| 1. |
- Alhassan, I. B., et al.
(författare)
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The Movingo integrated ticket : seamless connections across the mälardalen region of Sweden
- 2020
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Ingår i: Transportation planning and technology (Print). - : Taylor & Francis. - 0308-1060 .- 1029-0354. ; 43:4, s. 404-423
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Tidskriftsartikel (refereegranskat)abstract
- The need for improved public transport (PT) ticketing in ever-growing deregulated PT markets has made well-designed integrated ticketing systems a priority area of intervention for PT service providers around the world. Yet, very little practical evidence of its impacts are reported in Sweden and in the world at large. The focus of this study was the impacts of the Movingo integrated ticketing scheme in terms of PT patronage, user satisfaction and the perceived quality of the ticketing set-up. Three travel surveys were conducted along the Stockholm-Uppsala route. Methods including logistic regression and correlated t-tests were used to analyse the samples. The findings suggest that the scheme made rail commuting more attractive resulting in an overall increase of about 24% in ticket sales with 3%–15% car commuters reporting that they patronised PT services after the project. The scheme also resulted in increased rail commuter satisfaction. The overall perceived quality of the ticketing set-up did not however improve due to interoperability challenges. Service providers’ uncertainty about equitable distribution of revenue among the participating service providers, interoperability challenges and the lack of interest among most of the participating service providers to sell Movingo tickets are some issues to be addressed.
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| 2. |
- Almlöf, Erik, 1985-, et al.
(författare)
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Frameworks for assessing societal impacts of automated driving technology
- 2022
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Ingår i: Transportation planning and technology (Print). - : Taylor & Francis. - 0308-1060 .- 1029-0354. ; 45:7, s. 545-572
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Tidskriftsartikel (refereegranskat)abstract
- Numerous studies have studied the impacts of automated driving (AD) technology on e.g. accident rates or CO2 emissions using various frameworks. In this paper we present an overview of previous frameworks used for societal impacts and review their advantages and limitations. Additionally, we introduce the Total Impact Assessment (TIA) framework developed by the Swedish Transport Administration and use this framework to evaluate three scenarios for AD bus services in Stockholm. We conclude that the reviewed frameworks cover different aspects of AD technology, and that e.g. cybersecurity and biodiversity are areas largely neglected. Furthermore, most frameworks assume effects to be homogenous, when there may be large variation in e.g. perceived security. The TIA framework does not manage to include all societal aspects of AD technology, but has great benefits and manages to provide important insights of the societal impacts of AD technology, especially how effects may wary for different actors.
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| 3. |
- Andersson Granberg, Tobias, et al.
(författare)
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The flight perturbation problem
- 2004
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Ingår i: Transportation planning and technology (Print). - : Informa UK Limited. - 0308-1060 .- 1029-0354. ; 27:2, s. 91-117
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Tidskriftsartikel (refereegranskat)abstract
- Airlines spend considerable time, effort and financial resources on planning. It is essential to create a competitive timetable and construct a fleet and a crew schedule that utilizes these resources to the maximum. Unfortunately, it is all too common that an airline is faced with the necessity of reconstructing their schedules due to some unforeseen event, for example an aircraft breakdown or a crew member that is indisposed. In this paper, an application that can help airlines solve the complex problem of reconstructing aircraft schedules is presented. A mixed integer multicommodity flow model with side constraints is developed and further reformulated into a set packing model using the Dantzig—Wolfe decomposition. Cancellations, delays and aircraft swaps are used to resolve the perturbation, and the model ensures that the schedule returns to normal within a certain time. Two column generation schemes for heuristically solving the model are tested on real problem data obtained from a Swedish domestic airline. The computational tests show that the application is capable of presenting high quality solutions in a few seconds and therefore can be used as a dynamic decision support tool by the airlines.
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| 4. |
- Andrews, Geoffrey, et al.
