Vetenskapliga artiklar

Vetenskapliga artiklar

Vetenskapliga artiklar

The impact of regional commuter trains on property values: Price segments and income

Bohman, H., Nilsson, D. (2016). Journal of Transport Geography 56, 102-109

Using single-family home transactions and commuter rail data from 2014, we estimate hedonic price models using two-stage spatial quantile regression to capture variations across price segments. The results are significant and robust across different model specifications and across the different price segments, but the price effect of proximity to a commuter train station is strongest in lower price segments of the housing market. These price segment effects are also valid for proximity to highways, as well as for several other property attributes. Results also reveal that the largest of the three regional labour markets in our study has a greater effect on prices. Furthermore, the study introduces property-specific neighbourhood data from raster data, showing that population density has a negative impact on property prices at the neighbourhood level while population size has a positive impact at the municipal level.

Vetenskapliga artiklar

Towards an Agent-Based Model of Passenger Transportation

Banafsheh Hajinasab , Paul Davidsson, Jan A. Persson, Johan Holmgren, Volume 9568 of the series Lecture Notes in Computer Science pp 132-145, 15 March 2016

An agent-based simulation model for supporting the decision making in urban transport planning is presented. The model can be used to investigate how different transport infrastructure investments and policy instruments will affect the travel choices of passengers. We identified four main categories of factors influencing the choice of travel: cost, time, convenience, and social norm. However, travelers value these factors differently depending on their individual characteristics, such as age, income, work flexibility and environmental engagement, as well as on external factors, such as the weather. Moreover, instead of modeling the transport system explicitly, online web services are used to generate travel options. The model can support transport planners by providing estimations of modal share, as well as economical and environmental consequences. As a first step towards validation of the model, we have conducted a simple case study of three scenarios where we analyze the effects of changes to the public transport fares on commuters’ travel choices in the Malmö-Lund region in Sweden.

Vetenskapliga artiklar

The Qualities Needed for a Successful Collaboration: A Contribution to the Conceptual Understanding of Collaboration for Efficient Public Transport

Hrelja, Pettersson, Westerdahl, Sustainability 2016, 8, 542.

The creation of an efficient public transport system requires collaborations between formal independent organizations. This paper examines collaborations between public and private organizations and passengers, with the aim of contributing to the conceptual understanding of collaborations on public transport. The study begins by describing previous research on collaboration in the public transport area and in other research fields analytically relevant for public transport. Accordingly, collaboration is defined as an attempt to overcome problems with collective action and to transform a situation in which the various organizations operate independently into a situation where they act in concert to achieve shared objectives. The collaboration process involves the establishment of joint rules and structures that govern the relationship and behavior of the organizations. According to this definition, collaboration is a more sophisticated form of collective action than is indicated by terms such as “co-operation” or “coordination”. Fully-functioning collaboration can be described as a form of “co-action”, as opposed to “individual action”. In co-action, formal independent organizations together reap the benefits of working together and achieve more than if they had acted alone. Co-action can be regarded as a gradual trust-building process that requires qualities such as mutual confidence, an understanding of other organizations’ motivations, and joint problem formulation.

Vetenskapliga artiklar

Soft space regional planning as an approach for integrated transport and land use planning in Sweden – challenges and ways forward

Fredrik Pettersson, Hanna Frisk. Urban, Planning and Transport Research: An Open Access Journal Volume 4, Issue 1, 2016.

The paper analyses how soft space planning as spatial strategy making at regional level is influencing local-level planning. The analysis covers 10 municipalities in the Swedish Region of Skåne. The results illustrate that the dialogue-based process has established a broad consensus on the need to consider the regional scale in municipal planning. However, the results also show that the impact on planning is limited since the consensus-based process resulted in strategic objectives with limited influence on prevailing planning practices. Findings also illustrate that key concepts for operationalising the strategies – including densification and public transport accessibility – were defined and used differently in different municipalities. Consequently, a more stringent use, and stricter definitions, of core concepts could be a way to strengthen the capacity of soft space regional planning.

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“I want complete freedom”: car use and everyday mobility among the newly retired

Berg, J., Levin, L., Abramsson, M. & Hagberg, J-E. (2015). European Transport Research Review, 7(4): 1-10.

In contrast to much research on older people’s mobility that has studied slightly older people, this study have focused on a specific group that are relatively healthy, well-off, and have the possibility to choose between different modes of transport. By combining travel diaries and qualitative interviews, we have explored how newly retired people reason as regard their travel behaviour but also how they actually travel. Although the car was used more than other transport modes, being able to walk and cycle now that they had more time as retirees was highly valued. Our results indicate that urban residents that are retiring now and in the future are a key target group in transport planning when it comes to reduce car use in favour of slow modes of transport.

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Exploring public transport as an element of older persons' mobility: A Capability Approach perspective

Jean Ryan, Anders Wretstrand, Steven M. Schmidt, Journal of Transport Geography, nr 48, oktober 2015, s. 105–114

This study employs Amartya Sen's Capability Approach as a guiding conceptual framework in the exploration of public transport as an element of mobility among the young-old living in Stockholm, Sweden. The aim is to shed light on the variation in mobility resources of those who perceive they can use public transport as their primary mode of transport and of those who perceive they cannot (‘mobility capability element’), as well as that of those using public transport and of those not using it (‘mobility functioning element’). Increasing residential density, being female and having a higher functional capacity were among the mobility resources which produced a positive increase in the likelihood of considering it possible to use, and the use of, public transport. The higher the ratio of cars to household member, the lower the likelihood of including public transport as a mobility capability element or as a mobility functioning element. Most of those who included public transport use as both a mobility capability element and a mobility functioning element were also users of the private car. There was also a tendency towards car use rather than towards no travel if the individual was not a user of public transport. Through the application of the Capability Approach, this paper facilitates further insight into the variation in mobility resources, corresponding mobility capability and mobility functioning elements of this group, with respect to public transport. It also opens up questions for the future employment of this conceptual framework within transport research.

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Viewpoints of adults with and without Autism Spectrum Disorders on public transport

Marita Falkmer, Tania Barnett, Chiara Horlin, Olov Falkmer, Jessica Siljehav, Sofi Fristedt, Hoe C. Lee, Derserri Y. Chee, Anders Wretstrand, Torbjörn Falkmer, Transportation Research Part A: Policy and Practice, nr 80, oktober 2015, s. 163–183

Public transport is low cost, allows for independence, and facilitates engagement and participation for non-drivers. However, the viewpoints of individuals with cognitive disabilities are rarely considered. In Australia, the prevalence of Autism Spectrum Disorders (ASD) is approximately 1% and increasing. Many individuals with ASD do not possess a driver’s licence, indicating that access to public transport is crucial for their independence. However, at present, there is no research on the opinions of adults with ASD on public transport. Q method was used to identify the viewpoints of both participant groups on public transport. Participants consisted of 55 adults with a diagnosis of ASD and a contrast group of 57 neurotypical adults. Both groups completed a Q sort task which took place in either Perth or Melbourne, Australia. Q method was used to identify the viewpoints of both participant groups on public transport. Participants consisted of 55 adults with a diagnosis of ASD and a contrast group of 57 neurotypical adults. Both groups completed a Q sort task which took place in either Perth or Melbourne, Australia. The most prominent viewpoint indicated that both groups preferred to use public transport over driving and believed that it supported their independence. This viewpoint also indicated that both groups preferred to use electronic ticketing when using public transport. Interestingly, the second most prominent viewpoint indicated that both groups preferred to drive themselves by private car rather than use public transport.