Hi! Susan,
Yes, I did and tried refreshing my memory by going through Q29 to Q45 on ACS questionnaire. Still don't have a clear idea about how to define a commuter. Like when we said " Of the 128 million commuters in 2000, almost 100 million were in nonmetropolitan areas...", who were those commuters and how they responded to census (ACS) questionnaire to be categorized as commuters.
Hope this question makes sense to you all.
Thanks!
Juyin
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Gorski, Susan (MDOT)
Sent: Thursday, January 02, 2014 2:51 PM
To: ctpp-news(a)chrispy.net; ctpp-news(a)ryoko.chrispy.net
Subject: Re: [CTPP] What defines a commuter?
Not sure if you read CIA 2013 Brief 2 (http://traveltrends.transportation.org/Documents/B2_CIA_Role%20Overall%20Tr… ) This gives a nice description of the complexities of commuting.
From: ctpp-news-bounces(a)chrispy.net<mailto:ctpp-news-bounces(a)chrispy.net> [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Chen, Ju-Yin (VDOT)
Sent: Thursday, January 02, 2014 2:33 PM
To: ctpp-news(a)ryoko.chrispy.net<mailto:ctpp-news(a)ryoko.chrispy.net>
Subject: [CTPP] What defines a commuter?
Hi! All,
I got an interesting question from our management.
They want to know if we can define a commuter by how many work trips this particular person make during certain period of time (a day, a week or a year).
The simple definition I found online to describe a commuter is "a person who travels some distance to work on a regular basis."
This brings up two basic questions:
1. How do we determine "some distance"?
2. How do we determine "regular basis"?
I could not find a clear definition regarding commuter in Commuting in America III though we talked about commuter population throughout the report.
Any insight on this would be greatly appreciated!
Juyin (roo-een) Chen, AICP
Travel Demand Modeling Coordinator
Virginia Department of Transportation
Transportation & Mobility Planning Division<http://maps.google.com/maps/place?cid=208056989819810995&gl=us&hl=en&cd=1&c…>
P +1-804-225-3564
F +1-804-225-4785
http://www.virginiadot.org/vtm/
Hello Everyone,
Ive gotten started on our long range transportation plan, and one area we have an issue with is Census data. We've got 2010 Census data for our population and household counts, but we will also need the 5-year ACS data of number of households by household size by household income. We would prefer to use 2010 population counts for the base year of the model so we've decided there are two options. We could use the 5-year ACS data for our base model year population and household counts, but that doesn't create a true picture of 2010. The other option is we could mix datasets and proportionately apply characteristics of the 5-year ACS data to the 2010 counts. Can anyone give us some guidance needing to use both datasets on the same project?
Thank you,
Geoff Olson
Transportation Planner
Bi-State Regional Commission
1504 3rd Ave.
P.O. Box 3368
Rock Island, IL 61204
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you can also get veh/household from the profiles on the AASHTO CTPP page. http://download.ctpp.transportation.org/profiles_2012/Transportation_Profil…
Ed C
> On Jan 2, 2014, at 12:42 PM, Weinberger Penelope <pweinberger(a)aashto.org> wrote:
>
> One way is to take aggregate vehicles for an area and divide it by total households for an area. You can get Aggregate Vehicles from B111103 - Aggregate Number of Vehicles Available in Households (1) (Occupied housing units) and Total Households from A112209 - Household size (5) by Number of workers in household (6) (Households) So for Pima County Arizona you get 641035 vehicles and 381880 Households yielding 1.68 Cars per Household. Of course this ignores the MOE.
>
> Penelope Z. Weinberger
> CTPP Program Manager
> AASHTO
> 202-624-3556
> ctpp.transportation.org
>
>
>
>
>
> From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Sulabh Aryal
> Sent: Thursday, January 02, 2014 12:46 PM
> To: ctpp-news(a)chrispy.net
> Subject: [CTPP] No. of vehicles physically located in households.
>
> Hello everyone,
>
> I was locking through CTPP 2006-2010 tables and was wondering which would be the best table to be used to calculate the number of vehicles (autos) physically located in households. Any suggestion would be appreciated.
>
> Thanks,
>
> Sulabh Aryal
> Associate Planner
>
> Richmond Regional Planning District Commission
> 9211 Forest Hill Avenue, Suite 200 Richmond, VA 23235
> Phone: 804.323.2033 3 Fax: 804.323.2025
> saryal(a)richmondregional.org 3 www.richmondregional.org
>
>
>
> _______________________________________________
> ctpp-news mailing list
> ctpp-news(a)ryoko.chrispy.net
> http://ryoko.chrispy.net/mailman/listinfo/ctpp-news
Hi! All,
I got an interesting question from our management.
