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  • 1.
    Badia, Hugo
    et al.
    Serra Hunter Fellow, Department of Civil and Environmental Engineering, UPC – Barcelona Tech, Barcelona, Spain.
    Jenelius, Erik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Transport planning.
    Shared e-scooter micromobility: review of use patterns, perceptions and environmental impacts2023In: Transport reviews, ISSN 0144-1647, E-ISSN 1464-5327, Vol. 43, no 5, p. 811-837Article in journal (Refereed)
    Abstract [en]

    Recently, a new shared micromobility service has become popular in cities. The service is supplied by a new vehicle, the e-scooter, which is equipped with a dockless security system and electric power assistance. The relatively unregulated proliferation of these systems driven by the private sector has resulted in numerous research questions about their repercussions. This paper reviews scientific publications as well as evaluation reports and other technical documents from around the world to provide insights about these issues. In particular, we focus on mobility, consumer perception and environment. Based on this review, we observe several knowledge needs in different directions: deeper comprehension of use patterns, their function in the whole transport system, and appropriate policies, designs and operations for competitive and sustainable shared e-scooter services.

  • 2.
    Börjesson, Maria
    et al.
    KTH. Swedish Natl Rd & Transport Res Inst, Stockholm, Sweden..
    Eliasson, Jonas
    Stockholm City Transportat Adm, Stockholm, Sweden..
    Should values of time be differentiated?2019In: Transport reviews, ISSN 0144-1647, E-ISSN 1464-5327, Vol. 39, no 3, p. 357-375Article in journal (Refereed)
    Abstract [en]

    We explore the issue of differentiating the valuation of travel time savings (VTTS) in transport cost-benefit analysis, summarising and discussing theories forming the basis for arguments for and against VTTS differentiation. We stress some important implications, insights and consequences of different assumptions relating to these theories, many of which we feel have been underappreciated in much of the CBA literature and practice. We derive a welfare rule including a social cost for monetary redistributions and show the implications for how the VTTS can be defined in different choice situations. Crucially, the applicable VTTS definition depends on whether travel costs (fares) are under public control and to whom benefits accrue in the long run. In some choice situations, the VTTS should be controlled for differences in income, but it is important to always take into account differences in marginal utilities of time (e.g. across travel time components, modes and trip purposes). Using Swedish data, we show that controlling the VTTS for income differences changes the VTTS only slightly; the variation in VTTS across modes, trip lengths, trip purposes apparently stems primarily from differences in marginal utilities of time rather than income.

  • 3.
    Cats, Oded
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Transport planning. Delft Univ Technol, Fac Civil Engn & Geosci, Dept Transport & Planning, Delft, Netherlands.;Delft Univ Technol, Fac Civil Engn & Geosci, Dept Transport & Planning, Stevinweg 1, NL-2628 CN Delft, Netherlands..
    Identifying human mobility patterns using smart card data2023In: Transport reviews, ISSN 0144-1647, E-ISSN 1464-5327, article id 2251688Article in journal (Refereed)
    Abstract [en]

    Human mobility is subject to collective dynamics that are the outcome of numerous individual choices. Smart card data which originated as a means of facilitating automated fare collection has emerged as an invaluable source for analysing mobility patterns. A variety of clustering and segmentation techniques has been adopted and adapted for applications ranging from market segmentation to the analysis of urban activity locations. In this paper we provide a systematic review of the state-of-the-art on clustering public transport users based on their temporal or spatial-temporal characteristics as well as studies that use the latter to characterise individual stations, lines or urban areas. Furthermore, a critical review of the literature reveals an important distinction between studies focusing on the intra-personal variability of travel patterns versus those concerned with the inter-personal variability of travel patterns. We synthesise the key analysis approaches as well as substantive findings and subsequently identify common trends and shortcomings and outline related directions for further research.

  • 4.
    Eliasson, Jonas
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Lundberg, Mattias
    KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Do Cost-Benefit Analyses Influence Transport Investment Decisions?: Experiences from the Swedish Transport Investment Plan 2010-212012In: Transport reviews, ISSN 0144-1647, E-ISSN 1464-5327, Vol. 32, no 1, p. 29-48Article in journal (Refereed)
    Abstract [en]

    Cost-benefit analysis (CBA) for transport investments is particularly useful for situations where a large number of investments have to be ranked against each other. This study draws on experiences from the development of the Swedish National Transport Investment Plan 2010-21. We study how CBA results were used in the process of shaping the investment plan and what influence they had on investment decisions. In particular, we compare the planners' rankings versus the politicians' rankings. We find that planners' rankings of investments are influenced by benefit-cost ratios (BCRs), in particular for low and moderate BCRs, while the politicians' rankings are not. By interviewing planners about how CBA was used in the process, we clarify what role CBA actually played in the planning process. We find that not only did the CBAs play a role in investment selection, they also forced investment design to be more cost-efficient. Furthermore, we explore planners' implicit valuations, as revealed by their investment selection, finding that freight benefits were implicitly valued higher and traffic safety lower than the officially recommended CBA weights. Finally, we identify the most important areas for improvement of CBA state-of-practice methodology.

