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1.
A survey of Bus Rapid Transit BRT and Bus of High Level of Service BHLS around the world indicates that there are about 120 cities with bus corridors, with 99 of the cities entering into the list in the last 12 years. The existing bus corridors comprise about 280 corridors, 4300 km, 6700 stations and use 30,000 buses, serving about 28 million passengers per day. In 2010–2011, 19 cities completed new systems − 16 in the developing world – and seven cities expanded their current systems. By late 2011, about 49 new cities were building systems, 16 cities were expanding their corridors, and 31 cities were in initial planning. This impressive growth may be attributed in part to the successes of Curitiba, Bogotá, México City, Istanbul, Ahmedabad and Guangzhou. These cities show low cost, rapid implementation and high performance BRTs, with significant positive externalities. Interesting trends are emerging, such as the implementation of citywide integrated bus systems, improved processes for private participation in operations, increased funding from national governments, and growth of bus manufacturers and technology providers. Despite the growth, there are some outstanding issues: BRT and BHLS do not have a single meaning and image and are often regarded as a “second best” as compared to rail alternatives. In addition several systems in the developing world suffer problems resulting from poor planning, implementation and operation, due to financial, institutional and regulatory constraints. The BRT and BHLS Industry are in their “infancy” and there is need for consolidation and concerted effort.  相似文献   

2.
In the 1970s, Brazil was leading the implementation of high-flow bus priority schemes, but now cities are less capable of financing public infrastructures. This paper explores the private sector participation in the provision of transit infrastructure based on Public-Private Partnerships (PPP) for Bus Rapid Transit (BRT). The Porto Alegre BRT contemplates interchange terminals planned to accommodate retail and service activities. It is expected that these areas shall generate enough revenues to remunerate private investors, under a PPP scheme, for the construction of terminals and part of the infrastructure required to upgrade some sections of the existing busways to BRT standards.  相似文献   

3.
The City of Johannesburg, South Africa, implemented the first phase of its Bus Rapid Transit (BRT) system named Rea Vaya between 2009 and 2011. The system design and organisational arrangements drew heavily on precedents from South America, especially insofar as BRT is used as an instrument for securing the transformation and formalisation of a fragmented and problematic informal public transport industry. Despite the inevitable transition problems, the formalisation scheme appears to be generally successful – an outcome that surprised many analysts as it follows a long history of mistrust, resistance, and unsuccessful interventions between government and the minibus taxi industry. The paper offers an analysis of the reasons for the successful transformation of participating taxi operators, by using a life-cycle analogy. We argue that the minibus-taxi industry in South Africa has reached a state of stasis and maturity, with limited opportunities for further growth in its present form. BRT, as it is implemented locally, offers opportunities for re-invention – for moving onto new a potential growth trajectory – by overcoming the binding constraints of informality and by opening up new markets to operators. The life-cycle analysis also offers some insights into critical success factors that, if not met in the long run, could jeopardise the longevity and scalability of the formalisation project. The paper concludes with insights regarding the planning and management of BRT systems to maximise their potential for leveraging the formalisation of informal operators, both in South Africa and in other developing countries.  相似文献   

4.
The paper presents the main characteristics, costs and impacts of TransMilenio, the bus based mass transit system of Bogotá, using BRT corridors and feeder services. An ex-post cost-benefit analysis is done, including monetary valuation of direct impacts on travel time and travel cost and externalities, such as improved road safety and air quality. Impacts on crime, land values, employment and tax revenue are also presented. The results are positive and robust; nevertheless, it is important to recognize that user perception has declined and there is urgent need to introduce service improvements. The paper also includes an ex-ante evaluation of the projected expansion using current costs, which indicates the need to limit construction capital costs. The results are an indication of the potential of BRT, and the evaluation methodology is applicable to other transit projects.  相似文献   

5.
Recent transport sector liberalisation, as well as global economic crisis, is favouring the implementation of transport infrastructure projects through Public–Private Partnerships (PPP). However, there is a debate as to whether PPP schemes are a better option than conventional procurement. To this end, an evaluation framework is proposed, to assess which of these two alternative schemes for transport projects financing is preferable for the public. The proposed framework is complimentary to the Value for Money (VfM) approach and is based on a Multi Criteria Analysis (MCA). The first step is the estimation of the Public Sector Comparator (PSC) for the case of conventional procurement, dealing with construction, maintenance and operation costs revenues, as well as any costs associated with risks undertaken by the public. As for the PPP case, it includes any payments by the public sector and related risks costs. The MCA is then applied only if the PPP is found preferable for the public sector. The latter considers additional impacts, including among others the social attributes of a particular scheme, job creation, environmental impacts and safety and security aspects. The proposed framework was applied to a pilot Bus Rapid Transit (BRT) corridor infrastructure project in the city of Indore, India, in order to demonstrate its validity. The framework and its application could provide useful guidance when considering PPP for a transport project, since it demonstrates in a transparent way the society's attitude towards this project, something that is critical to its acceptance.  相似文献   

