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A Simultaneous Modeling Approach to Evaluate the Endogenous Influence of Urban Form and Public Transit Accessibility on Distance Traveled

机译:评价城市形态和公共交通可达性对行进距离的内生影响的同时建模方法

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This paper is an attempt to better understand the endogenous relationships between urban form,public transit accessibility, and daily travel distance. A model of two simultaneous equations isimplemented, taking into account interaction between ownership of vehicles and choice ofhousehold location as explanatory endogenous variables for total distance traveled byrespondents. Choice of household location is defined based on cluster analysis (neighborhoodtypology) driven by land use mix, population density and transit accessibility. Controlling forsocio-economic variables, the impacts of neighborhood typologies combined with car ownershiplevels as endogenous choices are estimated using a simultaneous equation model. This researchmakes use of the Quebec City origin/destination survey data from 2001, which include more than50,000 individual respondents. Among other results, it was confirmed the presence ofendogeneity. Without taking this into account, it is found that the joint effects of car ownershipand household location choices are underestimated. Based on the simultaneous model, totaldistance traveled by individuals is primarily influenced by employment status as well ashousehold structure. In fact, total distance per individual has an average growth of 50% whenworking full time. This also increases in 5.7% per child and decreases in 2.4% per person(economy of scale). While urban form and transit supply variables introduced individually intothe model have little influence on distance traveled, neighborhood type as an endogenousvariable has more explanatory power. For example, an individual living in the periphery andowning a vehicle that moves downtown and abandons his or her vehicle reduces their total tripdistance by nearly 75%.
机译:本文旨在更好地了解城市形态之间的内生关系, 公共交通的可达性和每日出行距离。两个联立方程的模型是 实施时要考虑到车辆所有权和车辆选择之间的相互作用 家庭位置作为解释性内生变量的总行进距离 被调查者。根据聚类分析(邻里)定义家庭位置的选择 类型学)由土地使用结构,人口密度和交通可及性驱动。控制 社会经济变量,社区类型和汽车拥有量的影响 使用联立方程模型估算作为内生选择的水平。这项研究 利用了2001年的魁北克市起源/目的地调查数据,其中包括 50,000名个人受访者。在其他结果中,确认存在 内生性。在不考虑这一点的情况下,发现汽车拥有权的共同影响 和家庭位置选择被低估了。根据同步模型,总计 个人旅行的距离主要受就业状况以及 家庭结构。实际上,当 全职工作。这也使每个孩子增加5.7%,而每个人减少2.4% (规模经济)。而城市形态和过境供应变量则分别引入 该模型对行进距离影响不大,邻域类型是内生的 变量具有更多的解释力。例如,生活在周边地区的一个人 拥有一辆可在市区行驶并放弃其车辆的车辆,可减少他们的总行程 距离增加了近75%。

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