CTPP May 2006

ctpp@listserv.transportation.org

3 participants
3 discussions

RE: [CTPP] Re: Commuting Patterns Projections

by Miller

You can look at an analysis of northern and central NJ county-to-county commuting patterns and trends from 1980 to 2000 at: http://www.njtpa.org/planning/census2000/2000JTWAnalysis2.pdf (a 2.2 MB PDF file) Sincerely, Keith Miller ------------------------------------------------------------------------ Keith Miller Manager: GIS and Forecasting North Jersey Transportation Planning Authority, Inc. One Newark Center, 17th floor Newark, NJ 07102 973-639-8444 phone 973-639-1953 fax kmiller(a)njtpa.org -----Original Message----- From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of TMarchwinski(a)njtransit.com Sent: Sunday, April 30, 2006 3:31 PM To: edc(a)berwyned.com; ctpp-news(a)chrispy.net Cc: Mluebbers(a)oki.org Subject: RE: [CTPP] Re: Commuting Patterns Projections We looked at county commuting patterns from 1980 to 2000 for Northern NJ (including to NY), and once tried to use trends to establish new forecasts, the problem we ran into was the growth in inter-county trips was so high in many cases, that if you just extrapolated the trends you wound up with non-sensical intra-county commuting trips, to the point that some counties had only 20% or 25% of their work trips intracounty. WE had to modify this on a case by case basis, and established a floor below which intracounty commuting would not fall below. That was using 1980-2000 as a basis. I really think this is a case by case analyis based on each metropolitan area. In my opnion you really need to look at results and not wholly use trends, and going back to 1970 may not make sense given it was so different and pre 1973 with oil prices. -----Original Message----- From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Ed Christopher Sent: Thursday, April 27, 2006 12:27 PM To: ctpp-news maillist Cc: Mary Luebbers Subject: [CTPP] Re: Commuting Patterns Projections I am passing this question I got on to the CTPP listserve in case anyone can add to discussion. I hope Mary does not mind--its an important question. Mary Luebbers wrote: > Ed: > To your knowledge, has anyone developed projections of inter-county > commuting patterns based on trends from 1970 to 2000 (from CTPP data > and its precursors)? > > Thanks. > Mary S. Luebbers > OKI Regional Council of Governments > Mary--I have not seen any but that does not mean that someone hasn't done it. Personally, I could think of a hundred reasons to pick at any projections especially if I didn't like the look of the numbers but that does not mean that the flow history wouldn't be able to add some insights and dimension to any projections. Projections always flow better when they appear tied to some historical context, but I digress.. .While these are not exactly projections they are some examples of how I have seen county flows presented: Anyone others out there? Chicago Area Commuting Patterns and Trends by Ed Christopher and Siim Soot (March 2003) http://www.berwyned.com/papers/co2cochgo.pdf Example of County-to-County Flow Maps for North Carolina prepared by Todd Steiss (August 2003) http://www.TRBcensus.com/articles/nc_flowmaps.pdf Web page on County-to-County Worker Flows in Bay Area and Northern California (Data Released: March 6, 2003). (Updated: March 12, 2003) http://www.mtc.ca.gov/maps_and_data/datamart/census/county2county/ -- Ed Christopher 708-283-3534 (V) 708-574-8131 (cell) FHWA RC-TST-PLN 19900 Governors Dr Olympia Fields, IL 60461 _______________________________________________ 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

17 years, 11 months

[CTPP] Change in Census Bureau contact for CTPP

by phillip.a.salopek＠census.gov

In mid-April, Clara Reschovsky left her position here at the Census Bureau to take a job with the Metropolitan Washington Council of Governments. It has come to our attention, however, that email addressed to her at the Census Bureau is still going through as though it is being delivered normally. Therefore, if anyone has sent Clara email since about April 12, 2006 it is sitting, unread, in her email account. Nanda Srinivasan at FHWA is still the first point of contact for CTPP support, but any future inquiries you would normally have sent to Clara should instead be addressed to me at phillip.a.salopek(a)census.gov. Clara did a terrific job for us here at the Bureau and we were sorry to see her go, but we wish her all the best at MWCOG. If you have a chance to talk to her in her new position, make sure you tell her how much you enjoyed working with her on the CTPP. Thanks. --Phil Salopek

17 years, 11 months

[CTPP] ACS Course Offering

by Ed Christopher

We all know that there are lots of commercial vendors hawking census data products. While I would not like to see this list turn in to a vendor free-for-all I thought this class taught by Cynthia Taeuber was somehow different. FYI... -------- Subject: Online Course: Using the Census's American Community Survey Date: Thu, 04 May 2006 19:36:09 -0400 From: Cynthia Taeuber <cmtaeuber(a)direcway.com> To: cmtaeuber(a)direcway.com I am going to teach a 4-week on-line course about the American Community Survey starting May 19. The announcement from statistics.com, the company that sponsors it, describes the course below. I wrote materials for the course. http://www.statistics.com/content/courses/census/index.html -------- Ed Christopher 708-283-3534 (V) 708-574-8131 (cell) FHWA RC-TST-PLN 19900 Governors Dr Olympia Fields, IL 60461

17 years, 11 months

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CTPP May 2006