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  • 51.
    Jenelius, Erik
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Transport Science, Traffic and Logistics. KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Redundancy importance: Links as rerouting alternatives during road network disruptions2010In: Procedia Engineering, 2010, Vol. 3, p. 129-137Conference paper (Refereed)
    Abstract [en]

    We consider the importance of road links as backup alternatives when other links in the network are disrupted (due to events such as floods, landslides, car accidents etc.). While traditional measures of link importance capture a link’s role for transport efficiency under normal conditions, we are interested in a link’s role for transport robustness and network redundancy. We refer to this concept as redundancy importance and introduce two measures based on traffic flow and disruption impacts (here operationalized as travel delay), respectively. In the flow-based measure we consider the net traffic flow that is redirected to the studied link when other links are closed. In the impact-based measure we also consider the impact that is avoided through the studied link, i.e., how much worse the next-best backup alternatives would be if the studied link itself would not be available. We argue that although a link may not be important under normal conditions, a higher prioritization in resource allocations could be justified if many users could come to rely on it in extraordinary situations. Hence, these measures should be useful as quantitative decision support in the allocation of resources for investments and maintenance as well as for setting up pre-emptive rerouting plans. The measures are applied in a case study of northern Sweden and the general characteristics that determine which links are redundancy important are identified.

  • 52.
    Jenelius, Erik
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics, Transport and Location Analysis.
    Spatial patterns of road network vulnerability2007In: 9th Nectar Conference, Porto, Portugal, May 9–12, 2007, 2007Conference paper (Refereed)
  • 53.
    Jenelius, Erik
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    User inequity implications of road network vulnerability2010In: Journal of Transport and Land Use, ISSN 1938-7849, Vol. 2, no 3/4, p. 57-73Article in journal (Refereed)
    Abstract [en]

    An important purpose of the road transport system is to allow people to commute in efficientand reliable ways. For various undesired reasons, however, link capacities are sometimes reduced or linksare closed completely. To assess and reduce the risk of such events, a key issue is to identify road linksthat are particularly important, i.e. roads where disruptions would have particularly severe consequences. This paper presents a method for incorporating user equity considerations into a road link importancemeasure. As a complement to measuring the total increase in vehicle travel time, we also measure thedisparity in the distribution among individual users. These two components are combined to form anequity-weighted importance measure. We study the properties of this measure both analytically and in afull-scale case study of the Swedish road network. A main result is that increasing the weight put on theequity aspect transfers importance from the main roads to smaller local roads. The use of the measure intransport policy and planning is discussed.

  • 54.
    Jenelius, Erik
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Mattsson, Lars-Göran
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Levinson, David
    The traveler costs of unplanned transport network disruptions: An activity-based modeling approach2010Conference paper (Refereed)
  • 55.
    Jenelius, Erik
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Petersen, Tom
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Mattsson, Lars-Göran
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Importance and exposure in road network vulnerability analysis2006In: Transportation Research Part A: Policy and Practice, ISSN 0965-8564, E-ISSN 1879-2375, Vol. 40, no 7, p. 537-560Article in journal (Refereed)
    Abstract [en]

    The reliability and vulnerability of critical infrastructures have attracted a lot of attention recently. In order to assess these issues quantitatively, operational measures are needed. Such measures can also be used as guidance to road administrations in their prioritisation of maintenance and repair of roads, as well as for avoiding causing unnecessary disturbances in the planning of roadwork. The concepts of link importance and site exposure are introduced. In this paper, several link importance indices and site exposure indices are derived, based on the increase in generalised travel cost when links are closed. These measures are divided into two groups: one reflecting an "equal opportunities perspective", and the other a "social efficiency perspective". The measures are calculated for the road network of northern Sweden. Results are collected in a GIs for visualisation, and are presented per link and municipality. In view of the recent great interest in complex networks, some topological measures of the road network are also presented.