(författare)
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The Grey Escape : investigating older people's use of the free bus pass
- 2012
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Ingår i: Transportation planning and technology (Print). - : Informa UK Limited. - 0308-1060 .- 1029-0354. ; 35:1, s. 3-15
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Tidskriftsartikel (refereegranskat)abstract
- Since 2008 most older people in England have benefited from unlimited area-wide free travel by bus after the morning peak period. The official policy rhetoric supporting implementation of the measure drew significantly on the need to reduce social exclusion amongst older people. However, despite a substantial increase in the number of concessionary journeys in England and the associated cost liabilities for local authorities and possibly also operators, there is currently only limited understanding of the wide ranging effects on bus use of providing a free pass, and in particular to whom benefits from the policy accrue. In part, this circumstance results from a methodological focus by evaluation studies hitherto that has emphasised aggregate-level data, often at the expense of the very rich contextual information about how the individual benefits from using a pass. This article presents insights into the perceptions, motivations and decisions relating to use of free bus passes, highlighting the existence of both tangible and intangible benefits which arise. It offers a fresh insight into previously undefined uses and benefits derived from possessing and using a concessionary bus pass. This article concludes by noting possible policy implications of the research in the context of the UK's ageing population and for other international contexts where the transport intervention of free bus travel is being considered.
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| 5. |
- Antoniou, Constantinos, et al.
(författare)
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Evaluation of diversion strategies using dynamic traffic assignment
- 2011
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Ingår i: Transportation planning and technology (Print). - : Informa UK Limited. - 0308-1060 .- 1029-0354. ; 34:3, s. 199-216
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Tidskriftsartikel (refereegranskat)abstract
- A framework for the evaluation of the effectiveness of traffic diversion strategies for non-recurrent congestion, based on predictive guidance and using dynamic traffic assignment, is presented. Predictive guidance is based on a short-term prediction of traffic conditions, incorporating user reaction to information and guidance. A case study of the Lower Westchester County network in New York State, using DynaMIT-P, is presented to illustrate the application of the framework. DynaMIT-P is capable of evaluating diversion strategies based on predicted conditions, which take into account drivers' response to traffic information. The case study simulates the operations of predictive variable message signs positioned in strategic locations. DynaMIT-P is calibrated for the study network and used to establish base conditions for two incident scenarios in the absence of advanced traveller information systems. The effectiveness of predictive diversion strategies is evaluated (using rigorous statistical tests) by comparing traffic conditions with and without diversion strategies. The empirical findings suggest that incident diversion strategies based on predictive guidance result in travel time savings and increased travel time reliability.
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| 6. |
- Behrends, Sönke, 1976, et al.
(författare)
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The impact of urban freight transport: a definition of sustainability from an actors perspective
- 2008
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Ingår i: Transportation Planning and Technology. - : Informa UK Limited. - 1029-0354 .- 0308-1060. ; 31:6, s. 693-713
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of this article is to firstly, present a definition of sustainable urban freight transport (SUFT) based on existing theories, and secondly to develop an indicator set that describes SUFT. The definition of SUFT makes a categorisation of actions possible which enables the actors to select effective strategies towards SUFT. The indicator set consists of two levels: 1. impact indicators which describe how urban freight transport violates the principles of sustainability; and 2. performance indicators which describe different categories determining the characteristics and performance of the urban transport system. A literature study is conducted to analyse the characteristics determining the performance of the actors in the urban freight transport chain. Knowing the current state and improvement potentials of the urban freight transport system are prerequisites for defining successful strategies and implementing effective actions.
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| 7. |
- Bärthel, Fredrik, 1976, et al.
(författare)
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Developing intermodal transport for small flows over short distances
- 2004
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Ingår i: Transportation Planning and Technology. - : Informa UK Limited. - 1029-0354 .- 0308-1060. ; 27:5, s. 403-424
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Tidskriftsartikel (refereegranskat)abstract
- Intermodal road-rail freight transport works best within markets with relatively large flows occurring over long distances, which corresponds poorly to the current demand for transport in the European Union. The purpose of this paper is to compare the capabilities of conventional European intermodal transport, with special reference to the competitiveness in markets with small flows over short distances, and to explore innovative concepts. Using a technological systems approach, key functions are identified as being the inducement and blocking mechanisms that affect the development and diffusion path of this 'small flows over short distances' (SFSD) system, providing a tool for empirical delineation of the system. These concepts are illustrated and analysed through a case study of the Swedish development project Light-combi. The results show that market and financial uncertainties, insufficient network connectivity and policies favouring the existing technology paradigm, severely hamper the development and diffusion of SFSD systems. © 2004 Taylor & Francis Ltd.
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| 8. |
- Camporeale, Rosalia, et al.
(författare)
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Study of the accessibility inequalities of cordon-based pricing strategies using a multimodal Theil index
- 2019
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Ingår i: Transportation Planning and Technology. - : Informa UK Limited. - 0308-1060 .- 1029-0354.
