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A business establishment fleet ownership and composition model

机译：商业机构车队所有权和组成模型

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摘要

Commercial vehicle fleet ownership is a business decision that is fundamental to the transportation operations of a business establishment. This paper develops a model of fleet ownership and composition for the Region of Peel, Canada. A trivariate model is developed to represent a business establishment's correlated decisions of how many passenger cars, pickups/vans, or trucks/tractors are owned by the company. The joint model is approximated into a closed-form formulation by using the composite marginal likelihood approach combined with copula functions. The models are estimated using establishment data from the Region of Peel Commercial Travel Survey, and land use and transportation infrastructure variables developed from GIS databases. Larger establishments, as measured by number of employees, are more likely to own vehicles, as are establishments with greater demand for goods and services. Differences are found between establishments in different industry classifications, with the construction industry favoring pickups/vans, and the office/service industries less inclined to own trucks or pickups/vans. Significant negative copulas between ownership of different vehicle types reveal a substitution effect. This also shows the importance of developing the joint model over the independent formulation for decisions on ownership of different types of vehicles.
机译：商用车车队所有权是一项业务决策，对于企业机构的运输运营至关重要。本文为加拿大皮尔地区建立了车队所有权和组成模型。开发了一个三变量模型来表示企业对公司拥有多少辆乘用车，皮卡车/货车或卡车/拖拉机的决策。通过使用复合边际似然方法结合copula函数，将联合模型近似为封闭形式。这些模型是使用Peel商业旅行调查区域的企业数据以及GIS数据库开发的土地使用和运输基础设施变量估算的。按雇员人数衡量，规模较大的企业和对商品和服务需求较大的企业更有可能拥有车辆。在不同行业类别的场所之间发现差异，其中建筑行业偏爱皮卡/厢式货车，而办公/服务行业则不太倾向于拥有卡车或皮卡/厢式货车。不同车辆类型的所有权之间的显着负面关联表示替代效应。这也表明，在制定独立模型以制定不同类型车辆的所有权时，必须建立联合模型的重要性。

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