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Title:

Including Transit-Using Households in Travel Surveys by Focusing on Zero-Vehicle Households

Accession Number:

01045170

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

The Maricopa Association of Governments (MAG) recently completed a 48-hour household travel survey of Phoenix area residents in December 2001. As part of the study design, one objective of this study was to capture sufficient transit trips in the random sample for modeling purposes. In order to more accurately model transit usage in the Phoenix region and guide how to accomplish this objective, transportation planners at MAG reviewed on-board data and determined that the most notably characteristic of on-board users was that they represented zero-vehicle households. Therefore MAG developed a sampling plan that included an over-sampling of zero-vehicle households in the region to capture sufficient transit users in the random sample. The reliance on zero-vehicle households as proxies for transit-using households is not new to household travel survey sampling designs. Depending on the geography and transit-ridership base, this may be an appropriate method. Alternative methods include transit-intercepts (either conducting the survey in-person at the stop as conducted in Anchorage, AK or obtaining contact information for later recruitment via the telephone as conducted in the Los Angeles region) and geographic sampling based on transit ridership residential patterns vis-à-vis transit service maps (as implemented in Pittsburgh). The main issue in determining the correct method to use is dependent upon the mix of choice vs. captive transit riders - captive riders tend to be lower income and have a lower incidence of in-home telephone service. If the system is mainly comprised of captive riders, the low incidence of in-home telephone service will exclude this important segment of the population from the household travel survey's telephone-based sample. The purpose of this paper is to investigate household travel survey data gathered in the 2001 Maricopa County (Phoenix) Household Travel Survey and compare/contrast demographics and travel characteristics of both zero-vehicle and transit-using households (using the general population as a guide). Specifically, data will be reviewed to determine if sufficient numbers of transit-using households were included in the survey. A secondary purpose is to investigate the demographic and travel characteristics of the transit-users included in the random telephone survey to determine whether they were included in the sample due as a result of the zero-vehicle oversample. Finally, the demographic characteristics of the transit-using households captured through the telephone-based sample will be compared to on-board survey demographics to determine how well the survey households mirror on-board survey respondents.

Monograph Accession #:

01045220

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Bricka, Stacey
Korepella, Ratna

Pagination:

8p

Publication Date:

2002

Conference:

Eighth National Conference on Transportation Planning for Small and Medium-Sized Communities

Location: Cincinnatti OH, United States
Date: 2002-9-18 to 2002-9-20
Sponsors: Transportation Research Board

Media Type:

CD-ROM

Uncontrolled Terms:

Geographic Terms:

Subject Areas:

Passenger Transportation; Planning and Forecasting; Public Transportation; Society

Files:

TRIS, TRB

Created Date:

Mar 14 2007 1:26PM

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