Attitudes, mode switching behavior, and the built environment: A longitudinal study in the Puget Sound Region

Tingting Wang and Cynthia Chen

Transportation Research Part A: Policy and Practice, 2012, vol. 46, issue 10, 1594-1607

Abstract: Carpooling in the US has a storied history. After experiencing a peak 20% mode share in 1980, the current share of carpooling for work trips is about 10% and the majority of these carpooling trips are made by intra-household members. Casting the choice between SOV and carpool as a social dilemma in which SOV is a noncooperative choice and carpool is a cooperative one, we propose to test two hypotheses. First, the switch from SOV to carpool and the reverse choice are attributed to different factors—structural factors, or those factors altering the objective features of a decision scenario such as travel time and travel cost, play a dominant role in the switch from carpool to SOV while psychosocial factors (attitudes and beliefs) play a critical role in the switch from SOV to carpool. Second, the two choices are underlay by different behavioral mechanisms. In particular, we expect self-justification by carpool-to-SOV switchers—after they switch from carpool to SOV, they adjusted their attitudes toward carpool accordingly to match their behavior. The analysis of the first three waves of the Puget Sound Transportation Panel supports these two hypotheses. Our study results recommend developing programs and policies that aim at influencing people’s subjective assessments of carpooling, in addition to the existing ones that mostly focus on incentivizing carpooling, and differentiating between programs seeking to encourage SOV users to switch to carpool and those aiming to maintain existing carpoolers.

Keywords: Mode switching behavior; Attitudes; Perceptions and feelings; The built environment; Density; Carpool (search for similar items in EconPapers)
Date: 2012
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Citations: View citations in EconPapers (19)

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DOI: 10.1016/j.tra.2012.08.001

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