  • 56.
    Jonsson, R. Daniel
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics, Transport and Location Analysis.
    Analysing sustainability in a land-use and transport system2008In: Journal of Transport Geography, ISSN 0966-6923, E-ISSN 1873-1236, Vol. 16, no 1, p. 28-41Article in journal (Refereed)
    Abstract [en]

    In this paper we investigate some implications of including intergenerational fairness when appraising the impact of transport policy on an urban land-use and transport system. The paper also reports on the implementation of an appraisal framework where the main elements of sustainability is taken into account. The land-use and transport system of Stockholm is modelled using the land-use model IMREL, paired with the state-of-the-art transport model SAMPERS.The intergenerational fairness is handled by modifying the normal exponential discounting of a cost–benefit analysis. We form the weighted sum of a normal cost–benefit analysis and the horizon year costs and benefits without discounting. The relative weight put on each term is governed by an intergenerational parameter, α. What we do is let the undiscounted horizon year represent the long term future, so setting α = 0 means using an ordinary exponential discount rate. α = 1 on the other hand puts all weight on the long term future, ignoring costs and benefits for the years up to the horizon year. We experiment with some values of the intergenerational parameter to see how it affects the ranking of combinations of two policy instruments.Optimisation is employed to further analyse the implications of using combinations of instruments. A problem that arises when packaging instruments into strategies is that the number of possible combinations gets large. Optimisation can be of use to find the interesting ones. Our modelling package is fairly detailed, which means long computations, and generally not suited for automated optimisation. Instead we use a response surface method, where the objective function is approximated with a quadratic function, which is fitted to model computed values of the objective function by regression.

     

  • 57.
    Jonsson, R. Daniel
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics, Transport and Location Analysis.
    Analysing Sustainable Urban Transport and Land-Use: Modelling tools and appraisal frameworks2008Doctoral thesis, comprehensive summary (Other scientific)
    Abstract [en]

    Sustainable development and climate change is high on the agenda for most cities around the world today. Urban transport is at the heart of these changes. Increasingly, it is recognised that not only is the emission of pollutants and greenhouse gases a problem, but also the detrimental effects of congestion and social exclusion. In order to address these issues, it will be necessary for cities to make strategic long term decisions regarding the future infrastructure and land use, not only in terms of what will be built, but also on measures that affect how these systems are used.This thesis is focused on the decision support tools that we need in order to make well informed decisions. Models that predict the performance of future scenarios, and appraisal frameworks that help evaluate whether these outcomes are desirable or not. The first two papers experiment with different ways of bringing some aspects of sustainability into the appraisal frameworks used to analyse long term strategies. Paper I addresses intergenerational fairness, and Paper II focuses on the emission of greenhouse gases. Paper III develops a model, Scapes, that can help us to better understand the daily travel behaviour, through an activity based approach. By explicitly modelling space-time constraints, and travel time uncertainty in a microeconomic framework, we can get a better understanding of how people can respond to, and value, changes in the transport system. Papers IV and V describe a new integrated land use and transport model, LandScapes.The policy implications from the studies in Papers I, II, and V are that it will be very difficult for Stockholm to reduce its emissions of CO2. Particularly, predicted economic and population growth will inevitably lead to more transport. It is likely that a range of different policies will be necessary to solve that problem. At the same time, we must not forget that decreasing CO2 emissions, although important, is not the only objective Stockholm has. To cope with the increasing travel demand from a growing population, it may well be necessary to build new infrastructure as well. This thesis does not prescribe any such relative valuation between conflicting objectives. It only helps bring them to the fore.

  • 58.
    Jonsson, R. Daniel
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    LandScapes: A transport and land use model of StockholmArticle in journal (Other academic)
  • 59.
    Jonsson, R. Daniel
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Policy application and validation of the transport and land-use model LandScapesArticle in journal (Other academic)
  • 60.
    Jonsson, R. Daniel
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Karlström, Anders
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    SCAPES: A dynamic microeconomic model of activity schedulingArticle in journal (Other academic)
  • 61.
    Karlström, Anders
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Computational approaches to deal with the curse - applications from transport economics2010Conference paper (Other academic)
  • 62.
    Karlström, Anders
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Developing new multivariate generalized extreme value models: Theory and some applications2008In: Transportation Research Part B: Methodological, ISSN 0191-2615, E-ISSN 1879-2367Article in journal (Other academic)
  • 63.
    Karlström, Anders
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Value of time in a dynamic microeconomic framework: theory and example from Stockholm congestion charges2008Conference paper (Other academic)
  • 64.
    Karlström, Anders
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Where is time in models of value of time?: An activity- and scheduling model approach2010Conference paper (Other academic)
  • 65.
    Karlström, Anders
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Eliasson, Jonas
    WSP, SWEDEN.
    Levander, A.
    On the theoretical valuation of marginal business travel time savings2007In: Proceedings of the European Transport Conference, 2007Conference paper (Refereed)
    Abstract [en]