  • 5.
    Jonsson, Daniel
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport Science, Transport and Location Analysis.
    Berglund, Svante
    Almström, Peter
    Algers, Staffan
    KTH, School of Architecture and the Built Environment (ABE), Transport Science, Transport and Location Analysis.
    The Usefulness of Transport Models in Swedish Planning Practice2011In: Transport reviews, ISSN 0144-1647, E-ISSN 1464-5327, Vol. 31, no 2, p. 251-265Article in journal (Refereed)
    Abstract [en]

    This paper presents some experience from using transport models in Swedish planning practice. First we outline three recent examples of planning settings in which transport models have been put to extensive use. For the Swedish ‘national’ transport plan for the period 2010–2021, which was recently finished, the national transport model SAMPERS was used to compute costs and benefits for many investment projects. The second example concerns the ‘regional’ plan for Stockholm, where a similar but less detailed model, LuTRANS, was used to investigate different transport and land use scenarios. The third example discusses a recent study on the feasibility of introducing congestion charges in Gothenburg, where both a fixed demand approach and SAMPERS were used. Furthermore, the paper tries to help identify what model development can do to help improve the production of decision support through modelling. We argue that effectiveness and efficiency are key. The first is characterized by making sure that the right things are done and that they are done right. Efficiency, which is less often discussed in the literature, is framed in terms of doing things on time and doing them only once. The managing organization around a national model system can play an important role in helping users avoid redundant work. It is also a good idea to resist the temptation to use up all improvements in computing power for additional model features. There are many worthwhile analyses that are never done because of time constraints.

  • 6.
    Jonsson, Daniel K.
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment.
    Johansson, J.
    Indirect effects to include in strategic environmental assessments of transport infrastructure investments2006In: Transport reviews, ISSN 0144-1647, E-ISSN 1464-5327, Vol. 26, no 2, p. 151-166Article in journal (Refereed)
    Abstract [en]

    Indirect effects are important considerations when making consequence analyses in general and in strategic environmental assessments in particular of potential transport solutions and infrastructure plans. The primary objective of this paper is to emphasize the need for a deeper understanding of the long-term system effects of investments in transport infrastructure with a focus on the structuring effects that roads and railways have on society, e. g. altered transport patterns, altered settlement structures and changes in use of the built environment. Special attention is given to the following potential indirect effects: increased total transport volume, increased share of private motorists and truck transport, increased urban sprawl, and increased energy use in buildings. The conditions that determine the power of the effects are discussed and a number of key factors to be considered in transport infrastructure planning, especially in strategic environmental assessments, are suggested. Since many indirect effects emerge over time, an extended time perspective is of essence. Therefore, scenario techniques may be useful when analysing indirect effects in transport planning processes.

  • 7.
    Lin, Jingyi
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geodesy and Geoinformatics.
    Ban, Yifang
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geodesy and Geoinformatics.
    Complex Network Topology of Transportation Systems2013In: Transport reviews, ISSN 0144-1647, E-ISSN 1464-5327, Vol. 33, no 6, p. 658-685Article in journal (Refereed)
    Abstract [en]

    As a strategic factor for a country to survive in the global competition, transportation systems have attracted extensive attention from different disciplines for a long time. Since the introduction of complex network theory in the last decade, however, studies on transport systems have witnessed dramatic progress. Most roads, streets, and rails are organized as a network pattern, while link flows, travel time, or geographical distance are regarded as weights. In this article, the authors will present the current state of topological research on transportation systems under a complex network framework, as well as the efforts and challenges that have been made in the last decade. First, different kinds of transportation systems should be generalized as networks in different ways, which will be explained in the first part of this paper. We follow this by summarizing network measures that describe topological characteristics of transportation networks. Then we discuss the empirical observations from the last decade on real transportation systems at a variety of spatial scales. This paper concludes with some important challenges and open research frontiers in this field.

