共查询到20条相似文献,搜索用时 15 毫秒
1.
《Transport Policy》2003,10(3):223-233
In 1978 Gunn published a seminal paper which explained why implementation of policy is so difficult. The paper set out 10 conditions, which should be satisfied if perfect implementation is to be achieved. Whilst it is clear that perfect implementation is not possible in the real world, and Gunn has subsequently been criticised for his ‘top-down’ approach to decision-making, these conditions do, nonetheless act as an effective framework through which to evaluate good practice in the implementation of urban transport policy instruments. Two urban transport policy instruments, which form an increasingly important element of the Government's strategy in the UK for reducing the demand for private transport as set out in a New Deal for Transport (DETR, 1998), are travel plans and road user charging. Travel plans are a relatively recent policy instrument in the UK and seek to reduce trips to work by car by providing, through individual employers, a targeted, integrated package of incentives and disincentives to influence commuters' choice of mode of travel to and from the workplace. Road user charging, whereby motorists are charged for the road space they use in urban areas, seeks to reduce the congestion problem via the price mechanism, and has a longer history in the UK. To date the implementation of travel plans in the UK has been more widespread than that of road user charging. It is fair to say, however, that the widespread implementation of both urban transport policy instruments is a complex and sensitive area for decision-makers.The aim of this paper is firstly, to analyse travel plans and road user charging in the UK with respect to the conditions for perfect implementation put forward by Gunn and secondly, to highlight the elements of good practice, pertinent to the implementation of road user charging, in the process of the implementation of travel plans. Overall, the paper uses Gunn's theoretical framework as a basis for recommendations for better decision-making that will aid the wider implementation of both travel plans and road user charging internationally. 相似文献
2.
《Transport Policy》2007,14(4):330-345
Road pricing, congestion charging, toll-systems and other road charging instruments are intensively discussed in many countries. Although many partial analyses of the consequences have been published, few overall socio-economic analyses have been carried out. The article presents such a socio-economic analysis of four different proposed road pricing schemes for the Copenhagen area. The purpose was to assess all benefits and costs involved, including impacts on traffic and environment, maintenance and financing costs as well as tax distortion effects. It was concluded that the socio-economic surplus of the projects depends crucially on the congestion level. With the current traffic level, road pricing will not yet be socially expedient in Copenhagen. However, if the opening year is postponed to 2015, the two most favourable schemes will turn positive. The analyses also showed that the magnitude of demand response by introducing road pricing is likely to have significant impact on the project surplus. This is an important observation because most short-term driven traffic models will then underestimate the projected surplus. Finally, it was found that the degree to which benefits outweigh costs depends considerably on the use of revenue. Although it may contribute to decreasing road congestion, recycling all of the revenue back to the transport sector turned out to be inefficient and costly. 相似文献
3.
Fiona Raj 《Transport Policy》2003,10(4):321
This paper looks at the ways in which transport can impact on social exclusion processes by examining how the introduction of road user charging may affect residents of Bristol. It gives an overview of the concept of transport and social inclusion/exclusion, describes key themes emerging from DfT-funded research conducted in the city and reflects on the importance of consideration of these themes to the policy's successful implementation. By exploring road user charging from both collective and individual perspectives, the paper illustrates how this congestion charging policy could promote social inclusion. 相似文献
4.
Zhijia Tan Hai Yang 《Transportation Research Part E: Logistics and Transportation Review》2012,48(5):958-975
A model is presented for analyzing Pareto-efficient build-operate-transfer toll road contracts. The formulation simultaneously allows maximizing social welfare and private profit when road users vary in their value-of-time (VOT). The failure rate and mean residual functions of the VOT distribution are used to characterize Pareto-efficient solutions. Service quality, measured in terms of the volume-to-capacity ratio, is shown to be better than, identical to, or lower than the socially optimal level depending on the curvature of the mean residual VOT function. The outcomes of various regulatory regimes are examined as well. 相似文献
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6.
