Alternative Measure of Household Structure and Stage in Life Cycle for Transport Modeling

Abstract

A new concept in describing the structure of households is introduced. The average age of the household, as well as its relationship to the age of the individual, is shown to have some interesting and consistent properties that provide greater insight into the structure of households, particularly as an individual grows older. The relationships between age of the individual and average age and size of the household are shown to provide extra information to that contained in more conventional descriptive measures of household structure. In addition, with a model of trip generation based on chi-square automatic interaction detection, the average age of the household, along with its relationship to the age of the individual, is shown to be a more significant predictor of daily trip rates than some more conventional measures of household structure. It is shown that despite its computational simplicity, the new variable has promise in describing household structure and changes in life cycle and that further investigation of the properties of the variable should be undertaken.

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References

Richardson

A. J.

and Ampt

E. S.

. The Application of Total Design Principles in Mail-Back Travel Surveys. Presented at 7th World Conference of Transport Research, Sydney, Australia, 1995.

Clarke

and Dix

. Stage in Lifecycle—A Classificatory Variable with Dynamic Properties. In Recent Advances in Travel Demand Analysis ( Carpenter

and Jones

, eds.), Gower, England, 1981.

Magidson

The CHAID Approach to Segmentation Modeling: Chisquared Automatic Interaction Detection. In Advanced Methods of Marketing Research ( Bagozzi

R. P.

, ed.), Blackwell, Cambridge, United Kingdom, 1994.

Strambi

and van de Bilt

K. A.

. Trip Generation Modeling Using CHAID, a Criterion-Based Segmentation Modeling Tool. In Transportation Research Record 1645, TRB, National Research Council, Washington, D.C., 1998, pp. 24–31.