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@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@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
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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
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