E.A. Beukes M.J.W.A. Vanderschuren M.H.P. Zuidgeest 《Journal of Transport Geography》2011,19(3):452-460
Road planning practice relies almost exclusively on parameters related to traffic factors, such as private vehicle speeds and volumes. In many developing countries the requirements for public transport and non-motorised transport are not explicitly integrated into the planning process, despite the fact that these form the primary mode of transport for the majority of the population. This affects the mobility opportunities for these sectors of the population and contributes to poor road safety, especially with regards to pedestrians. The research outlined in the paper posits that, in order to assess the usage and needs of the road holistically, other factors related to the adjacent land uses, socio-economic characteristics of the population the road serves, and the environmental context within which the road is located, factors heavily in how the road is used and should, therefore, be considered within the planning process. The paper describes a methodology to include these factors in the planning of roads. The method attempts to prioritise amongst the five primary road based modes (public transport, car, freight, walking and cycling) based upon a combination of traffic and non-traffic factors. The method employed uses a geographic information system (GIS) based spatial multiple criteria evaluation (SMCE) model with inputs from widely available data sources such as census, household travel surveys, land use and environmental data to arrive at solutions for modal priorities. A case study is conducted along an arterial route in Cape Town, South Africa, providing infrastructure planning recommendations and audit possibilities for the future. Since weighting is an important driver in the SMCE process, a sensitivity analysis is conducted to investigate the effect of alternative weighting schemes on the outputs from the method. 相似文献
7.
This article discusses the fundamental design difficulties of the fully automated baggage system originally planned for the New Denver Airport, and their implications for airport and airline management. Theory, industrial experience, and the reality at Denver emphasize the difficulty of achieving acceptable standards of performance when novel, complex systems are operating near capacity. United Airlines will thus make the Denver system ‘work’ by drastically reducing its complexity and performance. Automated baggage systems are risky. Airlines and airports considering their use should assess their design cautiously and far in advance, and install redundant, supplemental systems from the start. 相似文献
8.
Mercedes Castro-Nuño José I. Castillo-Manzano 《International Journal of Sustainable Transportation》2018,12(3):205-217
There has been a structural change in mobility in major Spanish cities in recent decades, with a switch to the pattern followed in other countries in the area. A shift has taken place from a traditional Mediterranean model to a North American city stereotype, with uncontrolled motorization and major implications for public health. This article specifically analyzes negative road safety-related externalities that result from this process, given that the trend seems to show a steady decline in road safety accidents on urban roads in Spain, with major differences among NUTS-3 provinces. The objective is to evaluate the factors that empirically explain these differences for the 2003–2013 period using a panel data analysis. Results show that a key role is played by urban development variables, such as population density and improvements in health services, with advances linked to more accessible and sustainable urban transportation, such as the Smart City concept. Not only does this article close a gap in the literature, but the findings can also serve as a practical guide for the development and implementation of urban mobility and road safety plans, and reveals the special needs of the most vulnerable groups. 相似文献
9.
The paper deals with a quantitative analysis on the competitiveness of intermodal transport, based on Motorways of the Sea (MoS), in comparison with all-road transport. This analysis is applied to MoS routes connecting the Italian mainland with Sicily. The study involves: a detailed intermodal network model which compares monetary costs and travel times from all relevant origins in the mainland to all relevant destinations in Sicily; and a survey carried out at some representative trucking firms operating to/from Sicily. The aim of the interviews has been: on one side to make a comparison between the theoretical and actual mode of transport and routes taken, and in case they are different, to understand the reasons of the discrepancy; on the other side to determine what are the main aspects taken into account by trucking companies in their modal choice, in order to understand how the competiveness of MoS against road transport can be improved. The results of the analysis show that the modal choice is affected by several elements: monetary costs and travel times; reliability of MoS routes; availability of MoS routes; MoS routes frequencies; but it resulted from the interviews that monetary costs and travel times are the most important factors considered by trucking companies in the modal and route choice. This study has also shown that an improvement of MoS routes on the Italian Adriatic side is necessary: actually, a strong reason for which in Italy MoS traffic is still a small percentage of road traffic is the low number of MoS routes currently in operation and their low frequency. This analysis could help decision makers, and maritime operators, to efficiently invest in the improvement of MoS routes. Moreover, this analysis, developed for an Italian case study, can be applied to other European and Mediterranean scenarios. 相似文献
10.
