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Incorporating the influence of latent modal preferences on travel mode choice behavior

机译：纳入潜在模式偏好对出行模式选择行为的影响

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摘要

Latent modal preferences, or modality styles, are defined as behavioral predispositions characterized by a certain travel mode or set of travel modes that an individual habitually uses. They are reflective of higher-level orientations, or lifestyles, that are hypothesized to influence all dimensions of an individual's travel and activity behavior. The objectives of this paper are to understand and quantify different modality styles, and to show how the modality styles construct can be operationalized within the context of traditional models of travel mode choice. We employ the six-week MOBIDRIVE travel diary and estimate behavioral mixture models in which the modality style provides a behavioral rationale to the way in which unobserved heterogeneity is specified in the travel model. Our analysis consists of two stages: First, we explore the presence and types of modality styles suggested by the data through the means of a descriptive analysis. Next, we develop a model that captures the influence of modality styles on two dimensions of an individual's travel behavior: travel mode choice for work tours and travel mode choice for non-work tours. The modality styles are specified as latent classes; heterogeneity across modality styles include both the modes considered (choice set) and the values of taste parameters. The modality style of an individual then influences all of his/her travel mode choice decisions for work andnon-work tours. In addition, error components capture unobserved correlation across travel mode choice decisions made by the same individual. Results indicate the presence of habitual drivers who display a strong bias for using the automobile and multimodal individuals who exhibit variation in their modal preferences. Multimodal behavior is further distinguished by those who appear to be sensitive to travel times and those who appear to be insensitive. Estimation results further find that modality styles are strongly correlated with more long-term travel decisions and life-cycle characteristics.
机译：潜在的模态偏好或模态风格被定义为以某一种出行方式或一组个人习惯使用的出行方式为特征的行为倾向。它们反映了较高的取向或生活方式，这些取向被认为会影响个人旅行和活动行为的所有方面。本文的目的是理解和量化不同的方式样式，并展示如何在传统的出行方式选择模型的背景下操作方式样式构造。我们采用了为期六周的MOBIDRIVE旅行日记，并评估了行为混合模型，其中，情态方式为在旅行模型中指定未观察到的异质性提供了行为依据。我们的分析包括两个阶段：首先，我们通过描述性分析的方式探索数据所建议的情态样式的存在和类型。接下来，我们开发一个模型，该模型捕获模式样式对个人旅行行为的两个维度的影响：工作旅行的旅行模式选择和非工作旅行的旅行模式选择。模态样式被指定为潜在类。情态样式之间的异质性包括所考虑的模式（选择集）和口味参数的值。然后，个人的方式样式会影响他/她的工作和非工作旅行的所有出行方式选择决定。此外，错误分量捕获了同一个人在出行模式选择决策中无法观察到的相关性。结果表明，习惯性驾驶员的存在表现出强烈的偏见，他们倾向于使用表现出模态偏好差异的汽车和多模式个人。多模式行为的特征还在于那些对旅行时间敏感的人和对旅行时间不敏感的人。估计结果进一步发现，方式样式与更多的长期旅行决策和生命周期特征密切相关。

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