Estimating Trip Generation of Elderly and Disabled People

Abstract

The aging of populations has implications for trip-making behavior and the demand for special transport services. The London Area Travel Survey 2001 is analyzed to establish the trip-making characteristics of elderly and disabled people. Ordinal probit models are fitted for all trips and for trips by four purposes (work, shopping, personal business, and recreational), with daily trip frequency as the latent variable. A log-linear model is used to analyze trip length. A distinction must be made between young disabled, younger elderly, and older elderly people. Retired people initially tend to make more trips, but as they become older and disabilities intervene, trip making tails off. Household structure, income, car ownership, possession of a driver's license, difficulty walking, and other disabilities are found to affect trip frequency and length to a greater or lesser extent.

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References

Schmöcker

J.-D.

, Quddus

M. A.

, Noland

R. B.

, and Bell

M. G. H.

. Transport Mode Choice of the Elderly and Disabled in London. Presented at 84th Annual Meeting of the Transportation Research Board, Washington, D.C., 2005.

Rosenbloom

Sustainability and Automobility Among the Elderly: An International Assessment.

Transportation, Vol. 28, 2001, pp. 375–408.

Metz

D. H.

Mobility of Older People and Their Quality of Life.

Transport Policy, Vol. 7, 2000, pp. 149–152.

Alsnih

, and Hensher

D. A.

. The Mobility and Accessibility Expectations of Seniors in an Aging Population. Transportation Research A, Vol. 37, 2003, pp. 903–916.

Hildebrand

E. D.

Dimensions in Elderly Travel Behaviour: A Simplified Activity-Based Model Using Lifestyle Clusters.

Transportation, Vol. 30, 2003, pp. 285–306.

Tacken

Mobility of the Elderly in Time and Space in The Netherlands: An Analysis of the Dutch National Travel Survey.

Transportation, Vol. 25, 1998, pp. 379–393.

Noble

, and (Kit) Mitchell

C. G. B.

Some Aspects of Travel by Older People.

Proc., TRANSED 2001, Warsaw, Poland, 2001.

Stern

A Disaggregate Discrete Choice Model of Transportation Demand by Elderly and Disabled People in Rural Virginia.

Transportation Research A, Vol. 27, No. 4, 1993, pp. 315–327.

Sweenly

Travel Patterns of Older Americans with Disabilities. Working paper 2004-001-OAS. Bureau of Transportation Statistics, Washington, D.C., 2004.

10.

Rosenbloom

The Mobility Needs of Older Americans: Implications for Transportation Reauthorization. Brookings Institution Center on Transportation Reform, the Brookings Institution Center on Urban and Metropolitan Policy, Washington, D.C. 2003. www.brookings.org/dybdocroot/es/urban/publications/20030807_Rosenbloom.pdf. Accessed July 30, 2004.

11.

Long

J. S.

Regression Models for Categorical and Limited Dependent Variables. Sage Publications, Thousand Oaks, Calif., 1997.

12.

Washington

S. P.

, Karlaftis

M. G.

, and Mannering

F. L.

. Statistical and Econometric Methods for Transportation Data Analysis. Chapman and Hall/CRC, Boca Raton, Fla., 2003.

13.

Mackinnon

J. G.

, White

, and Davidson

. Tests for Model Specification in the Presence of Alternative Hypothesis: Some Further Results. Journal of Econometrics, Vol. 21, 1983, pp. 53–70.

14.

Boarnet

M. G.

, and Crane

. Travel by Design: The Influence of Urban Form on Travel. Oxford University Press, Oxford, United Kingdom, 2001.