Hi John, and everyone else—

1.  If you need a SHORT extension to submitting your TAZ and TAD boundaries, please contact the Census Bureau Geography Staff IMMEDIATELY.  301-763-1099  email:  geo.taz.list@census.gov

2. What if your TADs have less than 20,000 residential population?  The goal is to define a geographic unit that will pass the Census Bureau’s 3-year tabulation geography threshold (20,000 population).  This way, after the 2006-2010 (5 year) CTPP is delivered to AASHTO, there is a potential to request another 3-year CTPP tabulation sometime in the future using TAD.  Right now, the geographic unit in the 3-year CTPP is limited to PUMA, County and Place with 20,000 population or more.  This is not very useful for large cities. 

Elaine Murakami

FHWA Office of Planning

206-220-4460

From: ctpp-news-bounces@chrispy.net [mailto:ctpp-news-bounces@chrispy.net] On Behalf Of John M. Sharp - ACOG
Sent: Tuesday, June 28, 2011 10:37 AM
To: ctpp-news@chrispy.net
Subject: [CTPP] RE: TAZ delineation update

Being a little slow on the TAZs.

However, a question on the TADs. What do we lose (data wise) if we have some TADs that total only 15,000, rather than the 20,000?

Thanks,

John

From: ctpp-news-bounces@chrispy.net [mailto:ctpp-news-bounces@chrispy.net] On Behalf Of Elaine.Murakami@dot.gov
Sent: Thursday, June 16, 2011 2:49 PM
To: ctpp-news@chrispy.net
Subject: [CTPP] TAZ delineation update

Over 100 agencies have ALREADY submitted their files to the Census Bureau Geography Division, with at least 10 agencies submitting files today (June 16). 

The CB GEO staff have found that the TAZ files look pretty good, and although there are some TAZs that look “too small”  these are often in areas with parks or water areas.  They also said that the TADs look VERY good, with very good adherence to the 20,000 population threshold.   

Thank you to everyone!  I know the rest of you who are participating in the program are working very hard to complete this task.  Getting the TAZ and TAD into Census TIGER is one step for the CTPP 5-year tabulation.  This tabulation will use ACS records from 2006-2010.    AASHTO is expected to submit the 5-year table list to the Census Bureau’s Disclosure Review Board this July.

Re: TAZ, don’t call me J, please call the Census Bureau Geography Division at 301-763-1099.  Email:  geo.taz.list@census.gov

Elaine Murakami

FHWA Office of Planning

206-220-4460