THE EFFECTIVENESS OF RIDESHARING INCENTIVES: DISCRETE-CHOICE MODELS OF COMMUTING IN SOUTHERN CALIFORNIA

This paper studies the effects of incentives designed to promote ridesharing on work trips to reduce congestion and air pollution. Discrete choice models of commute mode choice are estimated using the first wave of a new panel study of full-time workers' commuting behavior in the greater Los Angeles area. Our preferred model is an ordered probit model distinguishing three discrete alternatives: always rideshare, sometimes rideshare, and always drive alone. We find that women and those in larger households with multiple workers, longer commutes, and flexible work schedules are more likely to rideshare. We also carry out partial equilibrium policy simulations with our model to predict the quantitative effects of providing all workers with reserved parking, ridesharing subsidies, guaranteed rides home, and high-occupancy vehicle (HOV) lanes. If all these incentives are applied simultaneously, our model predicts a substantial reduction in drive-alone commuting.

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    University of California, Irvine

    Institute of Transportation Studies
    4000 Anteater Instruction and Research Building
    Irvine, CA  United States  92697
  • Authors:
    • Brownstone, D
    • Golob, T F
  • Publication Date: 1991

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  • Accession Number: 00603582
  • Record Type: Publication
  • Report/Paper Numbers: UCI-ITS-WP-90-7
  • Files: TRIS
  • Created Date: Feb 28 1991 12:00AM