19 Jan
2011
19 Jan
'11
7:01 p.m.
Mark:
I am on the AASHTO CTPP committee, and I can answer part of your
question: You can create your own shape files, you can import them into
the TAZ delineation software for viewing, BUT you cannot submit them
directly to Census as your desired TAZ delineation. Census needs the
delineations from all the MPOs and DOTs from across the land in a single
uniform file format, which is the format of the output of the TAZ
software.
The software will allow you to import your shape files so that you can
construct the TAZs with the shapes from your other software as a
background layer.
Pete Swensson, Senior Planner
Thurston Regional Planning Council
2424 Heritage Ct. SW
Olympia, WA 98502
(360) 741-2530 (direct line)
(360) 956-7575 (main desk)
(360) 956-7815 (fax)
swenssp(a)trpc.org
This e-mail and any attachments are for the use of the addressed
individual. If you have received this e-mail in error, please notify
our systems manager. TRPC has taken responsible precautions to ensure
no viruses are present in this e-mail, however we do not accept
responsibility for loss or damage arising from the use of this e-mail or
attachments.
From: ctpp-news-bounces(a)chrispy.net
[mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Flinner, Mark (DOT)
Sent: Wednesday, January 19, 2011 2:46 PM
To: ctpp-news(a)chrispy.net
Cc: jonathan ehrlich; Tom Faella; mark.filipi(a)metc.state.mn.us
Subject: [CTPP] RE: TAZ software training vs. not using the TAZ software
Is there anything to prevent an MPO from creating their own shape files
for Census TAZ or Census TAD boundary/ Block Equivalencies assuming they
have already obtained 2010 TIGER boundary sets?
Also, we am planning a Census TAZ delineation workshop on February 7th
to discuss issues associated with nesting model TAZs within Census TAZs
given the relatively low populations of most of our MPO model TAZs. I
had hoped to acquaint people with the software environment prior to the
training sessions at the end of the month but understand that we are not
a testing state. I also expect a discussion of the complexities of
obtaining CTPP special tabulation data then needing to reallocate the
data to model TAZ geographies. Is there anything you can share with us
to assist in these areas? I have also received a question of what other
uses (besides the one-time use of obtaining CTPP data) the census TAZ
and TAD geographies have beyond the census year. LEHD On the Map comes
to mind... other uses?
Thank you.
From: ctpp-news-bounces(a)chrispy.net
[mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of
Elaine.Murakami(a)dot.gov
Sent: Thursday, January 13, 2011 5:25 PM
To: ctpp-news(a)chrispy.net
Subject: [CTPP] TAZ software training: WEB ONLY scheduled for Friday,
Feb 25 and Monday, Feb 28
As you know, TAZ delineation by State DOTs and MPOs will occur very
soon, with software distribution in March/early April and files returned
to the CB by mid-July. The software is being tested by volunteer State
DOTs and MPOs starting from Friday, Jan 14 thru Feb 2. Thank you to all
the volunteers! We do not need any additional software testers.
We have two web training events scheduled. REGISTRATION IS REQUIRED.
Please make sure that you capture the full http:// address, in case the
listserv breaks it up. You need the address including webconfid=22433,
or webconfid=21975
I have reserved 300 spaces for each day, so there should be enough room
for everyone. If you are unavailable on those days, the sessions will
be recorded and available for later viewing. The same training will
occur on each day, so please sign up for only one.
The web meeting software has been upgraded, therefore, the email with
the confirmation of your registration will have a link to check the
functionality on your computer.
Friday, 2/25/2011, from 10 a.m. - noon EASTERN:
Registration URL:
https://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_re
g.aspx?webconfid=22433
<https://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_r
eg.aspx?webconfid=22433>
Monday, 2/28/2011, from 2 - 4 p.m. EASTERN:
Registration URL:
https://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_re
g.aspx?webconfid=21975
<https://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_r
eg.aspx?webconfid=21975>
Question: why is the time to do this only 3 months?
Answer: For the TAZ and TAD delineation, it is important to be able to
use the TIGER files with the 2010 geography and 2010 population counts.
