As Liang said, the next CTPP is due in mid 2013.  It will be based on five year ACS from 2006 – 2010 and include small area data. 


In answer to the larger question; the CTPP program at AASHTO was recently transformed to an ongoing technical services program.  As you rightly point out, this follows the change at CB to an ongoing survey methodology.  The CTPP is historically user directed and wishes to continue to be so.  So I have two things to throw out there:

                One, please share the value of the program with your decision makers – when we come for funding, help them get to yes!

                Two, please let me know how you have used the three year data and if it is useful to have along with the planned five year data – the difference between the sets is the three year is more frequent, while the five year covers all geography.




Penelope Z. Weinberger

CTPP Program Manager






From: [] On Behalf Of Estersohn Dan
Sent: Sunday, February 10, 2013 9:55 PM
Subject: [CTPP] County Commuting Flows


Is there any information about production of the CTTP or the county-to-county commuting flows more than once every ten years?  Since they are based on the annual ACS there is an opportunity for more frequent updates than in the past.  What are the current plans? 


Dan Estersohn

Senior Demographer

    Arbitron Inc

    9705 Patuxent Woods Drive

    Columbia, MD  21046