    The purpose of this paper is to theoretically derive a measure of the medium (or long) run social benefit from a marginal travel time saving for longer (at least one day) business trips. In the applied literature, two different approaches have been suggested. In the so-called Hensher approach, a weighted average of the wage-rate and the valuation of leisure time is used. In the so-called wage-plus (or cost-saving approach), the wage rate, plus labour-related overhead, is used. While the weighted average (Hensher) approach is intuitive for valuation of short-run effects, the wage-plus approach as such is theoretically justifiable only under very restrictive assumptions. In this paper we relax a number of these restrictions. In particular, we allow for different marginal productivities at the normal workplace and at the destination. We also explicitly model the monetary travel cost of the business trip and allow that the business trips and commuting trips, as defined, take place on separate days. On the margin, the employees working hours are allocated to the business trip destination as long as the marginal benefit exceeds the marginal cost. The derived formula may be viewed as a simple modification of the wage-plus approach, given the assumption that the direct disutility of travel and working (at the normal workplace) is equal. Under these assumptions, the wage-rate is a lower bound for VTTS, and will only be correct if the business trip has the same travel cost in time and money as the normal commuting trip. We also discuss how to find an estimate of the valuation if this simplifying assumption does not hold. Using stated preference and revealed preference data, we show that the formulas predictions regarding how the value of time should vary with travel time, travel cost, income etc. are confirmed. For example, the formula predicts that the value of time should increase not only with income, but also with increasing travel time and travel cost. This is confirmed by estimating the value of time on two separate data sets. Intuitively speaking, this is because accepting high travel times and travel costs is a signal of high productivity at the destination and hence, the value of a time saving (which can be used to stay longer at the destination of make more trips to it) should be higher. As a contrast, the wage-plus approach only relates the value of time to income (and various overhead costs). For the covering abstract see ITRD E137145.

  • 66.
    Karlström, Anders
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics, Transport and Location Analysis.
    Franklin, Joel
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics, Transport and Location Analysis.
    Behavioral Adjustments and Equity Effects of Congestion Pricing: Analysis of morning commutes during the Stockholm Trial2009In: Transportation Research Part A: Policy and Practice, ISSN 0965-8564, E-ISSN 1879-2375, Vol. 43, no 3, p. 283-296Article in journal (Refereed)
    Abstract [en]

    This paper assesses the horizontal and vertical equity effects of the Stockholm Trial with Congestion Pricing for morning commuters, in terms of both travel behavioral adjustments and welfare effects, as a result of the toll's direct effects and the behavioral adjustments. We consider specifically two behavioral adjustments: mode choice and departure time choice. Initial car drivers crossing the toll cordon had a 15 percentage-points higher rate of switching to public transit as compared with those not crossing the cordon. We also find some evidence of peak spreading. in particular toward a later departure time, as a result of the charging scheme, but most people choose a departure time within 15 min both before and during the trial. In the welfare analysis, we found no clear pattern of increasing burden by either increasing income or decreasing income, and the increase in the Gini Coefficient was insignificant. We also found no significant difference in either the mode-switching behavior or the average welfare effect for women versus for men.

  • 67.
    Karlström, Anders
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Frejinger, Emma
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Fosgerau, Mogens
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    A dynamic discrete choice approach for consistent route choice model estimation2009Conference paper (Other academic)
  • 68.
    Karlström, Anders
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Palme, Mårten
    Department of Economics, Stockholm University.
    Svensson, Ingemar
    Social Insurance Agency, Stockholm.
    The employment effect of stricter rules for eligibility for DI: Evidence from a natural experiment in Sweden2008In: Journal of Public Economics, ISSN 0047-2727, E-ISSN 1879-2316, Vol. 92, no 10-11, p. 2071-2082Article in journal (Refereed)
    Abstract [en]

    We study the effect of a reform of the Swedish disability insurance (DI) program whereby the special eligibility rules for workers in the age group 60 to 64 were abolished. First, we use a differences-in-differences approach to study changes in the disability take-up as compared to the age group 55 to 59. Then, we use a similar approach to study to what extent the employment effect of the reform is “crowded out” by an increase in the utilization of the sickpay insurance (SI) and/or the unemployment insurance (UI). In an extended analysis, we study the effect of firm closure on employment and the utilization of different labor market insurance programs in different age groups before and after the reform.