This paper investigates joint road charging schemes in a public-private partnership (PPP) network by simultaneously taking into account Cournot-Nash (CN) players and user equilibrium (UE) players. Each joint scheme comprises a tradable credit plan for public roads and a regular tolling plan for private roads. We show that, under UE-CN mixed equilibrium, there exist anonymous nonnegative joint schemes that can support a system optimum link flow pattern. By using preemptive approach, we further design three bi-objective optimization models with hybrid implementation of tradable credit and road pricing. Numerical examples demonstrate that the proposed methods are effective in managing PPP networks. 相似文献
11.
Supply chain leading models of building charging stations: Leaders,subsidy policies,and cost sharing
Tian Wang 《International Journal of Sustainable Transportation》2019,13(3):155-169
Consumer willingness to pay for electric vehicles (EVs) is severely limited by their driving range. The expansion of a charging network could alleviate this dilemma. This paper focuses on determining whether the manufacturer or the dealer is more suitable to extend charging network. In scenario 1 (wholesale price is exogenous), M-Investing (the manufacturer invests on charging stations) better facilitates EV adoption at the early stage of EV market. By contrast, D-Investing (the dealer invests on charging stations) better facilitates the EV adoption when the market becomes mature. However, neither of the two investors have an incentive to offer building investment. In scenario 2 (wholesale price is a decision made by the manufacturer), M-Investing is consistently better than D-Investing in terms of facilitating EV adoption. The manufacturer is voluntary even with high building costs. In addition, we address two subsidy policies: producer subsidy and consumer subsidy, to determine which is more effective in facilitating EV adoption in M-Investing and D-Investing, respectively. Moreover, we extend our model by allowing cost sharing between the manufacturer and the dealer. We observe some cases in which the profit and the EV adoption level are improved. 相似文献
12.
《Transportation Research Part E: Logistics and Transportation Review》2008,44(6):1162-1174
A proposal for evaluating the attractiveness of the first European ro–ro service based on traditional bogies is presented, to estimate to what extent its realization is able to influence distribution of freight transport, between the traditional road transport and the new alternative available, through the specification and calibration of a modal split model (Logit), based on random utility theory. For the scenarios analyzed, the model estimates that nearly 4% of the total shipments would use the ro–ro service, when its frequency is four journeys per day, and about 9%, in the case of increased frequency to ten. 相似文献
13.
《Transport Policy》2006,13(5):379-385
This paper discusses if it is appropriate to include the benefits that offenders get by violating the law in cost-benefit analyses of police enforcement, in the form of a loss of benefits from violations. The discussion is cast in the context of traffic law violations, a very common type of crime, which is usually not very strongly condemned from a moral point of view. Three options for cost-benefit analysis of traffic police enforcement are compared. The three options differ with respect to the treatment of (a) violator benefits from violations, and (b) outlays for traffic tickets given to violators. The implications of the choice of option are shown by means of four case illustrations, all referring to different types of traffic police enforcement in Norway. It is shown that every type of enforcement becomes less cost-effective when violator benefits are included in cost-benefit analyses. The legitimacy of including violator benefits as a benefit to society is discussed. It is concluded that, as far as traffic violations are concerned, benefits obtained by committing violations of the law cannot be treated as a legitimate societal benefit. 相似文献
14.
This research examines the evolution of the distribution across 187 countries of mortalities per 100,000, disability-adjusted life years (DALYs), years of life lost (YLL) and years lived with disabilities (YLD) due to road traffic injuries between 1990 and 2010 using the distribution dynamics approach. Fatal and non-fatal burdens of road traffic injuries display contrasting external shape dynamics and intra-distribution mobility. The results show that while the shape of the global distribution of YLD due to road traffic injuries (RTIs) has become tighter over time, the cross-country distributions of mortalities, DALYs, and YLL from road crashes have become more dispersed. The implication of the results is that international efforts should make a priority of targeting the prevention of a greater spreading out of the distribution of the burden of fatal RTIs. The exchange of relative positions within the distributions is substantial, but there is no linear relationship between a country's change in its relative position for the burden of fatal and non-fatal RTI distributions. Thus, further research is needed to determine whether policy interventions dealing with the burden of fatal RTIs also alleviate the burden of non-fatal RTIs and vice versa. 相似文献
15.