  • 8. Liu, Chengxi
    et al.
    Susilo, Yusak
    KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS. KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Traffic Research, CTR. KTH, School of Architecture and the Built Environment (ABE), Transport Science.
    Karlström, Anders
    KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS. KTH, School of Architecture and the Built Environment (ABE), Transport Science.
    Weather variability and travel behaviour - what we know and what we do not know2017In: Transport reviews, ISSN 0144-1647, E-ISSN 1464-5327, Vol. 37, no 6, p. 715-741Article in journal (Refereed)
    Abstract [en]

    Given that severe weather conditions are becoming more frequent, it is important to understand the influence of weather on an individual's daily activity-travel pattern. While some previously rare events are becoming more common, such as heavy rain, unpredicted snow, higher temperatures, it is still largely unknown how individuals will change and adapt their travel patterns in future climate conditions. Because of this concern, the number of research studies on weather and travel behaviour has increased in recent decades. Most of these empirical studies, however, have not used a cost-benefit analysis (CBA) framework, which serves as the the main tool for policy evaluation and project selection by stakeholders. This study summarises the existing findings regarding relationships between weather variability and travel behaviour, and critically assesses the methodological issues in these studies. Several further research directions are suggested to bridge the gap between empirical evidence and current practices in CBA.

  • 9.
    Prelipcean, Adrian Corneliu
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geodesy and Geoinformatics. KTH, School of Architecture and the Built Environment (ABE), Transport Science, Transport and Location Analysis.
    Gidofalvi, Gyözö
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geoinformatics.
    Susilo, Yusak
    KTH, School of Architecture and the Built Environment (ABE), Transport Science, Transport and Location Analysis.
    Transportation mode detection – an in-depth review of applicability and reliability2017In: Transport reviews, ISSN 0144-1647, E-ISSN 1464-5327, Vol. 37, no 4, p. 442-464Article in journal (Refereed)
    Abstract [en]

    The wide adoption of location-enabled devices, together with the acceptance of services that leverage (personal) data as payment, allows scientists to push through some of the previous barriers imposed by data insufficiency, ethics and privacy skepticism. The research problems whose study require hard-to-obtain data (e.g. transportation mode detection, service contextualisation, etc.) have now become more accessible to scientists because of the availability of data collecting outlets. One such problem is the detection of a user's transportation mode. Different fields have approached the problem of transportation mode detection with different aims: Location-Based Services (LBS) is a field that focuses on understanding the transportation mode in real-time, Transportation Science is a field that focuses on measuring the daily travel patterns of individuals or groups of individuals, and Human Geography is a field that focuses on enriching a trajectory by adding domain-specific semantics. While different fields providing solutions to the same problem could be viewed as a positive outcome, it is difficult to compare these solutions because the reported performance indicators depend on the type of approach and its aim (e.g. the real-time availability of LBS requires the performance to be computed on each classified location). The contributions of this paper are three fold. First, the paper reviews the critical aspects desired by each research field when providing solutions to the transportation mode detection problem. Second, it proposes three dimensions that separate three branches of science based on their main interest. Finally, it identifies important gaps in research and future directions, that is, proposing: widely accepted error measures meaningful for all disciplines, methods robust to new data sets and a benchmark data set for performance validation.

    Download full text (pdf)
    transport_reviews
  • 10. Sanchez-Diaz, Ivan
    et al.
    Georén, Peter
    KTH, School of Industrial Engineering and Management (ITM), Centres, Integrated Transport Research Lab, ITRL.
    Brolinson, Marta
    Shifting urban freight deliveries to the off-peak hours: a review of theory and practice2017In: Transport reviews, ISSN 0144-1647, E-ISSN 1464-5327, Vol. 37, no 4, p. 521-543Article, review/survey (Refereed)
    Abstract [en]

    This paper presents a comprehensive review of the literature on off-peak hour deliveries (OPHD). The review identifies different approaches and policy levers used in the past, such as the laissez-faire approach, a road pricing approach, an incentives approach, and a regulatory approach. The paper also identifies different delivery reception schemes discussed in the literature. The authors complement the theory with a synthesis of pilot tests and the analysis of a set of interviews with practitioners (from the public sector and other organisations) in charge of OPHD programmes. The results from this review show the potential benefits that these programmes could bring about, the challenges faced in the early stages - along with potential solutions - and the significant progress that has been made in this domain in the last decade. According to the review, the results from the pilot tests tend to be positive, suggesting the importance of these programmes to reach more efficient and sustainable transportation systems.

1 - 10 of 10
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