The 2010 population counts will be released to the public on a flow
basis starting in March 2011, so we have to wait until these data are
available to begin TAZ and TAD delineation. If the 5-year CTPP using
2006-2010 ACS records will be tabulated for TAZs and TADs, the TAZ and
TAD delineations need to be completed quickly and returned to the CB
Geography Division (GEO) 3 months after the agencies receive their files
(no later than July 2011).
This provides GEO with sufficient time to QC the submissions, produce
the necessary files so that ACS records will get TAZ/TAD identifiers,
and create TIGER/Line shapefiles for TAZ/TAD geography. If the TAZs
and TADs
are not delineated within this time frame, the CTPP tabulation could be
delayed for another year, that is, Fall 2013.
Question: are there strict thresholds on either residential population
or workplace population?
Answer: No. The software will give a warning message, but will still
allow you to define TAZs below the recommended "threshold." (The FAQ
will include more discussion about this topic.)
We are working on an FAQ document on TAZs and will post it on the AASHTO
CTPP page.
http://ctpp.transportation.org/Pages/taz.aspx
<http://ctpp.transportation.org/Pages/taz.aspx>
Elaine Murakami
FHWA Office of Planning
206-220-4460
19 Jan
19 Jan
7:51 p.m.
New subject: [CTPP] RE: TAZ software training vs. not using the TAZ software
Mark et al:
I may have responded hastily. Elaine Murakami has pointed out correctly
that what Census most needs is a correspondence table that tells them
which Census blocks to assign to which TAZs (i.e., a "Block Equivalency
File" or BEF). The BEFs for the TAZ and TAD plans are the outputs of
the TAZ delineation software that go to Census. So maybe you can send
in a BEF directly generated from your GIS (look at all these acronyms!).
In reviewing the draft software, I see that there is an option to import
your own BEFs generated from your own GIS in a choice of formats (as a
text file, or dbf, etc.,) and then to use the TAZ software to check it
for overlapping TAZs (a block gets counted in more than one TAZ), gaps
where a block wasn't included in any TAZ, and various other tests. So
even if you do most of your analysis outside the TAZ delineation
software, there would still be some value in using it to do some quality
control checks on the work.
Pete Swensson, Senior Planner
Thurston Regional Planning Council
2424 Heritage Ct. SW
Olympia, WA 98502
(360) 741-2530 (direct line)
(360) 956-7575 (main desk)
(360) 956-7815 (fax)
swenssp(a)trpc.org
This e-mail and any attachments are for the use of the addressed
individual. If you have received this e-mail in error, please notify
our systems manager. TRPC has taken responsible precautions to ensure
no viruses are present in this e-mail, however we do not accept
responsibility for loss or damage arising from the use of this e-mail or
attachments.
From: ctpp-news-bounces(a)chrispy.net
[mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Pete Swensson
Sent: Wednesday, January 19, 2011 4:01 PM
To: ctpp-news(a)chrispy.net
Subject: RE: [CTPP] RE: TAZ software training vs. not using the TAZ
software
Mark:
I am on the AASHTO CTPP committee, and I can answer part of your
question: You can create your own shape files, you can import them into
the TAZ delineation software for viewing, BUT you cannot submit them
directly to Census as your desired TAZ delineation. Census needs the
delineations from all the MPOs and DOTs from across the land in a single
uniform file format, which is the format of the output of the TAZ
software.
The software will allow you to import your shape files so that you can
construct the TAZs with the shapes from your other software as a
background layer.
Pete Swensson, Senior Planner
Thurston Regional Planning Council
2424 Heritage Ct. SW
Olympia, WA 98502
(360) 741-2530 (direct line)
(360) 956-7575 (main desk)
(360) 956-7815 (fax)
swenssp(a)trpc.org
This e-mail and any attachments are for the use of the addressed
individual. If you have received this e-mail in error, please notify
our systems manager. TRPC has taken responsible precautions to ensure
no viruses are present in this e-mail, however we do not accept
responsibility for loss or damage arising from the use of this e-mail or
attachments.