6.
Over the past two decades, Bus Rapid Transit (BRT) has become an established transportation technology, which delivers high quality, high capacity transit at much lower cost than rail-based modes. Although initially associated with South America, it is now global with a wide array of implementations in Asia, Africa, North America, Australia, and Europe.  相似文献   

7.
Bus Rapid Transit (BRT) systems are undergoing rapid development in many countries due to the unique characteristics of this form of mass transit. In China, BRT schemes are being adopted as a key strategy for relieving traffic problems. As a case-study, this paper examines the performance and impacts of BRT in Beijing, the first full-featured BRT system in China. It considers in turn the role of ITS technology in influencing the operational efficiency, technical performance and cost issues associated with BRT. Particular attention is given to the consequent impacts of BRT on travel behaviour change, traffic environment and property development. While some challenges remain, the early performance of BRT suggests that it is one of the key measures for promoting sustainable mobility.  相似文献   

8.
Over the preceding decade, the World Bank committed about US$7.5bn in loans for urban transport projects in its client countries, involving total project costs of nearly US$13bn. Projects are designed by the client city/national governments and the World Bank in an interactive, give-and-take process. As is common in development finance, urban transport projects entail an investment program and a set of policy and institutional initiatives. A majority of Bank-funded operations in this period focused on public transport modes. A clear and overarching strategic thrust is evident, favoring private delivery of services with a strong public role through city-specific regulatory agencies. Depending on the context, projects involved efforts to introduce private operators and competition into an all-public set-up, or tighten up weakly regulated, “informal” public transport markets. A notable feature of many projects in the latter context is the use of investments in bus rapid transit infrastructure to reach multiple goals: improve transport services, maintain affordability for low-income passengers, attract new passengers, reduce negative environmental impacts, and leverage complementary reforms of policies and institutions. The Bank’s program in China, unique in its local context of a dynamic urban society moving away from a near-universal reliance on bicycles, initially did not focus on public transport but on urban roads and traffic management. Towards the end of the last decade, the motorization process and the outlook of decision makers entering a more mature stage, projects in China started to converge towards what the rest of the Bank’s program was doing – searching for a more sustainable path to urban transport development.  相似文献   

9.
The South African government in 2006 initiated an urban public transport reform programme reliant on the introduction of new bus rapid transit (BRT) systems. Affected paratransit operators can opt to be incorporated in these systems by forming new operating companies, but must withdraw their existing services from proposed routes. Cape Town's first phase of BRT operations came online in 2011, and operator engagement has focussed on this phase. The attitudes within this city's paratransit sector in relation to future phases, and to the broader reform policy, remain largely untested. In view of this sector's past resistance to government-led proposals, and the current phase avoiding areas with the highest concentrations of operators, the current engagement process's outcomes may not be adequate indicators of future prospects.  相似文献   

10.
While urban sprawl has been the general growth pattern in most developing cities worldwide, the city of Bogotá has undergone a process of densification in specific areas in the past decade. Using a differences-in-differences methodology, we have shown that the bus rapid transit (BRT) network, Transmilenio, built in this period is one of the variables that account for this higher density. Areas served by Transmilenio, especially those in the periphery that have been provided with feeder bus routes, have a higher growth than zones without access to this system. Using a similar methodology for assessing the growth of newly built areas, we have not found a clear relation between the BRT and recent evolution of residential, commercial, or work areas. However, recent scientific literature confirms an impact of the BRT on land value.  相似文献   

11.
Workshop 2 focused on the role of BRT as part of enhanced public transport service provision. Discussion topics included case studies around the world; improved performance and operations; and better contracts, institutional settings and enhanced policies. BRT was identified as a vital component of modern public transport systems due to its ability to provide high performance and rapid implementation at a lower cost than comparable rail transit. The participants concluded that on top of improving trunk transit corridors, it is important to look to the first and last kilometers and the connections among transport modes. In addition, it is important to consider all dimensions, not just the technical issues. The workshop identified the desirable ingredients for BRT success, created a table of bus based options for different applications and a list of research topics.  相似文献   

