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首页> 外文期刊>Transportation Research Record >Asset Management Strategy to Meet Long-Term Transit Fleet Needs of State Departments of Transportation
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Asset Management Strategy to Meet Long-Term Transit Fleet Needs of State Departments of Transportation

机译：满足美国运输部长期过境运输机队需求的资产管理策略

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State departments of transportation (DOTs) that provide the bulk of matching funds to local transit agencies for the purchase of new buses are duly concerned about the escalating costs of new buses and the lack of sufficient funds to keep up with bus replacement. An asset management strategy is presented for state DOTs to meet their long-term fleet needs. It is a two-stage process: (a) allocating capital dollars for the dual purpose of purchasing new buses and rebuilding existing buses (taking into consideration the needs of all the constituent transit agencies) and (b) distributing funds among the agencies in an equitable manner. The proposed management strategy includes two optimization models. Model 1 attempts to maximize the weighted fleet life of all the buses that are being purchased and rebuilt for a given peer group, within the constraints of a fixed budget. Model 2 is designed to maximize the remaining life of the entire peer group composed of the existing buses as well as those being replaced or rebuilt. The need for every single bus that is eligible for replacement is addressed in the model through either replacement or rebuilding. A comprehensive case study depicting a 7-year planning cycle for the entire fleet of medium-sized buses in the state of Michigan is used to demonstrate the strategy. A plan for evaluating the strategy is also presented and demonstrated. Results show that the strategy is viable and that it can be used for the designated purpose with fleet data that are currently available to the transit agencies. Even though the strategy is demonstrated with medium-sized buses, it will function efficiently with buses of different sizes and with a different number of agencies.
机译：为当地公交机构购买新巴士提供大量配套资金的州交通运输部（DOT）对新巴士的成本不断上涨以及缺乏足够的资金来跟上公交车的更换感到担忧。针对州DOT提出了资产管理策略，以满足其长期机队需求。这是一个分为两个阶段的过程：（a）为购买新公共汽车和重建现有公共汽车的双重目的分配资本金（考虑到所有组成过境机构的需求），以及（b）在各机构之间分配资金。公平的方式。提出的管理策略包括两个优化模型。模型1试图在固定预算的限制内最大化为给定的对等组购买和重建的所有公共汽车的加权车队寿命。模型2旨在最大程度地延长由现有公交车以及被替换或重建的公交车组成的整个对等组的剩余寿命。该模型中通过替换或重建解决了符合替换条件的每辆公共汽车的需求。一项全面的案例研究描述了密歇根州整个中型巴士车队的7年规划周期，以证明该策略。还提出并演示了评估策略的计划。结果表明，该策略是可行的，并且可以将其用于现有目的的数据，这些数据可以由运输机构当前使用。尽管该策略已在中型公交车上得到了证明，但它将在不同大小的公交车和不同数量的代理机构中有效运行。

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