  • 69.
    Karlström, Anders
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Ståhle, Alexander
    KTH, School of Architecture and the Built Environment (ABE), Architecture.
    Marcus, Lars
    KTH, School of Architecture and the Built Environment (ABE), Architecture, Urban Design.
    Koch, Daniel
    KTH, School of Architecture and the Built Environment (ABE), Architecture.
    Mattsson, Lars-Göran
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Place, space syntax and attraction-accessibility2009In: Proceedings of the Seventh International Space Syntax Symposium, 2009Conference paper (Refereed)
  • 70.
    Karlström, Anders
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Waddell, P.
    Fox, D.
    Scaling up the microeconomic dynamic discrete choice model of activity-based scheduling2009In: 2009 Proceedings European Transport Conference, 2009Conference paper (Other academic)
    Abstract [en]

    In this paper, the author develops a dynamic microeconomic discrete choice model in order to model mode choice and departure time in an activity-based framework. In a dynamic model, the order of activity matters and the value of time will be dependent on clock-time, preferences, previous choices and future opportunities during the day. However, the curse of dimensionality is a real problem when dealing with real-sized problems. In this paper the author argues that the effective dimension often can be reduced. Earlier evidence suggest that the effective dimension may be quite manageable. The author uses the Restricted Boltzmann Machine (RBM) to explore the dimensionality of reduction techniques. After having tuned the learning parameters of this model, the authors show that a one-layer RBM is able to find good “activity skeletons”, i.e. reasonable activity patterns that match the data. These one-layer skeletons can then be used to train a two-layer RBM which is fined-tuned to fit the data even better. The results demonstrate that the dimension can be brought down such that the model can be solved for real-sized problems.

  • 71.
    Kreamer Fults, Kandice
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Börjesson, Maria
    KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Drivers of change in travel patterns: Stockholm 1986-20042010Conference paper (Other academic)
  • 72.
    Kreamer Fults, Kandice
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Isacsson, Gunnar
    Karlström, Anders
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Gender differences in value of commuting time- evidence from a household model of subjective life satisfaction in Sweden2009In: Proceedings of Transportation Research Board, Research in Women's Travel Issues Conference, 2009Conference paper (Refereed)
  • 73.
    Langbroek, J. H. M.
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport Science, System Analysis and Economics.
    Franklin, Joel P.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). 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, Transport Planning, Economics and Engineering.
    Susilo, Yusak O.
    KTH, School of Architecture and the Built Environment (ABE), Transport Science.
    Change towards electric vehicle use in Greater Stockholm2017In: European Journal of Transport and Infrastructure Research, ISSN 1567-7133, E-ISSN 1567-7141, Vol. 17, no 3, p. 306-329Article in journal (Refereed)
    Abstract [en]

    This paper studies electric vehicle (EV) adoption in Greater Stockholm in Sweden using the Transtheoretical Model of Change (TTM) and the Protection Motivation Theory as a framework and considers socio-cognitive, behavioural and socio-economic attributes that may influence the process towards electric vehicle use. TTM considers behavioural change as a process consisting of five stages-of-change rather than as an event. Some key findings were made: (1) from the earlier to the later stages-of-change, the attitude towards EVs becomes more positive, the knowledge about EVs increases and the self-efficacy is consistently increasing. (2) The threat appraisal and response efficacy of EVs increase from stage to stage in the stages prior to the actual change but have a lower level for the stages after the change. (3) The explanatory power of regression models modelling both pre-contemplation and all stages-of-change increases significantly when incorporating socio-cognitive variables such as self-efficacy, threat-appraisal, response efficacy and attitudes towards EVs. (4) The modal share of the car is consistently increasing throughout the stages-of-change. The results indicate that policy measures aiming at increasing knowledge and self-efficacy of car drivers related to EV use can stimulate electric vehicle adoption. Also, the relative advantages of EVs for car drivers should get more attention rather than only emphasizing the environmental advantages.

