A Moment of Time: Reliability in Route Choice Using Stated Preference

Abstract

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Value of Travel-Time Reliability: Commuters’ Route-Choice Behavior in the Twin Cities

“…In addition, Tilahun and Levinson (2010) examine various measures of travel-time distributions including traditional ones such as mean-variance. Tilahun and Levinson (2010) also introduce a new travel-time reliability measure consisting of two moments: the first represents on average how early the traveler has arrived by using that route; and the second represents on average how late that individual arrived by using that particular route. They assume that the deviation of the two moments (average late or average early) from the most frequent experience is a representative way of getting together the possible range and frequencies experienced by the travelers.…”

“…Distinct measures have been theorized and developed in order to establish a more direct connection between traveltime variability and travel-time unreliability, and consequently measure the latter accurately. Based on Tilahun and Levinson (2010), three travel-time unreliability measures are used in the RCL models, all are normally i.i.d. :…”

The importance of being early

“…The results indicate that travelers value reliability highly but the valuation varies with how reliability is measured. Tilahun and Levinson (2006) and Hollander (2006) review the two distinct approaches used by researchers to understand the attitude of travelers and the tradeoffs they make in response to travel time variability. The first approach, called the mean-variance approach, models the the extent of travel time variability directly in the model predicting traveler response, typically a utility or cost function.…”

“…A stated preference study on travel time reliability explores the tradeoffs travelers make when choosing routes (Tilahun and Levinson 2006). Three alternate utility formulations of reliability are explored in this paper.…”

Impacts of User Heterogeneity and Attitudinal Factors on Roadway Pricing Analysis - Investigation of Value of Time and Value of Reliability for Managed Lane Facilities in South Florida

“…Reported VOT estimates vary from $3.88/hour (Calfee and Winston, 1998) to as high as $47.50/hour (Patil et al, 2012B)), while VOR ranges between $2.31/hour (Tilahun and Levinson, 2010) and $68.90/hour (Asensio and Matas, 2008). In general, researchers attributed this variation to several aspects, including demographic characteristics, transportation alternative characteristics, and regional context.…”