《Transport Policy》2007,14(3):258-267
Traffic management in National Parks is necessary in order to avoid the negative effects of car traffic. Implementing traffic management measures can be difficult, due to public resistance or other problems. A research project in the Veluwezoom National Park in The Netherlands shows that there are two important reasons for problematic implementation. The first reason is a lack of knowledge about the recreational use of the area. The second reason is the interdependence of actors involved. Both aspects need to be considered and related to each other in order to make more realistic traffic management plans. 相似文献
16.
Henning Lauridsen 《Transport Policy》2011,18(1):85-91
Road tolling has been used extensively for funding of national roads in Norway since 1982. The article, which is primarily based on review of literature, identifies the impacts of tolling in four key policy areas: economic efficiency, regional development, regional redistribution and democracy. Toll financing may change the ranking of projects but does hardly reduce construction costs. The recurrent budget has been quite stable and toll revenues therefore represent net additional resources for road investment. Regionally, tolling has led to a shift of road investments to more central areas. Tolling has increased local political influence compared to national influence. 相似文献
17.
This paper reports the results of an empirical analysis of the Kuznets curve relationship between per capita income and road fatalities across 60 countries over the period 1972-2004. This relationship hypothesizes that the number of road fatalities increases with increasing motorization in the early stages of economic growth. Eventually, due to advances in technical, policy and political institutions, it declines as per capita income increases. The quality of political institutions as well as improvements in medical care and technology are hypothesized to impact road fatalities. Results indicate evidence of a Kuznets curve relationship between per capita income and road fatalities for both highly developed and less developed countries and support our hypothesis that changes in institutional quality and medical improvements underlie the Kuznets relationship. The evidence presented in this study suggests that lowering corruption levels as well as improvements in medical care and technology would help to reduce road fatalities. 相似文献
18.
《Transport Policy》2007,14(5):388-398
This article explores the potential of a target analysis method in acting as a link between policy objectives, targets, measures and their implementation in order to intensify the policy process. The context is the information-abundant policy environment where feasibility conditions keep constantly changing. The policy process frameworks for bounded rationality and experiential incrementalism are used as a basis for exploration and complemented with our target analysis, which is tested with a case of Finnish transport policy targets. We argue that by studying synergies and conflicts as well as other dependencies between the targets presented in policy statements and also by examining the possible support or opposition of main stakeholder groups for the policy measures to meet the targets, we can appraise the potential success of the transport policy implementation. Our case study, the Finnish transport policy, presented targets with quite a clear direction, with a lot of weak synergies and only a few serious conflicts. The implementation of the policy measures, presented to meet these targets will, however, be demanding because of several reasons related to the challenges to governance that are emerging from the complex and continually changing linkages between and among transport (policy) problems, targets and their consequences. The method we presented and tested proved to be useful in bringing transport policy targets closer to policy implementation by considering policy measures to meet the targets and their acceptance as a part of the target or objective analysis process. The findings suggest that linking these often detached parts of the policy process together the co-ordination will be improved and the process hence intensified. The target analysis presented could act as an originator for a more open, interactive and particularly systematic process in transport policy formulation, leading through social learning into a more successful implementation of policies. 相似文献
19.
《Transport Policy》2006,13(3):204-216
The British government was planning to introduce a system of road-user charging for lorries in 2008. In July 2005, it decided to abandon these plans and incorporate the development of a charging scheme for trucks into a future road pricing system for all categories of traffic. This paper examines the objectives of the proposed lorry road-user charging scheme in the UK and argues that the government's plans for LRUC would have been inappropriate. An alternative method of road-user charging for lorries is proposed which would meet the main objectives of LRUC at much lower cost, disruption and risk and act as an interim measure until it is possible, technically and politically, to introduce general road pricing in the UK. 相似文献
20.
Masashi Miyagawa 《Journal of Transport Geography》2011,19(4):591-595
This paper formulates a continuous model of a grid road network for determining the optimal hierarchical system of road networks. The hierarchical system is represented as the proportions of area taken up by roads at each level of the hierarchy. The objective is to derive the optimal ratio of road areas that minimizes the total travel time. The model explicitly incorporates inward, outward, and through traffic as well as inner traffic to examine how traffic composition affects the optimal ratio of road areas. The result reveals that the optimal ratio of major arterial roads increases with inward, outward and through traffic. 相似文献