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Tidskriftsartikel (refereegranskat)abstract
- The implementation of an appropriate pricing policy in an urbanarea could alleviate both environmental and congestion problemsby encouraging a shift towards more sustainable modes oftransportation. However, any positive net social welfare balancedelivered by the policy can hide unacceptable regressive effects.Therefore, it is crucial to investigate any change in relative levelsof accessibility among different categories of transport networkusers.This study focuses on the application of a cordon-basedcongestion pricing scheme on a multimodal network, whereprivate cars and public transportation coexist, and includes asensitivity analysis by varying the size of the charging area andthe amount of the toll, for a monocentric urban reality. Takinginto account an elastic demand associated with each proposedcharging scenario, the related distributional effects are exploredusing the Theil index, with a quantitative assessment of theinequalities in the accessibility variations across the users of thenetwork.
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| 9. |
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| 10. |
- Ekström, Joakim, et al.
(författare)
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Optimal Toll Locations and Levels in Congestion Pricing Schemes : a Case Study of Stockholm
- 2014
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Ingår i: Transportation planning and technology (Print). - : Routledge. - 0308-1060 .- 1029-0354. ; 37:4, s. 333-353
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Tidskriftsartikel (refereegranskat)abstract
- As congestion pricing has moved from theoretical ideas in the literature to real world implementations, the need for decision support when designing the pricing schemes has become evident. This paper deals with the problem of finding optimal toll levels and locations in a road traffic network, and presents a case study of Stockholm. The optimization problem of finding optimal toll levels, given a predetermined cordon, and the problem of finding both optimal toll locations and levels are presented, and previously developed heuristics are used for solving these problems. For the Stockholm case study, the possible welfare gains of optimizing the toll levels in the current cordon, and optimizing both the toll locations and their corresponding toll levels are evaluated. It is shownthat by tuning the toll levels in the current congestion pricing cordon used in Stockholm, the welfare gain can be significantly increased, and furthermore improved by allowing a toll on the bypass highway “Essingeleden”. It is also shown that by optimizing both the toll locations and levels, a congestion pricing scheme with welfare gain close to what can be achieved by marginal social cost pricing, can be designed with tolls being located on only a forth of the tollable links.
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| 11. |
- Ekström, Joakim, et al.
(författare)
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Optimal toll locations and toll levels in congestion pricing schemes : a case study of Stockholm
- 2014
-
Ingår i: Transportation planning and technology (Print). - : Informa UK Limited. - 0308-1060 .- 1029-0354. ; 37:4, s. 333-353
-
Tidskriftsartikel (refereegranskat)abstract
- As congestion pricing has moved from theoretical ideas in the literature to real-world implementation, the need for decision support when designing pricing schemes has become evident. This paper deals with the problem of finding optimal toll levels and locations in a road traffic network and presents a case study of Stockholm. The optimisation problem of finding optimal toll levels, given a predetermined cordon, and the problem of finding both optimal toll locations and levels are presented, and previously developed heuristics are used for solving these problems. For the Stockholm case study, the possible welfare gains of optimising toll levels in the current cordon and optimising both toll locations and their corresponding toll levels are evaluated. It is shown that by tuning the toll levels in the current congestion pricing cordon used in Stockholm, the welfare gain can be increased significantly, and furthermore improved by allowing a toll on a major bypass highway. It is also shown that, by optimising both toll locations and levels, a congestion pricing scheme with welfare gain close to what can be achieved by marginal social cost pricing can be designed with tolls being located on only a quarter of the tollable links.
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| 12. |
- Engelson, Leonid, 1955-, et al.
(författare)
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The role of volume-delay functions in forecasting and evaluating congestion charging schemes: the Stockholm case
- 2015
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Ingår i: Transportation planning and technology (Print). - : Routledge. - 0308-1060 .- 1029-0354. ; 38:6, s. 684-707
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Tidskriftsartikel (refereegranskat)abstract
- AbstractThis paper uses observations from before and during the Stockkholm congestion charging trial in order to validate and improve a transportation model for Stockholm. The model overestimates the impact of the charges on traffic volumes while at the same time it substantially underestimates the impact on travel times. These forecast errors lead to considerable underestimation of economic benefits which are dominated by travel time savings. The source of error lies in the static assignment that is used in the model. Making the volume-delay functions (VDFs) steeper only marginally improves the quality of forecast but strongly impacts the result of benefit calculations. We therefore conclude that the dynamic assignment is crucial for an informed decision on introducing measures aimed at relieving congestion. However, in the absence of such a calibrated dynamic model for a city, we recommend that at least a sensitivity analysis with respect to the slope of VDFs is performed.
