排序方式: 共有93条查询结果,搜索用时 15 毫秒
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美国德克萨斯交通研究所每年发表一份对美国主要城市机动性评估的研究报告。根据2003年和以前的数据,针对美国85个城市区域,2005年的报告对反映其道路系统机动性的主要指标进行了评估,指出美国城市交通阻塞持续恶化。报告列举了交通拥挤引起的一些主要问题,提出了缓解交通紧张状况的一些关键措施,并对这些措施可能产生的效益进行了对比分析。 相似文献
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首先论述了公共停车场建设前进行成本-效益分析的重要性.通过对目前公共停车场建设项目评估方法的分析和比较,对费用效益分析法、层次分析法和模糊综合评判进行了综合运用.结合交通建设项目特点,构建了公共停车场的效益评估指标体系,并选择使用升半岭形分布函数作为隶属函数对效益评估数据进行处理.使用费用效益分析法对公共停车场建设进行投资成本计算,并使用极差变换法得出评估结果.在分别给出成本和效益的评估方法和评估模型基础上,最后综合得出停车场建设评估模型,并通过实例说明了该方法的实用性. 相似文献
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论上海地铁产业的增值业务 总被引:1,自引:0,他引:1
陈沂 《城市轨道交通研究》2007,10(3):12-14,17
地铁产业的增值源泉,在于它的网络化生存、信息化服务和体验化需求,即源于同地铁网络相匹配的需求网络、服务网络和信息网络,以及由服务网络形成的满足消费者的体验需求.介绍了地铁产业的经营业务:乘客信息显示系统,地铁文化产业、地铁商务服务,其业务运作的路径是三维立体的,其经营方式是错位经营、品牌经营和网络经营.核心在于提供消费者的增值价值的同时为地铁带来巨大的经济和社会价值. 相似文献
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基于土地开发收益的轨道交通间接利益还原模式研究 总被引:1,自引:0,他引:1
分析了目前我国城市轨道交通的投资和运营资本的来源和现状,结合廊道效应阐述了轨道交通对沿线区域土地不动产带来的利益及利益分配的不合理性。按照轨道交通对城市的功能作用,可分为引领城市的合理发展而建设的轨道交通和解决城市交通拥挤问题而建设的轨道交通两种情况,并分别讨论了间接利益的还原方式和指出要保证间接利益还原的合理性。 相似文献
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Maria Börjesson Jonas Eliasson 《Transportation Research Part A: Policy and Practice》2012,46(4):673-683
We estimate the value of time savings, different cycling environments and additional benefits in cost-benefit analysis of cycling investments. Cyclists’ value of travel time savings turns out to be high, considerably higher than the value of time savings on alternative modes. Cyclists also value other improvements highly, such as separated bicycle lanes. As to additional benefits of cycling improvements in the form of health and reduced car traffic, our results do not support the notion that these will be a significant part in a cost-benefit analysis. Bicyclists seem to take health largely into account when making their travel choices, implying that it would be double-counting to add total health benefits to the analysis once the consumer surplus has been correctly calculated. As to reductions in car traffic, our results indicate that the cross-elasticity between car and cycle is low, and hence benefits from traffic reductions will be small. However, the valuations of improved cycling speeds and comfort are so high that it seems likely that improvements for cyclists are cost-effective compared to many other types of investments, without having to invoke second-order, indirect effects. In other words, our results suggest that bicycle should be viewed as a competitive mode of travel and not primarily as a means to achieve improved health or reduced car traffic. 相似文献
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Forest operations use fossil fuels, which should be considered when environmental impact in the wood procurement is of concern. Road freight transportation is the most common operation in timber transportation, and thus is an important source of greenhouse gas emissions. This study assesses the impact of the new larger and heavier vehicles (LHV) on environmental emissions using the synchronized calculation method. The maximum (theoretical) and operational effects of 76 t LHV with calculations made for three weight limits (60, 64 and 68 t) are compared in Finland. Based on Enterprise Resource Planning (ERP) data, environmental energy efficiency (measured in relation to the trip) increased 9.2%. The reduction in fuel consumption was 12.5%, though this is likely to under-estimate the long-term effects that will be achieved when forest operations are fully adjusted to the maximum weight limit. A comparison with the European countries and a preliminary sensitivity analysis of the system demonstrate that the technological development to improve the transporting efficiency is essential for realizing 76 t LHV utilization in Finland. 相似文献
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熊义 《辽宁省交通高等专科学校学报》2006,8(2):51-53
在我国的大中城市中,机动三轮车运营现象普遍存在。对这些车辆,尤其是在一些大城市中,政府有关部门千方百计地试图加以消灭,可是屡战屡败,而这些运营车辆却生意十分兴隆。为什么会出现这种现象?这种现象怎么会长期存在?本文通过对沈阳市机动三轮车运营情况的实际调查并利用经济博弈论进行一个初步的分析。 相似文献
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按不同开发主体将城市轨道交通场站周边土地开发模式划分为两种:房地产企业为主导和城市轨道交通企业为主导;分别构建了政府视角下的土地开发模式的经济效益测算模型,对比不同模式下的轨道交通线路盈亏、城市轨道交通场站周边土地开发收益和政府的效益;最后,以某地铁线为例,设定一次性收益与持续性收益两种土地开发情形进行案例分析。研究结果表明:一次性收益情形下,由轨道交通企业主导开发时,可通过建设用地面积达10.96万m2的潜力地块的开发收益和部分税收金额反哺运营亏损,年均政府经济效益为2.40亿元。持续性收益情形下,在线路运营初期、近期、远期,轨道交通企业主导开发模式下的年均政府经济效益均优于房地产企业主导开发模式,且轨道交通企业主导开发几乎可实现自负盈亏,政府在线路运营初期、近期、远期分别只需支出23.65%、20.75%、16.74%的税收金额用于补贴。 相似文献
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