  • 74.
    Lindberg, Per
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Aspects of static multi-class traffic equilibria under congestion pricing2010Report (Other academic)
  • 75.
    Lindberg, Per Olov
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Aspects of Static Multi-Class Traffic equilibria under Congestion Pricing2010Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    Congestion charging is a now accepted means of influencing traffic to behave in a more socio-economic optimal way, like e.g. in the Stockholm project. Already early work, in the 1920’s, showed that road use can be inefficient due externalities, i.e. that users don’t experience their own (negative) effect on other users: an extra car on a traffic link causes delays for other cars, but the driver himself does not experience this cost.In the 1950’s it was further shown - for a congested road network with homogeneous users – that if each user is charged a toll equal to the total value of time loss incurred on other users of the network, then -if we have fixed travel demand - this will induce an equilibrium that is system optimal in the sense that the total cost of network usage is minimal (assuming that all users have fixed and identical time values).  But toll charges need to be levied in monetary units, and different travelers have different values of time. Therefore, to account for the effects of tolls, and to be able to compute equilibria, one needs to introduce different user classes, differing in their time values.

    In this thesis, consisting of four papers, we study congestion pricing of road networks with users differing only in their time values. In particular, we analyze marginal social cost (MSC) pricing, a tolling scheme that charges each user a penalty corresponding to the value of the delays inflicted on other users, as well as its implementation through fixed tolls.

    Paper III contains the main theoretical work of the thesis. In that paper we show that the variational inequalities characterizing the equilibria in question can be stated in symmetric or non-symmetric forms. The symmetric forms correspond to optimization problems, convex in the fixed-toll case and non-convex in the MSC case, which hence may have multiple equilibria. The objective of the latter problem is the total value of travel time, which thus is minimized at the global optima of that problem. Implementing close-to-optimal MSC tolls as fixed tolls leads to equilibria with possibly non-unique class specific flows, but with identical close-to-optimal values of the total value of travel time. Finally we give an adaptation, to the MSC setting, of the Frank-Wolfe algorithm, which is further applied to some test cases, including Stockholm.

    Paper I is an early application using Frank-Wolfe, after having realized the possibility to symmetrize the problem.

    Paper II gives a convexification of non-convex equilibrium problem for MSC tolls. We have used these convexifications to compute lower bounds when computing equilibria.

    Paper IV is a short note commenting some flaws in two papers by Dial on MSC tolls.

  • 76.
    Lundberg, Mattias
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Eliasson, Jonas
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Hamilton, Carl
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Medfinansiering med vägavgifter: transportekonomiska argument för och emot2010Report (Other academic)
  • 77.
    Mattsson, Lars-Göran
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Railway capacity and train delay relationships2007In: Critical Infrastructure: Reliability and Vulnerability / [ed] Murray, A. and Grubesic, T.H., Springer Berlin/Heidelberg, 2007, p. 129-150Chapter in book (Refereed)
    Abstract [en]

    Reliable transport infrastructure systems are vital for the functioning of modern societies. People in their everyday lives, as well as trade and industry, plan their activities on the assumption that it is possible to travel and to transport goods between different places in a fast, safe and predictable way. Over time the development of the transport infrastructure has allowed people and goods to be transported at higher speeds. This has contributed, for good or bad, to a spatial reorganisation of many human activities on a local as well as a global geographical scale. Transport systems, as all technical systems, are more or less reliable, however. This is an important aspect of the quality of transport services, which may have spatial implications. In many big cities capacity shortages lead to congestion and unreliable transports that hamper the development. In rural areas lack of alternative transport routes, in case the main route has to be closed for some reason, contributes to make these areas less attractive for location.

  • 78.
    Mattsson, Lars-Göran
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Samhällsekonomisk analys av ett huvudvägnät för godstransporter: En idédiskussion och förslag till upplägg2008Report (Other academic)
  • 79.
    Näsman, Per
    et al.
    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 and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Holmberg, Sören
    Wännström, Kent
    Valu 2009: SVT:s vallokalundersökning EU-parlamentsvalet 20092009Report (Other academic)
  • 80.
    Petersen, Tom
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Analys av trängselavgifternas effekter på handeln2009Report (Other academic)
  • 81.
    Petersen, Tom
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Identification of key attributes for bike-sharing systems2010Report (Other academic)
  • 82.
    Petersen, Tom
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Lånecykelanvändningen i Stockholm (The use of bike sharing in Stockholm)2010Conference paper (Other academic)
  • 83.
    Petersen, Tom
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Giles, Neal
    Key attributes for bike-sharing. Practical implications - Factsheet2010Report (Other academic)
  • 84.
    Petersen, Tom
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Jenelius, Erik
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Traffic and Logistics (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Mattsson, Lars-Göran
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Utsatthet och betydelse i sårbarhetsanalyser av vägnät \ Exposure and importance in road network vulnerability analysis: En fallstudie av norra Sverige \ A case study of Northern Sweden2006Conference paper (Other academic)
  • 85.
    Petersen, Tom
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Robèrt, Markus
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Urban and Regional Studies.
    Bike sharing in ten European countries, module 9: Sweden2009Report (Refereed)
  • 86.
    Robèrt, Markus
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment.
    Jonsson, Daniel. R
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics, Transport and Location Analysis.
    Assessment of transport policies toward future emission targets: A backcasting approach for Stockholm 20302006In: Journal of Environmental Assessment Policy and Management, ISSN 1464-3332, E-ISSN 1757-5605, Vol. 8, no 4, p. 451-478Article in journal (Refereed)
    Abstract [en]