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| 13. |
- Erlandson, William, et al.
(författare)
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Meta-Heuristic for inserting a robust train path in a non-cyclic timetable
- 2023
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Ingår i: Transportation planning and technology (Print). - : TAYLOR & FRANCIS LTD. - 0308-1060 .- 1029-0354. ; 46:7, s. 842-863
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Tidskriftsartikel (refereegranskat)abstract
- Many freight trains depart Swedish marshalling yards before or after their planned departure times. Today, a deviating departure time is allowed if no conflicting train path can be found a few stations ahead. This increases the risk that the train might be delayed to its destination and cause delays to other trains. We present a meta-heuristic that modifies a timetable by adding a train path (for our freight train) and, if necessary, adjusting surrounding train paths. The aim of the insertion of the additional train path and the adjustments of the existing ones is to obtain a large bottleneck robustness, that is, the largest possible minimal temporal distance to any other train in the timetable. We provide experimental results for a Swedish railway stretch with a non-cyclic timetable and heterogeneous traffic. We show that we quickly add a train path, while improving the robustness of the timetable.
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| 14. |
- Hussaini, Mohammed, et al.
(författare)
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Exploring low carbon transition pathways for the UK road transport sector
- 2017
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Ingår i: Transportation Planning and Technology. - : Informa UK Limited. - 0308-1060 .- 1029-0354. ; 40:7, s. 796-811
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Tidskriftsartikel (refereegranskat)abstract
- This paper uses an analytical framework of multi-level and multi-phase perspectives to explore low carbon transition pathways for the UK road transport system. The work draws on the impact made by the national (UK) and regional (EU) low carbon policy instruments on the UK road sector. The results show that the transformation pathway, which is at the take-off phase on a large scale, is the only fully active pathway. The transformation is mainly characterized by the adoption of biofuel blends and hybrid electric vehicles, as well as niche technologies. For the emergence of an ideal low carbon road system in the UK, it is shown that the transformation pathway is insufficient and the likely pathway sequence to full decarbonization will be transformation-substitution-de-alignment/re-alignment. However, the dynamics that can favour a smooth process of this sequence will demand a range of active niche technologies and strong government intervention.
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| 15. |
- Häll, Carl Henrik, 1978-, et al.
(författare)
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Improving paratransit scheduling using ruin and recreate methods
- 2013
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Ingår i: Transportation planning and technology (Print). - : Taylor & Francis. - 0308-1060 .- 1029-0354. ; 36:4, s. 377-393
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Tidskriftsartikel (refereegranskat)abstract
- In this paper we study the effects of using ruin and recreate methods in a replanning phase of a dynamic dial-a-ride problem. Several such methods are proposed, and a modeling system is used to evaluate how they improve the quality of the solutions. We show that simple changes to existing planning methods can increase the efficiency of the service. Two cases, with different forms of costs inflicted on the vehicles, are evaluated and significant improvements are found in both cases. The best results of our study are found with ruin methods based on removal of sequences of requests.
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| 16. |
- Jevinger, Åse, et al.
(författare)
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Stated opinions and potential travel with DRT – a survey covering three different age groups
- 2024
-
Ingår i: Transportation planning and technology (Print). - : Taylor & Francis. - 0308-1060 .- 1029-0354. ; , s. 1-28
-
Tidskriftsartikel (refereegranskat)abstract
- Previous research shows that well-grounded knowledge of the intended travellers is essential for achieving successful DRT services. However, there is a lack of understanding of the potential travels in different age groups, and the acceptance of design alternatives that may affect these. Based on surveys conducted in Sweden, this paper investigates these factors in a hypothetical DRT service, in the age groups 6–17, 18–69 and over 70 years. A total of 1241 people answered the questionnaires. The results show that the age groups have similar acceptance regarding delays and departure time intervals. Older adults have lower acceptance of digital solutions, and children and older adults have stronger requirements for value-added services. About 85–90% of the respondents claim they would use the service, at least occasionally. The results also show how a DRT system should be configured to allow room for system efficiency gains, while still being accepted by most travellers.