From: ctpp-news-bounces(a)chrispy.net
[mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Flinner, Mark (DOT)
Sent: Wednesday, January 19, 2011 2:46 PM
To: ctpp-news(a)chrispy.net
Cc: jonathan ehrlich; Tom Faella; mark.filipi(a)metc.state.mn.us
Subject: [CTPP] RE: TAZ software training vs. not using the TAZ software
Is there anything to prevent an MPO from creating their own shape files
for Census TAZ or Census TAD boundary/ Block Equivalencies assuming they
have already obtained 2010 TIGER boundary sets?
Also, we am planning a Census TAZ delineation workshop on February 7th
to discuss issues associated with nesting model TAZs within Census TAZs
given the relatively low populations of most of our MPO model TAZs. I
had hoped to acquaint people with the software environment prior to the
training sessions at the end of the month but understand that we are not
a testing state. I also expect a discussion of the complexities of
obtaining CTPP special tabulation data then needing to reallocate the
data to model TAZ geographies. Is there anything you can share with us
to assist in these areas? I have also received a question of what other
uses (besides the one-time use of obtaining CTPP data) the census TAZ
and TAD geographies have beyond the census year. LEHD On the Map comes
to mind... other uses?
Thank you.
From: ctpp-news-bounces(a)chrispy.net
[mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of
Elaine.Murakami(a)dot.gov
Sent: Thursday, January 13, 2011 5:25 PM
To: ctpp-news(a)chrispy.net
Subject: [CTPP] TAZ software training: WEB ONLY scheduled for Friday,
Feb 25 and Monday, Feb 28
As you know, TAZ delineation by State DOTs and MPOs will occur very
soon, with software distribution in March/early April and files returned
to the CB by mid-July. The software is being tested by volunteer State
DOTs and MPOs starting from Friday, Jan 14 thru Feb 2. Thank you to all
the volunteers! We do not need any additional software testers.
We have two web training events scheduled. REGISTRATION IS REQUIRED.
Please make sure that you capture the full http:// address, in case the
listserv breaks it up. You need the address including webconfid=22433,
or webconfid=21975
I have reserved 300 spaces for each day, so there should be enough room
for everyone. If you are unavailable on those days, the sessions will
be recorded and available for later viewing. The same training will
occur on each day, so please sign up for only one.
The web meeting software has been upgraded, therefore, the email with
the confirmation of your registration will have a link to check the
functionality on your computer.
Friday, 2/25/2011, from 10 a.m. - noon EASTERN:
Registration URL:
https://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_re
g.aspx?webconfid=22433
<https://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_r
eg.aspx?webconfid=22433>
Monday, 2/28/2011, from 2 - 4 p.m. EASTERN:
Registration URL:
https://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_re
g.aspx?webconfid=21975
<https://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_r
eg.aspx?webconfid=21975>
Question: why is the time to do this only 3 months?
Answer: For the TAZ and TAD delineation, it is important to be able to
use the TIGER files with the 2010 geography and 2010 population counts.
The 2010 population counts will be released to the public on a flow
basis starting in March 2011, so we have to wait until these data are
available to begin TAZ and TAD delineation. If the 5-year CTPP using
2006-2010 ACS records will be tabulated for TAZs and TADs, the TAZ and
TAD delineations need to be completed quickly and returned to the CB
Geography Division (GEO) 3 months after the agencies receive their files
(no later than July 2011).
This provides GEO with sufficient time to QC the submissions, produce
the necessary files so that ACS records will get TAZ/TAD identifiers,
and create TIGER/Line shapefiles for TAZ/TAD geography. If the TAZs
and TADs
are not delineated within this time frame, the CTPP tabulation could be
delayed for another year, that is, Fall 2013.
Question: are there strict thresholds on either residential population
or workplace population?
Answer: No. The software will give a warning message, but will still
allow you to define TAZs below the recommended "threshold." (The FAQ
will include more discussion about this topic.)
We are working on an FAQ document on TAZs and will post it on the AASHTO
CTPP page.
http://ctpp.transportation.org/Pages/taz.aspx
<http://ctpp.transportation.org/Pages/taz.aspx>
Elaine Murakami
FHWA Office of Planning
206-220-4460
20 Jan
20 Jan
9:14 a.m.
