This question has probably been asked before, but I don't recall the
answer...
What sort of adjustments do people make with CTPP data, to deal with the
extreme "long-distance" commuters that are actually just "temporarily
re-assigned" workers? This is not an error in the CTPP collection or
summary process, but rather a result of the way the long form questions were
answered.
For example, here is a record that got "expanded" to four people:
-- The Place of Residence is a County in Alaska
-- The Place of Work is a County in Texas (Dallas)
-- The commute time is 20 minutes
What this is saying is that the person isn't really commuting each day from
their home in Alaska, but is instead commuting to a place in Dallas County
from some temporary residence (a hotel, perhaps) within the Dallas-Fort
Worth area.
Such an extreme example is easy to recognize, but what about other examples
which fall into the "not sure" category when it comes to whether a person's
normal place of residence is really the point where they are truly starting
their commute trip? Perhaps a very high "average speed" based on "travel
time" and "straight-line distance" could be used to flag such records?
Ken Cervenka
North Central Texas COG
-----Original Message-----
From: Pheny Smith [mailto:pheny.smith(a)bts.gov]
Sent: Thursday, May 06, 2004 11:04 AM
To: ctpp-news(a)chrispy.net
Cc: Jeff Butler; Deepak Virmani; Cheryl Young
Subject: [CTPP] Release of CTPP Part 3 Flat ASCII files
** High Priority **
Dear CTPP Users,
Thanks to the BTS Transtats team's effort, the preliminary CTPP 2000 Part 3
files are now available for download via the BTS Transtats Website. These
files are in Flat ASCII File format.
The website is: www.bts.gov, Click on Data, then on CTPP 2000.
For questions on the Flat ASCII files, please contact Nanda Srinivasan
(Nanda.srinivasan(a)fhwa.dot.gov) or Clara Reschovsky
(Clara.a.reschovsky(a)census.gov).
For problems on downloading files, please contact Deepak Virmani
(Deepak.virmani(a)bts.gov).
Pheny Smith, Ph. D.
Statistician
Office of Advanced Studies
Bureau of Transportation Statistics
(202) 366-2817
Today the Census Bureau published notice in the Federal Register that it
is requesting public comments on the current and proposed new ACS data
products. This should be especially important to the transportation
planning community especially with the prospect of annual data and that
at this time, there is no guarantee of a future CTPP like product.
Comments to the Docket need to be submitted by July 14, 2004. For a
copy of the text of the Federal Register notice go to
http://www.census.gov/acs/www/product_review/acs_survey/fed_reg.htm
To help users with their review, the Census Bureau has set up a "Current
and Proposed Products Review" website at
http://www.census.gov/acs/www/product_review/
More information about this notice can be found in the ACS Special Alert
at http://www.census.gov/acs/www/Special/Alerts/Latest.htm
--
Ed Christopher
708-283-3534 (V)
708-574-8131 (cell)
FHWA RC-TST-PLN
19900 Governors Dr
Olympia Fields, IL 60461
Andrew:
A year or so ago someone on this list provided a link to a site by the
Bureau of Economic Analysis. It has county-to-county total worker data
for 1970 through 1990:
http://www.bea.doc.gov/bea/regional/reis/jtw/
I checked it and it still works. They apparently haven't yet updated it
to include the Census 2000 data that was released over a year ago....
CP
>>> "Andrew PICKARD" <APICKARD(a)hrpdc.org> 05/06/04 02:20PM >>>
I am looking to find 1980 Census flow data at the county-to-county
level. There seem to be a handful of web sights with historical
Census
data but none with data from Census' recent past. Any help is
appreciated. Thanks!
Andrew Pickard, P.E.
Senior Transportation Engineer
Hampton Roads Planning District Commission
723 Woodlake Drive
Chesapeake, VA 23320
Phone: (757) 420-8300 Fax: (757) 523-4881
E-mail: apickard(a)hrpdc.org
Web: www.hrpdc.org
-------------------------------------------------------
I am looking to find 1980 Census flow data at the county-to-county
level. There seem to be a handful of web sights with historical Census
data but none with data from Census' recent past. Any help is
appreciated. Thanks!
Andrew Pickard, P.E.
Senior Transportation Engineer
Hampton Roads Planning District Commission
723 Woodlake Drive
Chesapeake, VA 23320
Phone: (757) 420-8300 Fax: (757) 523-4881
E-mail: apickard(a)hrpdc.org
Web: www.hrpdc.org
-------------------------------------------------------
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** High Priority **
Dear CTPP Users,
Thanks to the BTS Transtats team's effort, the preliminary CTPP 2000 Part 3 files are now available for download via the BTS Transtats Website. These files are in Flat ASCII File format.
The website is: www.bts.gov, Click on Data, then on CTPP 2000.
For questions on the Flat ASCII files, please contact Nanda Srinivasan (Nanda.srinivasan(a)fhwa.dot.gov) or Clara Reschovsky (Clara.a.reschovsky(a)census.gov).
For problems on downloading files, please contact Deepak Virmani (Deepak.virmani(a)bts.gov).
Pheny Smith, Ph. D.
Statistician
Office of Advanced Studies
Bureau of Transportation Statistics
(202) 366-2817