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| 17. |
- Kristoffersson, Ida, 1980-, et al.
(författare)
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Estimation of a large-scale tour generation model taking travellers’ daily tour patterns into account
- 2020
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Ingår i: Transportation planning and technology (Print). - : Routledge. - 0308-1060 .- 1029-0354. ; 43:2, s. 158-173
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Tidskriftsartikel (refereegranskat)abstract
- Tour generation is conventionally modelled separately according to tour purpose. Tours with different purposes are, however, in reality not generated independently of each other. For example, few travellers conduct more than three tours per day. In this paper, the conventional tour generation model is extended into estimation of a model that takes travellers’ daily tour patterns into account. Results show that access to a car and a drivers’ licence, having a job and presence of children in the household increase the probability of making many tours in one day. Furthermore, results show that accessibility is an important factor for the generation of non-mandatory tours, that weekends and holiday seasons are important determinants of when tour purposes are generated, that high income increases the probability of conducting business tours as well as tour patterns that include expensive activities, and that high income reduces the probability of conducting inexpensive activities such as visiting friends and family. © 2020, © 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
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| 18. |
- Lindfeldt, Olov
(författare)
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An analysis of double-track railway line capacity
- 2011
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Ingår i: Transportation planning and technology (Print). - : Informa UK Limited. - 0308-1060 .- 1029-0354. ; 34:4, s. 301-322
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Tidskriftsartikel (refereegranskat)abstract
- In Sweden, rail traffic is almost never separated according to speed. On several double-track lines the mix of heavy freight, regional and high speed trains imposes severe capacity problems. In order to evaluate the capacity for different traffic mixes, a combinatorial model - Timetable Variant Evaluation Model (TVEM) - has been developed. In this model both infrastructure and timetable are modelled as variables. Traffic is divided into train patterns according to a presumed regular timetable and then scheduled systematically in different time locations. The timetable variants are evaluated with regard to: mean values of capacity that give the number of trains/hr for the required mix, variance measures that show how the capacity depends on the timetable and scheduled delays that show the extension of run times imposed by overtaking. The paper shows how the important distance between adjacent overtaking stations can be sampled from Weibull distributions. TVEM has been used to evaluate three different operational cases with mixed traffic. The analysis shows that the impact on capacity from the infrastructure increases with speed difference and frequency of operation for passenger trains, while the importance of the infrastructure decreases when traffic is more heterogeneous. The impact from the timetable is strongest when the speed differences are low and/or the frequency of passenger trains is low. Capacity loss due to increased speed differences can be compensated for by additional overtaking stations. The slower trains suffer from a considerable increase in scheduled delays when speed differences increase.
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| 19. |
- Lindfeldt, Olov, 1976-
(författare)
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Analysis of capacity on double-track railway lines
- 2010
-
Ingår i: Transportation planning and technology (Print). - 0308-1060 .- 1029-0354.
-
Tidskriftsartikel (refereegranskat)abstract
- In Sweden rail traffic is almost never separated according to speed. On several double-track lines the mix of heavy freight, regional and high speed trains imposes severe capacity problems. In order to evaluate the capacity for different traffic mixes a combinatorial model, TVEM (Timetable Variant Evaluation Model), has been developed. In this model both the infrastructure and the timetable are modelled as variables. The traffic is divided into train patterns according to a presumed regular timetable and then systematically scheduled in different time locations. The timetable variants are evaluated with regard to: mean values of capacity that give the number of trains/h for the required mix, variance measures that show how the capacity depends on the timetable and scheduled delays that show the extension of run times imposed by overtakings. The paper shows how the important distance between adjacent overtaking stations can be sampled from Weibull distributions. TVEM has been used to evaluate three different operational cases with mixed traffic. The analysis shows that the impact on capacity from the infrastructure increases with speed difference and frequency of operation for the passenger trains, while the importance of the infrastructure decreases when traffic is more homogeneous. The impact from the timetable is strongest when the speed differences are low and/or the frequency of passenger trains is low. Capacity loss due to increased speed differences can be compensated for with additional overtaking stations. The slower trains suffer from a considerable increase in scheduled delays when speed differences increase.
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| 20. |
- Lu, Meng, et al.
(författare)
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Technical feasibility of advanced driver assistance systems (ADAS) for road traffic safety.
