WHICH MATTERS MORE IN MODE CHOICE: DENSITY OR INCOME? THE RELATIVE EFFECTS OF POPULATION DENSITY AND INCOME ON COMMUTE-TRIP MODAL SPLIT IN URBAN AREAS.
This analysis examines data at the census tract, city, and metropolitan area levels. In addition to the primary question of income versus density in affecting commuters' modal split, other factors influencing mode choice are considered, such as a destination's regional prominence or a worker's access to heavy-rail transit. Given a cross-sectional analysis, the findings are that work-trip mode choice is significantly determined by density (and/or the factors that are proxied by density -- such as higher land prices and parking fees, more frequent transit service, and more congested roadways), not income. In fact, the absolute value of the elasticity of percentage of workers not driving alone with respect to density (approximately +0.35) is more than twice that with respect to per-capita income (roughly -0.1). Furthermore, the variable of density was found to be highly (statistically) significant across all regressions (i.e., at the 1 percent level), whereas income was rarely even significant (10 percent level).
Institute of Transportation Engineers (ITE)Washington, DC United States
- Kockelman, K M
- 1995 Compendium of Technical Papers. Institute of Transportation Engineers 65th Annual Meeting.
- Location: Denver, CO
- Date: 1995-8-5 to 1995-8-8
- Publication Date: 1995-8
- Features: Figures; References;
- Pagination: p. 844-867
- TRT Terms: Commuting; Income; Modal split; Mode choice; Population density; Traffic flow; Travel patterns; Urban areas
- Subject Areas: Highways; Planning and Forecasting; I72: Traffic and Transport Planning;
- Accession Number: 00713883
- Record Type: Publication
- Files: TRIS
- Created Date: Nov 6 1995 12:00AM