New subject: [CTPP] RE: TAZ software training vs. not using the TAZ software
Pete is correct in all accounts, except that the Census Bureau Geography
Division requests that all 2010 TAZ and TAD delineation files submitted to
the Bureau be output from the TAZ delineation software (TAZ MTPS). This is
to ensure that all TAZ and TAD criteria are met, and that the files
submitted to the Bureau contain a standardized format and content.
To clarify: If you've created block equivalency files (BEFs) from the 2010
TIGER/Line shapefiles, then this process should be relatively quick and
simple: (1) import the BEF (s) in the TAZ MTPS, (2) review the TAZ/TAD
delineations, (3) run the verification checks (includes checks to identify
issues in code uniqueness, completeness, TAZs/TAD nesting, and other
possible errors/anomalies), (4) create output files (includes shapefiles
and BEFs) to submit to the Bureau. If you've delineated your TAZs and/or
TADs in a GIS and have the delineations in shapefiles or another GIS file
format (but have not created BEFs), you can (1) add your spatial files as a
layer in the TAZ MTPS, (2) interactively aggregate census blocks/block
groups/census tracts to create your 2010 TAZs (and then aggregate 2010 TAZs
to create your 2010 TADs), (3 run the verification checks, and (4) create
output files to submit to the Bureau.
April Avnayim
Supervisory Geographer
Geographic Standards and Criteria Branch
Geography Division
U.S. Census Bureau
(V) 301-763-9100
(F) 301-763-4710
|------------>
| From: |
|------------>
----------------------------------------------------------------------------------------------------------------------------------------|
|"Pete Swensson" <swenssp(a)trpc.org>
|
----------------------------------------------------------------------------------------------------------------------------------------|
|------------>
| To: |
|------------>
----------------------------------------------------------------------------------------------------------------------------------------|
|<ctpp-news(a)chrispy.net>
|
----------------------------------------------------------------------------------------------------------------------------------------|
|------------>
| Date: |
|------------>
----------------------------------------------------------------------------------------------------------------------------------------|
|01/19/2011 08:09 PM
|
----------------------------------------------------------------------------------------------------------------------------------------|
|------------>
| Subject: |
|------------>
----------------------------------------------------------------------------------------------------------------------------------------|
|RE: [CTPP] RE: TAZ software training vs. not using the TAZ software
|
----------------------------------------------------------------------------------------------------------------------------------------|
|------------>
| Sent by: |
|------------>
----------------------------------------------------------------------------------------------------------------------------------------|
|ctpp-news-bounces(a)chrispy.net
|
----------------------------------------------------------------------------------------------------------------------------------------|
Mark et al:
I may have responded hastily. Elaine Murakami has pointed out correctly
that what Census most needs is a correspondence table that tells them which
Census blocks to assign to which TAZs (i.e., a “Block Equivalency File” or
BEF). The BEFs for the TAZ and TAD plans are the outputs of the TAZ
delineation software that go to Census. So maybe you can send in a BEF
directly generated from your GIS (look at all these acronyms!).
In reviewing the draft software, I see that there is an option to import
your own BEFs generated from your own GIS in a choice of formats (as a text
file, or dbf, etc.,) and then to use the TAZ software to check it for
overlapping TAZs (a block gets counted in more than one TAZ), gaps where a
block wasn’t included in any TAZ, and various other tests. So even if you
do most of your analysis outside the TAZ delineation software, there would
still be some value in using it to do some quality control checks on the
work.
Pete Swensson, Senior Planner
Thurston Regional Planning Council
2424 Heritage Ct. SW
Olympia, WA 98502
(360) 741-2530 (direct line)
(360) 956-7575 (main desk)
(360) 956-7815 (fax)
swenssp(a)trpc.org
This e-mail and any attachments are for the use of the addressed
individual. If you have received this e-mail in error, please notify our
systems manager. TRPC has taken responsible precautions to ensure no
viruses are present in this e-mail, however we do not accept responsibility
for loss or damage arising from the use of this e-mail or attachments.