They want to know if we can define a commuter by how many work trips this particular person make during certain period of time (a day, a week or a year).
The simple definition I found online to describe a commuter is "a person who travels some distance to work on a regular basis."
This brings up two basic questions:
1. How do we determine "some distance"?
2. How do we determine "regular basis"?
I could not find a clear definition regarding commuter in Commuting in America III though we talked about commuter population throughout the report.
Any insight on this would be greatly appreciated!
Juyin (roo-een) Chen, AICP
Travel Demand Modeling Coordinator
Virginia Department of Transportation
Transportation & Mobility Planning Division<http://maps.google.com/maps/place?cid=208056989819810995&gl=us&hl=en&cd=1&c…>
P +1-804-225-3564
F +1-804-225-4785
http://www.virginiadot.org/vtm/
Hi! All,
I got an interesting question from our management.
They want to know if we can define a commuter by how many work trips this particular person make during certain period of time (a day, a week or a year).
The simple definition I found online to describe a commuter is "a person who travels some distance to work on a regular basis."
This brings up two basic questions:
1. How do we determine "some distance"?
2. How do we determine "regular basis"?
I could not find a clear definition regarding commuter in Commuting in America III though we talked about commuter population throughout the report.
Any insight on this would be greatly appreciated!
Juyin (roo-een) Chen, AICP
Travel Demand Modeling Coordinator
Virginia Department of Transportation
Transportation & Mobility Planning Division<http://maps.google.com/maps/place?cid=208056989819810995&gl=us&hl=en&cd=1&c…>
P +1-804-225-3564
F +1-804-225-4785
http://www.virginiadot.org/vtm/
I am not sure what your question is, but I will try to answer it.
The Question in the ACS reads: “How many automobiles, vans and trucks of one-ton capacity or less are kept at home for use by members of this household?” The answer can be 0-1-2-3-4-5, or 6+
There are MANY tables in the CTPP which include this variable, but if you are interested in the AGGREGATE number of vehicles in households, you can use B111103 “Aggregate vehicles in households”. Since it is a B Table, which uses the privacy protected ACS microdataset, there are possibly problems because the weights are adjusted for workers and not households. So, you MIGHT prefer to use a Set A Table instead, such as A111102 which is a univariable distribution of Vehicles Available.
Elaine Murakami
FHWA Office of Planning
206-220-4460 (in Seattle)
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Sulabh Aryal
Sent: Thursday, January 02, 2014 9:46 AM
To: ctpp-news(a)chrispy.net
Subject: [CTPP] No. of vehicles physically located in households.
Hello everyone,
I was locking through CTPP 2006-2010 tables and was wondering which would be the best table to be used to calculate the number of vehicles (autos) physically located in households. Any suggestion would be appreciated.
Thanks,
Sulabh Aryal
Associate Planner
Richmond Regional Planning District Commission
9211 Forest Hill Avenue, Suite 200 Richmond, VA 23235
Phone: 804.323.2033 3 Fax: 804.323.2025
saryal(a)richmondregional.org<mailto:saryal(a)richmondregional.org> 3 www.richmondregional.org<http://www.richmondregional.org>
One way is to take aggregate vehicles for an area and divide it by total households for an area. You can get Aggregate Vehicles from B111103 - Aggregate Number of Vehicles Available in Households (1) (Occupied housing units) and Total Households from A112209 - Household size (5) by Number of workers in household (6) (Households) So for Pima County Arizona you get 641035 vehicles and 381880 Households yielding 1.68 Cars per Household. Of course this ignores the MOE.
Penelope Z. Weinberger
CTPP Program Manager
AASHTO
202-624-3556
ctpp.transportation.org
From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Sulabh Aryal
Sent: Thursday, January 02, 2014 12:46 PM
To: ctpp-news(a)chrispy.net
Subject: [CTPP] No. of vehicles physically located in households.
Hello everyone,
I was locking through CTPP 2006-2010 tables and was wondering which would be the best table to be used to calculate the number of vehicles (autos) physically located in households. Any suggestion would be appreciated.
Thanks,
Sulabh Aryal
Associate Planner
Richmond Regional Planning District Commission
9211 Forest Hill Avenue, Suite 200 Richmond, VA 23235
Phone: 804.323.2033 3 Fax: 804.323.2025
saryal(a)richmondregional.org<mailto:saryal(a)richmondregional.org> 3 www.richmondregional.org<http://www.richmondregional.org>