12.
A number of South African cities are planning integrated public transport networks that rely on the introduction of Bus Rapid Transit (BRT), in line with similar trends to expand or upgrade public transport services in emerging and industrialised urban transport markets around the globe. In addition, BRT in South Africa is being used as a mechanism to drive reform in the dominant yet highly fragmented paratransit sector, inspired by similar processes particularly in Latin American cities such as Bogotá, Mexico City, and Santiago de Chile. Thousands of paratransit operators would have to formalise their businesses, or merge into new or existing operator entities in order to participate in the new systems. There is, however, an absence of accessible business plans and regulatory regime proposals around which paratransit can be engaged to convince it to alter its current modus operandi. A large number of national, regional and local paratransit groupings have furthermore indicated their resistance to the planned networks on the grounds of insufficient consultation, an unclear future role in the system and employee redundancies. Should this deadlock not be resolved, it seems unlikely that the planned networks will be realised in the proposed timeframes, if indeed at all. This paper investigates the South African passenger transport policy framework that has contributed to the current deadlock, and explores appropriate approaches to engaging paratransit operators on a system of contracting, competition and ownership that recognises the sector’s aspirations and fragmented nature, yet contributes towards improved passenger transport services. It is the authors’ view that paratransit reform is a highly context-specific process, even at the sub-city level, and that this could prevent transferring paratransit regulatory and integration approaches across countries, and even cities in the same country, without adaptation to local conditions.  相似文献   

13.
This paper starts with a discussion on typical vehicles. The concepts and the usual practice for rail wagon design, both freight and passengers are presented. A discussion on rail and the environment comes next followed by Truck-Trains. Accident theories, metaphors and investigation methods are widely discussed; Hazard – Barrier – Target Model, Swiss Cheese Model, Bow-Tie Model, Fault Tree Analysis and Event Tree Analysis are explained. This paper concludes with a technical discussion on safety and security of rail vehicles, standards for safety and measures against terrorist attacks.  相似文献   

14.
This paper investigates the simulation modelling of cruise ship traffic in the Boka Kotorska Bay (BKB), which has become a very attractive cruise destination due to its geographic location, port features and attractiveness for tourism. The purpose of this paper is to examine the development of new port infrastructure, because of the increased cruise ship arrivals in recent years. The paper describes in detail the layout of the port of Kotor and the possibilities for quay extensions. The solution to minimize the number of ships at anchorage instead of being at berth is given, because the passengers of the latter ships have a more convenient approach towards the port. The simulation model is verified and the simulation results are validated against the real data prior to an investigation of the possible scenario for quay extension. The proposed solution confirms the preliminary survey results that initiated the investigation of possibilities to improve the port infrastructure. Moreover, simulation results point towards a significant improvement of cruise ships throughput in the BKB. The proposed operational policies and statistical analysis, as well as a comprehensive model analysis of the BKB provided here, are a good foundation for future investigations.  相似文献   

15.
The burgeoning commitment to contracting the delivery of bus services through competitive tendering or negotiated performance-based contracts has been accompanied by as many contract payments schemes as there are contracts. We are now well placed to design a simplified performance-linked payment (SPLP) model that can be used as a reference point to ensure value for money, given the accumulation of experiences throughout the world which have revealed substantive common elements in contracts. Whether the payment to the operator is framed as a payment per passenger or as a payment per service kilometre, the SPLP identifies efficient subsidy outcomes that are linked to a proxy indicator of net social benefit per dollar of subsidy. We illustrate how the SPLP model can be applied to obtain the gross (subsidy) cost per passenger (or per passenger km) from measures of gross cost efficiency and network effectiveness. This model can then be used as part of a benchmarking activity to identify reference value of money prospects in respect of passengers per $ subsidy outlay by adjusting for influences not under the control of the service provider. A single framework to identify contract payments to operators, and to assess (i.e., benchmark) operator performance on critical KPIs, is provided by internalising critical key performance indicators (KPIs) in the design of the SPLP. The proposed SPLP model is sufficiently general to be independent of the procurement method (competitive tendered or negotiated, for example) and of the treatment of revenue allocation (net or gross based contracts), with the additional advantage of being able to assess value for money for government.  相似文献   

