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@berwyned.com>
Sent: Thursday, August 5, 2021 3:27 PM
To: CTPP ListServe <ctpp-news@mailman.chrispy.net>; Mi, Xinbo <xmi@evansvillempo.com>
Subject: [CTPP] Re: CTPP TAZ Data

 

**** This is an EXTERNAL email. Exercise caution. DO NOT open attachments or click links from unknown senders or unexpected email. ****

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

<image001.jpg>

 

_______________________________________________

ctpp-news mailing list -- ctpp-news@mailman.chrispy.net

To unsubscribe send an email to ctpp-news-leave@mailman.chrispy.net

-- 

Ed Christopher

Transportation Planning Consultant

708-269-5237

_______________________________________________
ctpp-news mailing list -- ctpp-news@mailman.chrispy.net
To unsubscribe send an email to ctpp-news-leave@mailman.chrispy.net