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2019年2月18日中共中央、国务院印发了《粤港澳大湾区发展规划纲要》,其中航运清洁发展是重要的内容之一。面对粤港澳大湾区水路运输高速发展的态势,尤其是石油及其制品的运量快速增长,船舶及其有关作业活动对水域环境造成的污染风险越来越大,大湾区内各市均不同程度面临着严峻的船舶污染防治形势。为保障国家、行业以及《规划纲要》关于船舶污染防治措施和要求的落实,本研究对大湾区船舶污染风险进行了分析,梳理了大湾区船舶污染防治现状,并提出了相应的污染防治对策。 相似文献
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为推动粤港澳大湾区轨道交通一体化的持续发展,从区域轨道客流预测的复杂性作为切入点,在阐述粤港澳大湾区多层次轨道交通系统发展概况的基础上,进行湾区交通圈层划分,并论述了不同圈层出行特征的差异及联系;通过现有城市轨道交通和铁路客流预测方法的回顾及适应性分析,肯定了“四阶段法”类预测方法在轨道交通规划设计阶段应用的优越性;进而提出圈层分级的轨道交通预测思路,并以四阶段法为核心,搭建粤港澳大湾区尺度下的轨道交通一体化客流预测框架。 相似文献
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分析粤港澳大湾区高速公路路网结构和拥堵状况,研究构建湾区交通智慧管控系统,提出系统平台的基本功能和需求,探讨系统建设1+1+3总体技术架构,以指导系统开发. 相似文献
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本文从都市圈一体化发展的角度,分析了深圳、东莞、惠州三地道路网发展现状、三市经济一体化和综合运输发展趋势,从完善一体化道路网基础设施、加强交通组织管理、提升综合服务能力、统一公路与城市道路的管理机构、健全道路网一体化法规政策等方面提出了深莞惠都市圈道路网一体化发展对策建议。 相似文献
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随着长三角区域一体化发展、粤港澳大湾区建设等重大战略的实施,区域一体化已成为耳熟能详的热词。城市是区域发展的空间载体,区域一体化发展需要区域内各城市之间形成积极合作互利共赢的发展格局。开展重大交通基础设施项目跨界合作,是推进区域内各城市一体化进程的有效工具。 相似文献
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本文从区域同城化产生的背景和内涵出发,对同城化发展中交通运输需求的新特点和发展趋势进行了分析,提出了同城化区域的交通发展对策。 相似文献
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Thomas J. Higgins 《Transportation》1981,10(4):357-371
This paper examines attempts by planners and policy makers to analyze and bring about the coordination of rail and bus transit in the San Francisco Bay Area. Drawing on studies and plans before and after the creation of the rapid rail system BART (Bay Area Rapid Transit), the author points to technical, analytical and political problems in attempts to link BART and buses. Some options and cautions are presented for planners considering route coordination, feeder buses, transfers and institutional arrangements to manage bus and rail services. 相似文献
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Transportation - This article presents the results of a survey on egocentric social networks in the Greater Tokyo Area. This is, together with our preliminary study, the first study on egocentric... 相似文献
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Transportation - This paper presents a longitudinal analysis of activity generation behaviour in the Greater Toronto and Hamilton Area (GTHA) between 1996 and 2016 for various activity types: work,... 相似文献
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G. A. Giannopoulos 《Transportation》1977,6(4):379-392
The research described in this paper is an attempt to quantify the impact of a certain distribution of land uses upon trip characteristics — notably trip lengths. The idea is to relate trip lengths classified by mode and purpose to the distance of one trip end from the conurbation centre. The latter is defined as the point which represents a reasonable estimate of the place where the economic, administrative, and cultural life of the urban area is centered.By relating trip lengths to the distance of one trip end from the centre, one could obtain a relation which in effect would be a quantitative expression of the relation between transport and land use. The first application of this idea was in London using the 1966 journey to work data, and it gave quite satisfactory results.The area examined in this research is the Greater Athens Area. The method of analysis is similar to that followed in London so the results of the two studies can be compared. Only work trips are considered for four modes: car, bus, train and all modes (total). It is found that in the case of Athens too, when distance of the workplace from the centre is considered, trip lengths change in smoothly varying ways and a series of mathematical curves can be fitted to the data with an acceptable degree of accuracy. These curves are of the Gamma family having a constant spread factor and varying scale factors for each mode considered. When the distance of the residence end of the trip from the centre is considered, the trip length distributions are not very smooth, a clear mathematical curve cannot be fitted, but again a considerable degree of order can be detected. In addition to the above results a discussion is given on their meaning and the possibilities for future research. In fact the results so far are considered to be the first stage of a more extended research programme which will eventually connect trip length distributions to income and other economic or social parameters in an urban area.The author wishes to express his thanks and appreciation for the comments and constructive criticism made on the various drafts of this paper by M.J.M. 相似文献
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在铁路行业高度垄断,铁路运营普遍效益欠佳和地方政府财力有限的现实环境下,特别是国铁集团近年来大力推行“一省一公司”合资铁路重组整合的改革,对省级铁路平台的发展带来了新的巨大的问题挑战,本文结合当前在全国大力推行的合资铁路重组改革的背景,分析了省级铁路平台在改革中将面临的重大问题,包括既有投融资能力难以支撑大规模规划项目建设、已建铁路运营大规模亏损、铁路行业建设运营高度垄断严重以及铁路土地综合开发进展迟缓等一系列问题,并针对以上问题提出相关的对策建议。 相似文献