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net]
On Behalf Of Pete Swensson
Sent: Wednesday, January 19, 2011 4:01 PM
To: ctpp-news(a)chrispy.net
Subject: RE: [CTPP] RE: TAZ software training vs. not using the TAZ
software
Mark:
I am on the AASHTO CTPP committee, and I can answer part of your question:
You can create your own shape files, you can import them into the TAZ
delineation software for viewing, BUT you cannot submit them directly to
Census as your desired TAZ delineation. Census needs the delineations from
all the MPOs and DOTs from across the land in a single uniform file format,
which is the format of the output of the TAZ software.
The software will allow you to import your shape files so that you can
construct the TAZs with the shapes from your other software as a background
layer.
Pete Swensson, Senior Planner
Thurston Regional Planning Council
2424 Heritage Ct. SW
Olympia, WA 98502
(360) 741-2530 (direct line)
(360) 956-7575 (main desk)
(360) 956-7815 (fax)
swenssp(a)trpc.org
This e-mail and any attachments are for the use of the addressed
individual. If you have received this e-mail in error, please notify our
systems manager. TRPC has taken responsible precautions to ensure no
viruses are present in this e-mail, however we do not accept responsibility
for loss or damage arising from the use of this e-mail or attachments.
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net]
On Behalf Of Flinner, Mark (DOT)
Sent: Wednesday, January 19, 2011 2:46 PM
To: ctpp-news(a)chrispy.net
Cc: jonathan ehrlich; Tom Faella; mark.filipi(a)metc.state.mn.us
Subject: [CTPP] RE: TAZ software training vs. not using the TAZ software
Is there anything to prevent an MPO from creating their own shape files for
Census TAZ or Census TAD boundary/ Block Equivalencies assuming they have
already obtained 2010 TIGER boundary sets?
Also, we am planning a Census TAZ delineation workshop on February 7th to
discuss issues associated with nesting model TAZs within Census TAZs given
the relatively low populations of most of our MPO model TAZs. I had hoped
to acquaint people with the software environment prior to the training
sessions at the end of the month but understand that we are not a testing
state. I also expect a discussion of the complexities of obtaining CTPP
special tabulation data then needing to reallocate the data to model TAZ
geographies. Is there anything you can share with us to assist in these
areas? I have also received a question of what other uses (besides the
one-time use of obtaining CTPP data) the census TAZ and TAD geographies
have beyond the census year. LEHD On the Map comes to mind… other uses?
Thank you.
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net]
On Behalf Of Elaine.Murakami(a)dot.gov
Sent: Thursday, January 13, 2011 5:25 PM
To: ctpp-news(a)chrispy.net
Subject: [CTPP] TAZ software training: WEB ONLY scheduled for Friday, Feb
25 and Monday, Feb 28
As you know, TAZ delineation by State DOTs and MPOs will occur very soon,
with software distribution in March/early April and files returned to the
CB by mid-July. The software is being tested by volunteer State DOTs and
MPOs starting from Friday, Jan 14 thru Feb 2. Thank you to all the
volunteers! We do not need any additional software testers.
We have two web training events scheduled. REGISTRATION IS REQUIRED.
Please make sure that you capture the full http:// address, in case the
listserv breaks it up. You need the address including webconfid=22433, or
webconfid=21975
I have reserved 300 spaces for each day, so there should be enough room for
everyone. If you are unavailable on those days, the sessions will be
recorded and available for later viewing. The same training will occur on
each day, so please sign up for only one.
The web meeting software has been upgraded, therefore, the email with the
confirmation of your registration will have a link to check the
functionality on your computer.
Friday, 2/25/2011, from 10 a.m. – noon EASTERN:
Registration URL:
https://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_reg.a…
Monday, 2/28/2011, from 2 - 4 p.m. EASTERN:
Registration URL:
https://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_reg.a…
Question: why is the time to do this only 3 months?
Answer: For the TAZ and TAD delineation, it is important to be able to use
the TIGER files with the 2010 geography and 2010 population counts. The
2010 population counts will be released to the public on a flow basis
starting in March 2011, so we have to wait until these data are available
to begin TAZ and TAD delineation. If the 5-year CTPP using 2006-2010 ACS
records will be tabulated for TAZs and TADs, the TAZ and TAD delineations
need to be completed quickly and returned to the CB Geography Division
(GEO) 3 months after the agencies receive their files (no later than July
2011).