    Stockholm has set a target for greenhouse gas emissions in the year 2030, based on the United Nation's (IPCC) recommendations for an acceptable CO2 level in the atmosphere. In this study we use a backcasting framework to analyze a range of specific transport policies and fuel technology related developments with respect to the emission target. Our study employs a transport modelling system, traditionally used for forecasts, to quantify the impacts of various travel demand measures (TDM). Our study shows that the change in travel demand, induced by various travel policies, will not suffice on its own to reach the target. Even if fuel price is tripled, a substantial share of renewable fuels is required for target achievement. While our study shows that travel demand measures have a fairly small effect on CO2 emissions, it also hints at other compelling reasons for introducing such measures. Constructive strategies for the transport system would not only contribute to reduce risks with climate change. Even small reductions of transport volumes might imply large socio economic savings in traffic related costs, reduced emissions of substances with health impacts, fewer accidents, shorter travel times and higher travel time reliability. These aspects are arguably all part of a sustainable transport development.

  • 87.
    Ståhle, Alexander
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Architecture.
    Marcus, Lars
    KTH, School of Architecture and the Built Environment (ABE), Architecture.
    Karlström, Anders
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Koch, Daniel
    KTH, School of Architecture and the Built Environment (ABE), Architecture.
    Place Syntax: geographic accessibility with visibility in GIS2009In: Environment and Planning, B: Planning and Design, ISSN 0265-8135, E-ISSN 1472-3417Article in journal (Refereed)
  • 88.
    Ståhle, Alexander
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Architecture.
    Marcus, Lars
    KTH, School of Architecture and the Built Environment (ABE), Architecture.
    Karlström, Anders
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics, Transport and Location Analysis.
    Koch, Daniel
    KTH, School of Architecture and the Built Environment (ABE), Architecture.
    Place syntax: Geographic attraction-accessibility analysis with axial linesIn: Environment and Planning, B: Planning and Design, ISSN 0265-8135, E-ISSN 1472-3417Article in journal (Other academic)
  • 89.
    Sundberg, Marcus
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics, Transport and Location Analysis.
    Dynamic Spatial CGE Frameworks - Specifications and simulationsManuscript (preprint) (Other academic)
  • 90.
    Sundberg, Marcus
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Dynamic Spatial CGE Frameworks - Specifications and simulations2005Report (Other academic)
  • 91.
    Sundberg, Marcus
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics, Transport and Location Analysis.
    Economic Effects of the Öresund Bridge - A spatial computable general equilibrium analysis.Manuscript (preprint) (Other academic)
  • 92.
    Sundberg, Marcus
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics, Transport and Location Analysis.
    Essays on Spatial Economies and Organization2009Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    This thesis concerns both static and dynamic modeling in a spatial computable general equilibrium setting. First, we have applied a static framework for the assessment of economic impacts of the Öresund bridge. Secondly, we make an attempt to enhance the static framework through the introduction of economic dynamics. Third, we introduce the STRAGO model, incorporating monopolistic competition, dynamics and additive transport costs. STRAGO is applied to the analysis of effects from a kilometer tax on freight. The last paper presents a framework for studying the division, or fragmentation of production. This framework uses the standard theory of monopolistic competition, with a production chain extension, through a recursive view of markets. The optimal level of fragmentation in such industries is studied.

