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981.
通过分析影响城市道路横断面方案选择的因素,并按照因素间的并列关系或从属关系,建立了影响因素的多层次结构模型;采用层次分析法确定各影响因素的权重,并根据工程实践经验提供了影响因素评语的确定依据;从而建立了城市道路横断面方案评价的多级模糊综合评判模型。工程实例分析表明,多级模糊综合评判方法是合理可行的。 相似文献
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Singapore’s Electronic Road Pricing (ERP) system involves time-variable charges which are intended to spread the morning traffic peak. The charges are revised every three months and thus induce regular motorists to re-think their travel decisions. ERP traffic data, captured by the system, provides a valuable source of information for studying motorists’ travel behaviour. This paper proposes a new modelling methodology for using these data to forecast short-term impacts of rate adjustment on peak period traffic volumes. Separate models are developed for different categories of vehicles which are segmented according to their demand elasticity with respect to road pricing. A method is proposed for estimating the maximum likelihood value of preferred arrival time (PAT) for each vehicle’s arrivals at a particular ERP gantry under different charging conditions. Iterative procedures are used in both model calibration and application. The proposed approach was tested using traffic datasets recorded in 2003 at a gantry located on Singapore’s Central Expressway (CTE). The model calibration and validation show satisfactory results. 相似文献
984.
Carl J. Hamilton Jonas Eliasson 《Transportation Research Part C: Emerging Technologies》2011,19(6):1019-1032
As more European roads become tolled by various means, an increasing share of road users become subject to more than one tolling scheme in their regular driving. This can be especially burdensome for long distance hauliers, who may pass several countries and tolled motorway systems during the course of 1 day. For this reason, a range of projects have been initiated attempting to increase the level of interoperability between tolling systems, many of which with only limited success. By analyzing current incentives, costs and benefits for toll operators and road users, we conclude firstly that the current level of interoperability is likely to be lower than socially optimal, and secondly that a direct regulation making the provision of interoperability mandatory is likely to be in excess of what is socially optimal. We argue that vertically separating the monopolistic toll operators could be a cost-efficient way to achieve a socially optimal level of interoperability as a equilibrium market outcome. 相似文献
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分析了中环线真北路武宁路立交在上海城市道路网格局中的地位,明确了其功能定位,确定了该立交的建设标准和建设规模,提出了几个立交设计方案并分别进行了评价分析,通过比选确立了建议方案,并对城市立交的建设提出了一些建设性意见。 相似文献
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