This provides GEO with sufficient time to QC the submissions, produce the
necessary files so that ACS records will get TAZ/TAD identifiers, and
create TIGER/Line shapefiles for TAZ/TAD geography. If the TAZs and TADs
are not delineated within this time frame, the CTPP tabulation could be
delayed for another year, that is, Fall 2013.
Question: are there strict thresholds on either residential population or
workplace population?
Answer: No. The software will give a warning message, but will still
allow you to define TAZs below the recommended “threshold.” (The FAQ will
include more discussion about this topic.)
We are working on an FAQ document on TAZs and will post it on the AASHTO
CTPP page.
http://ctpp.transportation.org/Pages/taz.aspx
Elaine Murakami
FHWA Office of Planning
206-220-4460 _______________________________________________
ctpp-news mailing list
ctpp-news(a)chrispy.net
http://www.chrispy.net/mailman/listinfo/ctpp-news
12:46 p.m.
New subject: [CTPP] RE: TAZ software training vs. not using the TAZ software
Thank you for that valuable insight. Importing BEFs should be a workable solution.
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf
Of Pete Swensson
Sent: Wednesday, January 19, 2011 6:51 PM
To: ctpp-news(a)chrispy.net
Subject: RE: [CTPP] RE: TAZ software training vs. not using the TAZ software
Mark et al:
I may have responded hastily. Elaine Murakami has pointed out correctly that what Census
most needs is a correspondence table that tells them which Census blocks to assign to
which TAZs (i.e., a "Block Equivalency File" or BEF). The BEFs for the TAZ and
TAD plans are the outputs of the TAZ delineation software that go to Census. So maybe you
can send in a BEF directly generated from your GIS (look at all these acronyms!).
In reviewing the draft software, I see that there is an option to import your own BEFs
generated from your own GIS in a choice of formats (as a text file, or dbf, etc.,) and
then to use the TAZ software to check it for overlapping TAZs (a block gets counted in
more than one TAZ), gaps where a block wasn't included in any TAZ, and various other
tests. So even if you do most of your analysis outside the TAZ delineation software,
there would still be some value in using it to do some quality control checks on the
work.
Pete Swensson, Senior Planner
Thurston Regional Planning Council
2424 Heritage Ct. SW
Olympia, WA 98502
(360) 741-2530 (direct line)
(360) 956-7575 (main desk)
(360) 956-7815 (fax)
swenssp(a)trpc.org<mailto:swenssp(a)trpc.org>
This e-mail and any attachments are for the use of the addressed individual. If you have
received this e-mail in error, please notify our systems manager. TRPC has taken
responsible precautions to ensure no viruses are present in this e-mail, however we do not
accept responsibility for loss or damage arising from the use of this e-mail or
attachments.
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf
Of Pete Swensson
Sent: Wednesday, January 19, 2011 4:01 PM
To: ctpp-news(a)chrispy.net
Subject: RE: [CTPP] RE: TAZ software training vs. not using the TAZ software
Mark:
I am on the AASHTO CTPP committee, and I can answer part of your question: You can create
your own shape files, you can import them into the TAZ delineation software for viewing,
BUT you cannot submit them directly to Census as your desired TAZ delineation. Census
needs the delineations from all the MPOs and DOTs from across the land in a single uniform
file format, which is the format of the output of the TAZ software.
The software will allow you to import your shape files so that you can construct the TAZs
with the shapes from your other software as a background layer.
Pete Swensson, Senior Planner
Thurston Regional Planning Council
2424 Heritage Ct. SW
Olympia, WA 98502
(360) 741-2530 (direct line)
(360) 956-7575 (main desk)
(360) 956-7815 (fax)
swenssp(a)trpc.org<mailto:swenssp(a)trpc.org>
This e-mail and any attachments are for the use of the addressed individual. If you have
received this e-mail in error, please notify our systems manager. TRPC has taken
responsible precautions to ensure no viruses are present in this e-mail, however we do not
accept responsibility for loss or damage arising from the use of this e-mail or
attachments.
