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The effects of activity-travel context and individual attitudes on car-sharing decisions under travel time uncertainty: A hybrid choice modeling approach

机译：活动时间上下文和个人态度对旅行时间不确定性下的汽车共享决策的影响：一种混合选择建模方法

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People's daily decision to use car-sharing rather than other transport modes for conducting a specific activity has been investigated recently in assessing the market potential of car-sharing systems. Most studies have estimated transport mode choice models with an extended choice set using attributes such as average travel time and costs. However, car-sharing systems have some distinctive features: users have to reserve a car in advance and pay time-based costs for using the car. Therefore, the effects of activity-travel context and travel time uncertainty require further consideration in models that predict car-sharing demand. Moreover, the relationships between individual latent attitudes and the intention to use car-sharing have not yet been investigated in much detail. In contributing to the research on car-sharing, the present study is designed to examine the effects of activity-travel context and individual latent attitudes on short-term car sharing decisions under travel time uncertainty. The effects of all these factors were simultaneously estimated using a hybrid choice modeling framework. The data used in this study was collected in the Netherlands, 2015 using a stated choice experiment. Hypothetical choice situations were designed to collect respondents' intention to use a shared-car for their travel to work. A total of 791 respondents completed the experiment. The estimation results suggest that time constraints, lack of spontaneity and a larger variation in travel times have significant negative effects on people's intention to use a shared-car. Furthermore, this intention is significantly associated with latent attitudes about pro-environmental preferences, the symbolic value of cars, and privacy-seeking.
机译：最近，人们在评估汽车共享系统的市场潜力时，已经调查了人们日常使用汽车共享而不是其他交通工具进行特定活动的决定。大多数研究使用平均旅行时间和成本等属性来估计具有扩展选择集的运输模式选择模型。但是，汽车共享系统具有一些独特的功能：用户必须提前预订汽车，并支付基于时间的使用汽车费用。因此，在预测汽车共享需求的模型中，需要进一步考虑活动旅行环境和旅行时间不确定性的影响。此外，个人潜伏态度与共享汽车的意图之间的关系尚未得到详细研究。为促进对汽车共享的研究，本研究旨在研究在旅行时间不确定的情况下，活动旅行环境和个人潜在态度对短期汽车共享决策的影响。使用混合选择建模框架同时评估所有这些因素的影响。本研究中使用的数据是在2015年的荷兰使用指定的选择实验收集的。假设的选择情况旨在收集受访者使用共用汽车上班的意图。共有791名受访者完成了该实验。估计结果表明，时间限制，缺乏自发性和旅行时间的较大变化会对人们使用共享汽车的意图产生重大负面影响。此外，这种意图与对亲环境偏好，汽车的象征价值和寻求隐私的潜在态度有很大关系。

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