplace data) at the tract level and find all your tracts with very high worker counts. For some regions, this might be census tracts with more than 10,000 workers. In other metro areas, this might be tracts with more than 5000 workers. Look at the means of transportation for these tracts and see if they are reasonable using your own professional judgement. You can compare the results to the CTPP 2000, which will be easier in areas where the tract boundaries have been stable. After you have determined that the Part 2 data appear reasonable, THEN look at the Part 3 flows. Yes, the Margins of Error at the tract level will be high as the sample size of the ACS is small, about 50% the sample size of the Census 2000 long form, even after 5 years of accumulated ACS records. You will notice that often the MOE is a value between 110 - 130, no matter what the estimate is. This is probably because the estimate is based on 1,2 or 3 unweighted records. While the CTPP does not include the unweighted number of workers at workplace location, there is a residence-based table A101106 of the unweighted sample count of PERSONS, which will give you a sense of how small the sample of WORKERS might be when workers are distributed to all the workplace locations. You should also look at TAD to TAD flows. We asked the local transportation agencies to define TADs (about the size of 4 or 5 census tracts) because this is reduce the MOEs. If you see a big problem in your Part 2 data, please contact us-either Penelope Weinberger at AASHTO pweinberger(a)aashto.org<mailto:pweinberger@aashto.org> , Liang Long at Cambridge Systematics llong(a)camsys.com<mailto:llong@camsys.com> , or me. Currently, Cambridge Systematics is conducting a CTPP Usability study for AASHTO's CTPP program, so everyone's feedback is welcome. Elaine Murakami FHWA Office of Planning 206-220-4460 (in Seattle) From: ctpp-news-bounces(a)chrispy.net<mailto:ctpp-news-bounces@chrispy.net> [mailto:ctpp-news-bounces@chrispy.net] On Behalf Of Harun Rashid Sent: Monday, March 31, 2014 11:09 AM To: ctpp-news(a)chrispy.net<mailto:ctpp-news@chrispy.net> Subject: [CTPP] tract level data CTPPers, have any of you done flow analyses at tract level? With each CTPP release, we conduct that for small planning areas. For this, we need tract-tract flows with numbers from A302100 table. In identifying commuter flows to downtown urban core of the region (Charleston MSA, South Carolina), we found very large MOEs for each tract-tract pair. Of a total of 940 tract-tract pairs identified to have flows to the study area, 622 have MOEs larger than estimates! I am checking to see if anyone else experienced the same issue, and how this is being handled. I was thinking of using some sort of filters, e.g. considering only the pairs that have estimates larger than MOEs. Any suggestions will be appreciated. TIA. Harun Harun Rashid, AICP Senior GIS Planner BCD Council of Governments 1362 McMillan Avenue, Suite 100 North Charleston, SC 29405 T: 843.529.0400 F: 843.529.0305 www.bcdcog.org<http://www.bcdcog.org>

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ctpp-news April 2014