5 Aug
2021
5 Aug
'21
4:26 p.m.
Thanks for your information. However, the TAZ level ACS data could not be found on its
website (https://data.census.gov/cedsci/advanced). When you said "The data crunching
and table production was done inside the Census Bureau.", did you mean Census Bureau
still processed data at TAZ level and gave it to CTPP but not open to public? I am a bit
confused here because it is said on census.gov that "In the ACS, block groups are the
lowest (smallest) level of geography published. Block group data are only available in the
ACS 5-year data products."
Best,
Xinbo Mi
From: Ed Christopher <edc(a)berwyned.com>
Sent: Thursday, August 5, 2021 3:27 PM
To: CTPP ListServe <ctpp-news(a)mailman.chrispy.net>et>; Mi, Xinbo
<xmi(a)evansvillempo.com>
Subject: [CTPP] Re: CTPP TAZ Data
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1. TAZs were defined by the MPOs and states using basically a census block to TAZ
equivalency. The data crunching and table production was done inside the Census Bureau.
2. This will all depend on what CTPP gets but it will be census geography. I believe the
ask from the Census Bureau is for block group and tract level data, which likely has some
relationship to the TDM tazs, but the Census Bureau disclosure review board needs to
complete their review first before all the table details are know.
On 8/5/2021 2:58 PM, Mi, Xinbo wrote:
Hi,
I am new to the list and I want to post 2 questions:
1. Since CTPP data is based on ACS data and the lowest level of geography of ACS
data is block groups, how was CTPP data generated at TAZ level?
2. Since TAZ level CTPP data will be discontinued, what will be the best practice to
get TAZ level demographic, socioeconomic and housing characteristics data as input layers
to travel demand model?
Thanks!
Best,
Xinbo Mi
Transportation Engineer
Evansville Metropolitan Planning Organization
1NW Martin Luther King Jr. Blvd. Room 316
Evansville, Indiana 47708
Office Main Line 812.436.7833
www.evansvillempo.com<https://linkprotect.cudasvc.com/url?a=http%3a%2f%2…
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