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf
Of Flinner, Mark (DOT)
Sent: Wednesday, January 19, 2011 2:46 PM
To: ctpp-news(a)chrispy.net
Cc: jonathan ehrlich; Tom Faella; mark.filipi(a)metc.state.mn.us
Subject: [CTPP] RE: TAZ software training vs. not using the TAZ software
Is there anything to prevent an MPO from creating their own shape files for Census TAZ or
Census TAD boundary/ Block Equivalencies assuming they have already obtained 2010 TIGER
boundary sets?
Also, we am planning a Census TAZ delineation workshop on February 7th to discuss issues
associated with nesting model TAZs within Census TAZs given the relatively low populations
of most of our MPO model TAZs. I had hoped to acquaint people with the software
environment prior to the training sessions at the end of the month but understand that we
are not a testing state. I also expect a discussion of the complexities of obtaining
CTPP special tabulation data then needing to reallocate the data to model TAZ geographies.
Is there anything you can share with us to assist in these areas? I have also received a
question of what other uses (besides the one-time use of obtaining CTPP data) the census
TAZ and TAD geographies have beyond the census year. LEHD On the Map comes to mind...
other uses?
Thank you.
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf
Of Elaine.Murakami(a)dot.gov
Sent: Thursday, January 13, 2011 5:25 PM
To: ctpp-news(a)chrispy.net
Subject: [CTPP] TAZ software training: WEB ONLY scheduled for Friday, Feb 25 and Monday,
Feb 28
As you know, TAZ delineation by State DOTs and MPOs will occur very soon, with software
distribution in March/early April and files returned to the CB by mid-July. The software
is being tested by volunteer State DOTs and MPOs starting from Friday, Jan 14 thru Feb 2.
Thank you to all the volunteers! We do not need any additional software testers.
We have two web training events scheduled. REGISTRATION IS REQUIRED. Please make sure
that you capture the full http:// address, in case the listserv breaks it up. You need
the address including webconfid=22433, or webconfid=21975
I have reserved 300 spaces for each day, so there should be enough room for everyone. If
you are unavailable on those days, the sessions will be recorded and available for later
viewing. The same training will occur on each day, so please sign up for only one.
The web meeting software has been upgraded, therefore, the email with the confirmation of
your registration will have a link to check the functionality on your computer.
Friday, 2/25/2011, from 10 a.m. - noon EASTERN:
Registration URL:
https://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_reg.a…
Monday, 2/28/2011, from 2 - 4 p.m. EASTERN:
Registration URL:
https://www.nhi.fhwa.dot.gov/resources/webconference/web_conf_learner_reg.a…
Question: why is the time to do this only 3 months?
Answer: For the TAZ and TAD delineation, it is important to be able to use the TIGER
files with the 2010 geography and 2010 population counts. The 2010 population counts will
be released to the public on a flow basis starting in March 2011, so we have to wait until
these data are available to begin TAZ and TAD delineation. If the 5-year CTPP using
2006-2010 ACS records will be tabulated for TAZs and TADs, the TAZ and TAD delineations
need to be completed quickly and returned to the CB Geography Division (GEO) 3 months
after the agencies receive their files (no later than July 2011).
This provides GEO with sufficient time to QC the submissions, produce the necessary files
so that ACS records will get TAZ/TAD identifiers, and create TIGER/Line shapefiles for
TAZ/TAD geography. If the TAZs and TADs
are not delineated within this time frame, the CTPP tabulation could be delayed for
another year, that is, Fall 2013.
Question: are there strict thresholds on either residential population or workplace
population?
Answer: No. The software will give a warning message, but will still allow you to define
TAZs below the recommended "threshold." (The FAQ will include more discussion
about this topic.)
We are working on an FAQ document on TAZs and will post it on the AASHTO CTPP page.
http://ctpp.transportation.org/Pages/taz.aspx
Elaine Murakami
FHWA Office of Planning
206-220-4460
5309
days inactive
5309
days old
ctpp@listserv.transportation.org
3 comments
3 participants
participants (3)
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april.l.avnayim＠census.gov -
Flinner -
Pete Swensson