Comparing Perceived and Actual Travel Time Savings on Freeways with Managed Lanes

Prem Chand Devarasetty · Mark Whitman Burris · Chao Huang

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Transportation Planning and Optimization Economic and Environmental Valuation Transportation and Mobility Innovations

Abstract

Respondents to a 2010 revealed preference survey were asked questions related to their recent travel on Houston’s Katy Freeway (Houston, TX, USA). One question asked if they experienced any travel time savings by using the new Katy Managed Lanes (MLs). This study examined any difference between their perceived and actual travel time savings. This study found that travelers overestimated the travel time savings they experienced by traveling on the MLs by a factor of 4. The magnitude of misperception varied with individuals, but the average individual saved approximately 3 minutes and thought they saved nearly 12 minutes. Linear regression models were fit to model the misperception of the travel time savings and found that both trip characteristics and respondent socioeconomic characteristics had an effect on the magnitude of misperception of travel time savings. Respondents’ trip purpose, gender, and income were found to be significant predictors of how well they estimated their travel time savings.

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