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2012年6月20日,沈海高速一辆双层卧铺客车翻车坠入36米深的山谷,致17人死亡,28人受伤;2012年8月26日,陕西延安包茂高速上发生特大车祸,一辆双层卧铺客车与一辆装有甲醇的货车追尾导致36名乘客身亡。接连发生的特大交通事故,引起L人们对长途客运安全的极大关注。 相似文献
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10月,中国客车统计信息网的50家客车企业共计销售客车19084辆,同比增长13.30%。1—10月累计销售客车188314辆,累计增量13508辆,增幅为7.73%,其中大型客车同比增长13.12%,中型客车增长8.02%,轻型客车增长2.94%,中、轻型客车的市场表现有所好转。 相似文献
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9月,中国客车统计信息网的50家客车企业共计销售客车22658辆,增长2.58%,大中型客车同比仍然有11.95%的增幅,继续强势。1—9月累计销售客车169231辆,累计增量11268辆,增幅为7.13%,比上月有所收窄,其中大型客车同比增长13.80%,中型客车增长7.60%,轻型客车增长1.08%, 相似文献
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2012年6月20日,沈海高速一辆双层卧铺客车翻车坠入36米深的山谷,致17人死亡,28人受伤;2012年8月26日,陕西延安包茂高速上发生特大车祸,一辆双层卧铺客车与一辆装有甲醇的货车追尾导致36名乘客身亡。接连发生的特大交通事故,引起了人们对长途客运安全的极大关注。这不禁让交通管理部门再次绷紧"交通安全神经"。2012年7月,国务院办公厅出台《国务院关于加强道路交通安全工作的意见》要求"逐步减少1000公里以上的长途客运"。交通 相似文献
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<正>2014年客车市场形势2014年,中国客车统计信息网的50家企业累计销售5米以上客车221986辆,同比下降1.10%,其中座位客车(公路客车)销量109076辆,同比下降3.46%,校车销量24663辆,下降13.25%,公交客车销量84291辆,增长5.39%,其他客车销量较小不做重点研究。总体来看,2014年客车市场表现十分平淡,分析销量数据,主要有3个特点:座位客车:已连续三年下滑,反转在即2011年到2013年,5米以上座位客车销量已由136405辆下滑到109076辆,其中2012年同比下降10.46%,2013年下降7.5%,2014年下降3.46%。下降幅度逐年收窄,反 相似文献
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截至2011年9月,中国客车统计信息网的数据显示:1~9月全国50家客车企业累计销售客车169231辆,累计增量11268辆,增幅为7.13%。庞大的销量下,我们很难想象,55年前的中国,甚至连一辆"made inChina"的客车都没有!建国前到建国初期,上海百老汇门口,偶尔能看见几辆略显破旧又摇摇欲坠的大客车缓缓开过,车尾的铜 相似文献
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一辆载重20吨的货车,每吨的运输成本为200元,一车就是4000元.这样的价格当然不会被客户接受,但是如果让每辆车拉货40吨,再把单价降为每吨150元.那么每车的运输费用则为6000元,这个结果是运输公司和客户都会接受的。如果让货车把3天一个来回的路程加速到两天一个来回.如此多拉快跑,就会创造可观的利润, 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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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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This paper estimates the efficiencies and productivity changes of 12 international airports in the Asia-Pacific region based on data from 1998 to 2006. We apply stochastic frontier analysis (SFA) to compute efficiency estimates and use the Malmquist productivity index (MPI) to analyze productivity changes. We use the SFA model with a translog-type production function after testing the statistical hypotheses. According to the results of the SFA hypothesis tests, airports have experienced a technological regression; the deviations from the efficiency frontier are caused more by technical inefficiency than random noise. However, the inefficiency was found to decrease. The MPI reveals a declining trend resulting more from technological change than from efficiency change, with a decrease in inefficiency. Taken together, both the hypothesis tests and the MPI not only provide consistent conclusions, but also suggest that airports should concentrate on technological progress. 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