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@chrispy.net [mailto:ctpp-news-bounces@chrispy.net] On Behalf Of Sulabh Aryal
Sent: Thursday, January 02, 2014 12:46 PM
To: ctpp-news@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@richmondregional.org 3 www.richmondregional.org