[CTPP] Memo to Census Bureau regarding delineation business rules

[Ed Christopher]

I just have a few questions that I am sure others might have.

1. In section III A it says that "These (TAZs) must have an estimated 
population threshold of 1,200 resident population, and with the ultimate 
lower limit being at 600."  In section III B the document goes on to say 
that the 600 minimum is only a suggestion. Does this mean that TAZs can 
be smaller than 600 but not larger than 1,200.  I am not sure what it 
means  when it says TAZs MUST have an estimated population of 1,200.

2. Regarding the TADs will 5-year CTPP tables be produced for this level 
of geography?

3.  Will TADs have to nest within counties and conform to county 
boundaries like TAZs?  What will happen to a TAD in counties that are 
less than 20,000 residents.

Weinberger, Penelope wrote:
> Hi All,
> 
>  
> 
> The Census Bureau asked us to refine this document to help them with 
> their software development effort.  There was a three step process and 
> this is step two.  Step three will be the formal version of the attached 
> memo, due to Census Bureau in early 2010.  At this time we are seeking 
> input on this memo for the formal version.  *Please reply directly to me 
> with your comments*. 
> 
>  
> 
> *Please reply by January 8^th , 2010*
> 
> * *
> 
> Thanks!
> 
>  
> 
> Penelope Weinberger
> 
> CTPP Program Manager
> 
> AASHTO
> 
> 202-624-3556
> 
> http://ctpp.transportation.org/home/default.htm 
> <http://www.transportation.org>
> 
>  
> 
> It's just as bad to not make a plan as to blindly follow the one you 
> already have.
> 
>  
> 
> 
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