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《运输经理世界》编辑部 《运输经理世界》2007,(10):4
在营运车辆的保有量和运输量不断迅速增长的现实之下,在道路运输燃油消耗量占全国石油消耗量的比率从20多年前的2%直升到近期的17%的现实之下,节能大幕将启,降耗鏖战在即。同时,汽车尾气已占大气污染源85%左右,排放量远超环境容量;道路运输燃油消耗量年均递增9.6%,高于"十五"期间9.4%的GDP增长率。这两大事实也无可辩驳地摆在世人面前。"节能减排"的迫切情势,让道路运输业这个主要的终端用能部门,再也没有掉队的理 相似文献
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“九五”以来,河南省各级道路运输部门以培育和发展道路运输市场为中心,进一步解放道路运输生产力,道路运输业得到了快速发展。到2002年6月,河南省民用汽车达82万余辆,其中营运车辆达50万辆;营运车辆年完成客货运输量分别达7.8亿人次和5.9亿吨,平均每年以4.7%和5.6%的速度增长,在综合运输体系中分别占94%和82%;客货运周转量分别达489亿人公里和532亿吨公里,平均每年递增6.4%和9.7%,在综合运输体系中分别占47%和24.6%。道路运输在全省综合运输结构中一直处于主导地位。道路运输业的快速发展,满足了河南省社会经济发展对道路运输的… 相似文献
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改善道路运输生态环境的必要性
道路客运企业目前正在经历着大变革、大调整,可以毫不夸张地说,我们现在是在夹缝中求生存.在综合运输体系中,道路运输业承载着90%以上的客运任务,但是我们该如何发挥自身的比较优势?目前其它运输方式正处在快速发展期,道路运输业如何顺应形势做强做大?这些都是道路运输企业应该思考的大事情. 相似文献
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道路运输在国家综合运输体系中承担着客运量90%、货运量70%以上的份额.然而,我国道路运输业的发展状态总体上并未根本改变,"多、小、散、弱、乱"等现象还普遍存在,使国家道路交通资源和基础设施功能无法充分利用,也使某些地方和区域的交通"瓶颈"问题难以彻底解决.按照国家道路交通产业政策要求,改变这种状况的主要途径是大力推进道路运输规模化、集约化、公司化经营,把企业做大做强、做活做长,成为稳定和繁荣运输市场的主导力量. 相似文献
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道路运输业发展中六大问题的畅想 总被引:1,自引:0,他引:1
<正>总体而言,我国交通运输对经济社会发展“瓶颈”的缓解,是低水平和初步的缓解,交通运输仍然滞后于经济和社会的发展。作为正处在成长期的道路运输业在“十五”期间无疑需要加快发展,本文拟就道路运输业发展的几个问题谈几点肤浅的认识。 一、对道路运输业发展内涵的认识 产业发展与经济发展相类似,是一个从低级向高级不断演进、具有内在逻辑、不以人们意志为转移的客观历史过程。一般来说产业发展不仅包括产出量的增长,而且还包含产业内部结构的根本变化。就道路运输业而言,道路运输产业发展不仅体现在运输产出量(主要指客货运输生产量)的增长上,而且从运输供给结构上 相似文献
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"全年完成公路客运量5564万人次,旅客周转量180509万人公里,货运量4388万吨,货物周转量768411万吨公里,同比分别增长5.7%、10.8%、6.7%和12.3%,为2010年和'十二五'道路运输发展奠定了坚实的基础." 相似文献
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随着我国道路运输业的发展,近5年来,我国道路运输从业人员每年以5.5%的速度增长,目前已达2767万人,下面就道路运输从业人员管理现状进行分析探讨。从业人员管理存在的问题 一是法律法规滞后。随着交通运输管理职能的调整,公共交通、地铁、出租车等纳入道路运输管理范畴,其从业人员范围也不断扩大,需要对《道路运输从业人员管理规定》(2006年第9号令)进行修订,从管理的范围、内容、方式、机制等方面进行完善,适应形势。 相似文献
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Pedestrians as compared to vehicular traffic enjoy a high degree freedom of movement even in heavily congested areas. Consequently, there are more alternative links available to pedestrians between a given origin‐destination (O‐D) pair. This paper describes a study done by the University of Calgary to evaluate the factors affecting the choice of route on intra‐CBD trips or trips within the Central Business District (CBD). An origin destination survey conducted in downtown Calgary, Alberta enabled the identification of the most significant factors influencing the choice. These factors were analyzed in relation to the physical characteristics of the location, personal characteristics of the trip maker and the type of the trip. It appears that most people chose the shortest link and factors such as the level of congestion, safety or visual attractions were only secondary. This suggests that the length should be made a major consideration when planning and designing pedestrian links. 相似文献
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《Transportation Research Part A: General》1991,25(6):407-418