  • 93.
    Sundberg, Marcus
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics, Transport and Location Analysis.
    Fragmenting Production in Monopolistically Competitive Industries.Manuscript (preprint) (Other academic)
  • 94.
    Sundberg, Marcus
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Km-taxes in spatial computable general equilibrium2010Conference paper (Other academic)
  • 95.
    Sundberg, Marcus
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics, Transport and Location Analysis.
    Spatial computable general equilibrium modelling: static and dynamic approaches2005Licentiate thesis, comprehensive summary (Other scientific)
    Abstract [en]

    This thesis concerns both static and dynamic modeling in a spatial computable general equilibrium setting. First, we have applied a static framework for the assessment of economic impacts of the Öresund bridge. Secondly, we make an attempt to enhance the static framework through the introduction of economic dynamics.

    In the first paper we study the economic impacts of the Öresund bridge. We aim to quantify regional welfare effects as well as effects on regional production and trade. We calibrate a static spatial computable general equilibrium model to economic data representing the Öresund region. In particular we have calibrated a pre-bridge barrier parameter which enables us to study possible barrier reduction effects from the bridge. We present results both as effects of cross strait transport cost reductions and of barrier reductions. It is found that the potential impacts of removing barriers to trade may outweigh the impacts solely due to reduced transport costs.

    In the second paper we consider different specifications of a dynamic spatial computable general equilibrium model. In particular we are interested in the effects of different, commonly used assumptions on transition dynamics of such a model. We have specified models with different assumptions regarding capital mobility, the utility specification of the households and assumptions regarding perfect foresight or myopia. A number of simulations have been performed with these models in order to observe policy responses and in order to be able to make specification comparisons of the different models based on those responses. We consider the time in takes for the dynamic models to converge toward the long term steady state to be of importance for welfare assessment of policies and find that convergence may be slow depending on both the model and the policy considered.

  • 96.
    Sundberg, Marcus
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics, Transport and Location Analysis.
    The Development of STRAGO - With application to a kilometer tax.Manuscript (preprint) (Other academic)
  • 97.
    Sundberg, Marcus
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    The development of STRAGO - with application to a kilometer tax2009Report (Other academic)
  • 98.
    Sundbergh, Pia
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Algers, Staffan
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Creating quiet city zones by noise charges and quiet vehicles. Part one: Traffic flow calculations2007In: Turkish Acoustical Society - 36th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2007 ISTANBUL, 2007, p. 1970-1978Conference paper (Refereed)
    Abstract [en]

    One important subject in the EU directive 2002/49/EC regarding noise maps and action plans is to establish or preserve quiet areas. In a study within the EU FP6 project "Quiet City Transport" we have analyzed the possibility of creating Quiet City Zones. The concept is to utilize quiet vehicles and apply restrictions on noisy vehicles by means of of closed gates or noise charges to reduce traffic flows and noise source emission in a zone. Traffic models were used to forecast the effects on traffic flow, using a prediction system modeling the travel demand and transport system of the entire Stockholm County. Traffic flow data from each simulation were used as input to create related noise maps of a selected study area. Applied methods and results are presented in two consecutive papers. In this paper, part one, we present traffic flow calculations. In addition, using a car type choice model we analyze what impact noise charges have on the share of low noise vehicles in the car stock. In part two, noise calculations and noise effects are presented.

  • 99. Swärdh, Jan-Erik
    et al.
    Algers, Staffan
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301).
    Willingness to accept commuting time for yourself and for your spouse: Empirical evidence from Swedish stated preference data2009Report (Other academic)
    Abstract [en]

    In this study, Swedish stated preference data is used to derive estimated values of commutingtime (VOCT). Both spouses in two-earner households are individually makingtrade-offs between commuting time and wage; both with regard to their own commutingtime and wage only, as well as when both their own commuting time and wageand their spouse’s commuting time and wage are simultaneously changed. Thus, we areable to compare how male spouses and female spouses value each other’s commutingtime. When only ones own commuting time and wage are attributes, the empiricalresults show that the estimated VOCT is plausible with a tendency towards high valuescompared to other studies, and that VOCT does not differ significantly betweenmen and women. When decisions affecting commuting time and wage of both spousesare analyzed, both spouses tend to value the commuting time of the wife highest. Forpolicy implications, this study provides additional support for the practice of valuingcommuting time higher than other private travel time. In addition, if VOCT were tobe gender specific, the value might be higher for women than for men in two-earnerhouseholds.

  • 100.
    Tikoudis, Ioannis
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    Karlström, Anders
    KTH, School of Architecture and the Built Environment (ABE), Transport and Economics (closed 20110301), Transport and Location Analysis (closed 20110301). KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
    A sequential search approach to the dynamic determination of spatial reservation wages2010Report (Other academic)
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