16.
Local buses in Britain, outside London, were ‘deregulated’ as a result of the 1985 Transport Act, with most of the organisational changes implemented in 1986 but many of the ownership changes occurring over a longer period. By contrast, in London, the 1984 London Regional Transport Act introduced a system of comprehensive tendering – but it took 10 years for the organisational and ownership changes to be fully implemented. This paper examines the long term impacts of these changes. A key issue when examining long term changes is that of the counterfactual – what would have happened if the changes had not occurred? An econometric model of the demand for local bus services in Britain is outlined and used in conjunction with extrapolative methods for key variables such as fares and bus kms to determine demand-side counterfactuals. Some analyses of subsidy and of costs will also be outlined. This will then permit the examination of welfare change by estimating changes in consumer and producer surpluses, updating earlier studies. It is found that outside London, bus demand declined strongly, at least up to the year 2000 and some of this reduction can be ascribed to deregulation. By contrast in London, demand has generally been increasing. However, in both areas operating costs also declined strongly, again up to 2000, but since then there have been strong increases in costs and subsidy. Our initial finding is that there are net welfare increases both outside and inside London, but with welfare increases per capita being five times greater in London than elsewhere. However, sensitivity analysis shows that our results are sensitive to the specification of the modelling system and assumptions made concerning the counterfactual, particularly for the results for London.  相似文献   

17.
望毅  陈青红  刘松 《水运工程》2018,(8):109-112
针对传统的水运工程技术体系不足以支撑以BIM为工作方式的勘察设计企业的运行等问题,以某水运工程勘察设计企业为例,从标准、关键技术、平台和软件、人力资源、配套的管理体系及项目应用等方面进行探索,提出一套合适的水运工程BIM技术体系,为国内外水运工程勘察设计企业BIM技术体系建设提供参考。  相似文献   

18.
A public transportation network serves in adequate way a population if it evolves in time following the existent social reality. Changes made in order to improve service must be analyzed and evaluated. The introduction of modern technology to validate the fare card allowed a quick access to important, although incomplete, data. Databases with only the getting in validation information can be used to construct an origin–destination (OD) matrix, allowing a service quality analysis. Here it is presented a basic methodology to rigorously validate service quality criteria considering what might be interesting for the user. The quality analysis philosophy is the following. First, based on automatically gathered data, one reconstructs the origin–destination (OD) matrix, which contains information concerning the number of passengers traveling between zones of a certain region. The OD matrix is used to calculate some criteria characterizing the transportation network quality, such as traveling times, waiting times at a stop or transport occupation. The reconstructed OD matrix always contains errors, which cause errors in the criteria values. How significant are these errors? This question can be answered using our criteria validating methodology, which is based on statistical analysis. It has been implemented at the urban bus transport system of Porto, STCP, allowing the evaluation of the transportation network quality under a number of criteria and guaranteeing rigorous results.  相似文献   

19.
Nonlinear behavior of jacket platforms is important in both design and rehabilitation issues that depends on the bracing arrangement. Both ductility and strength of the structures derived from pushover analysis are highly related to configuration of the braces. Considering a suitable criterion such as constant weight or constant stiffness and period of the structure in all arrangement cases, one can compare the capacity curves and find the best configuration. In this paper a simple logical method for investigating the strength and ductility of the jacket structure is presented, it is shown that global geometry and configuration of the braces are very important and effective in both strength and ductility parameters. Three parameters, normalized strength, normalized ductility and a combination of these two parameters are defined in order to have an engineering and practical index for comparing the results. At the end of the numerical discussion, the optimum configuration can be found. Such an investigation is very important in the initial design stage. Also, in assessment of existing platforms, it is very important to find the reliable strength and ductility of the structure. Such a study gives a deep view of this issue as well.  相似文献   

20.
Applying the welfare economic approach it is demonstrated what the effects of certain supply changes in the local public transport will be and the potential of innovative demand management measures are examined. Straighter bus routes would reduce the average travel time from door to door. The travel time on the buses decreases and the frequency increases, which reduces waiting times at bus stops. Using smaller buses and more of them would also increase the net benefit, but increase the need for subsidisation. The peak within the peak in the morning is hard to handle by price policy alone. Introducing a small variation of the start of the school-day for high-school pupils would make investment- and operation cost savings possible, and the inconvenience costs for the pupils could be limited. It is only during peak hours in the main direction of peak travel and in the critical section of the line that optimal price becomes high relative to the present level. Zero fares in off-peak will be social profitable, but an increase in subsidy is needed. An introduction of these policy changes would give rise to a net social benefit of 30 million SEK per year in Linköping.  相似文献   

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