The main deficiency of most current modeling approaches to transportation can be identified as neglect of the integration of existing geographical knowledge in regard to the ex ante transport/land use modeling approaches, with its focus on territorial dynamics and theory development. This paper addresses this aspect of the problem by introducing a theoretical and methodological framework for the analysis of the interrelationship between land uses. The analysis attempts to determine to what extent the functional land use in a city can be considered an ordered pattern. The order sought does not rely on purely spatial configurations, but on the correlation of transportation and land use. The first section of this paper focuses on theoretical considerations. It stresses the fact that conventional approaches do not apply in the present context. It then suggests an alternative based on areas of influence and measured in terms of level of attractance of land uses. The second describes a procedure based on this alternative following the remarkable contribution of Hanjoul, Beguin and Thill. An application of this procedure to the analysis of Shanghai is then examined. Finally, an evaluation of the strategies for optimizing the interrelationship between land uses is presented. The paper concludes with a possible research agenda. 相似文献
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明确埋地管道防腐保温层的技术评价标准,对埋地钢质管道的安全运行,延长管道使用寿命具有重要意义。为了对埋地管道防腐保温层做出有效评价,从间接检测与开挖检测2个方面,结合现场检测数据,提出了基于防腐保温层的电流衰减率、绝缘电阻率、质量状况与厚度的分级评价标准及基于4种评价指标的综合评判方法。工程实践表明,该评价标准对防腐保温层是否存在失效能做出有效判断。 相似文献
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介绍了城市轨道交通工程中杂散电流不同的监测系统的构成,分析了集中式、分散式和智能型等监测系统的配置和功能,以及智能型实时在线监测系统的重要意义,为轨道交通工程杂散电流监测系统的选择与应用提供参考。 相似文献
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《Transportation Research Part A: General》1982,16(5-6):363-370
The paper considers the possibility of quantitative analysis of behaviour, with particular reference to travel behaviour, from a methodological standpoint. The chief conclusion is that the nature of the subject implies that disaggregate statistical analysis is the most useful technique. The relationship of this methodology to theoretical issues is discussed, concluding that general theoretical issues are not susceptible to empirical resolution. The theoretical framework essential to analysis or forecasting of behaviour must therefore be established a priori The paper concludes with a discussion of the practical problems and achievements of disaggregate analysis. 相似文献
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天然气自动计量系统有多种组态软件,由于软件的不相通性,造成了计量系统数据采集的通用性差、数据传输与入库的时效性差、数据利用的可靠性低.结合各组态软件的实际情况,从设计上充分利用Oracle大数据处理能力以及Partition(分区表)的特性,实现历史数据的存储,应用WebService与COM+数据访问组件提供多层数据访问架构,采用OPC与DDE工业数据交换协议,实现了各站场计量数据的实时上传,为连续数据采集和实时监控提供了可能,节约了改造成本. 相似文献
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Joseph N. Prashker 《Transportation》1979,8(4):329-346
Reliability of travel modes was found to be the most important characteristic of transportation systems in several attitudinal investigations of individual travel behavior. This paper represents the first part of a research effort aimed at gaining a better understanding of the characteristics of reliability of transportation modes in urban travel. In this research, reliability characteristics are identified; their importance relative to each other is assessed, and an insight into possible structure of an objective reliability index is discussed. The research is based on perceived values of reliability, which were identified through a large attitudinal survey conducted in the Chicago metropolitan area. 相似文献