- 2005
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Ingår i: Transportation Planning and Technology. - : Informa UK Limited. - 0308-1060 .- 1029-0354. ; 28:3, s. 167-187
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Tidskriftsartikel (refereegranskat)abstract
- This paper explores the technical feasibility of five Advanced Driver Assistance System (ADAS) functions to contribute to road traffic safety, to reach stated European (EU) and national road traffic safety targets. These functions - enhanced navigation, speed assistance, collision avoidance, intersection support and lane keeping - were selected from previous research as adequate substitutes for infrastructure related measures. State-of-the-art enabling technologies (like positioning, radar, laser, vision and communication) and their potential are analysed from a technical perspective, and possible obstacles for large-scale dedicated ADAS implementation for road traffic safety are discussed.
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| 21. |
- Musselwhite, Charles, et al.
(författare)
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Legitimising risk taking : articulating dangerous behaviour on the road
- 2014
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Ingår i: Transportation planning and technology (Print). - : Informa UK Limited. - 0308-1060 .- 1029-0354. ; 37:1, s. 62-82
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Tidskriftsartikel (refereegranskat)abstract
- Using a deliberative approach 228 members of the public from four locations in the United Kingdom took part in six focus groups that met on three occasions. Applying a model based on two interlocking sets of theories (Ajzen's Theory of Planned Behaviour and Bronfenbrenner's Ecological Systems Theory) in the analysis of participants' responses, the paper explores the social and environmental systems that an individual interacts with in the articulation of risky behaviours on the road. Participants discussed how taking risks changed over their lifecourse and how they became safer with age. Social norms and perceived behavioural control influence road user safety behaviour through the exchanging of attitudes, and younger drivers especially are more likely to embrace the symbolic role of the car. The paper concludes that the nature of identity and culture within risk taking is important when designing interventions on the ground.
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| 22. |
- Nordström, Maria, et al.
(författare)
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The complexity of value of travel time for self-driving vehicles – a morphological analysis
- 2021
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Ingår i: Transportation planning and technology (Print). - : Informa UK Limited. - 0308-1060 .- 1029-0354. ; 44:4, s. 400-417
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Tidskriftsartikel (refereegranskat)abstract
- Understanding the value of travel time for mobility concepts based on self-driving vehicles is crucial to accurately value transport investments and predict future travel patterns. In this paper, we carry out a morphological analysis to illustrate the diversity of mobility concepts based on self-driving vehicles and the complexity of determining the value of travel time for such concepts. We consider four categories of parameters that directly or indirectly impact the value of travel time: (i) vehicle characteristics, (ii) operating principles, (iii) journey characteristics and (iv) traveler characteristics. The parameters and respective attributes result in a morphological matrix that spans all possible solutions. Out of these, we analyze five plausible solutions based on the implications of the concept characteristics on the total value of travel time. We conclude by suggesting an alternative approach to differentiate value of travel time based on travel characteristics rather than the usual decomposition into transport modes.
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| 23. |
- Saifuzzaman, Mohammad, et al.
(författare)
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Stockholm congestion charging : an assessment with METROPOLIS and SILVESTER
- 2016
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Ingår i: Transportation planning and technology (Print). - : Informa UK Limited. - 0308-1060 .- 1029-0354. ; 39:7, s. 653-674
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Tidskriftsartikel (refereegranskat)abstract
- This paper reviews and compares the performance of two dynamic transportation models – METROPOLIS and SILVESTER – which are used to predict the impacts of congestion charging for Stockholm. Both are mesoscopic dynamic models treating accumulation and dissipation of traffic queues, route choice, modal split and departure time choice. The models are calibrated independently for the baseline situation without charges and applied to forecast the effects of congestion charging. The results obtained from the two models are mutually compared and validated against the actual outcome of the Stockholm congestion charging scheme. Both models successfully predict the outcomes of the congestion charging trial at both aggregate and disaggregate levels. Results of welfare analysis, however, differ substantially due to differences in model specification
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| 24. |
- Susilo, Yusak, et al.
(författare)
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Behavioural decisions of travel-time ratio for work, maintenance and leisure activities in the Netherlands
- 2010
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Ingår i: Transportation planning and technology (Print). - : Informa UK Limited. - 0308-1060 .- 1029-0354. ; 33:1, s. 19-34
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Tidskriftsartikel (refereegranskat)abstract
- Using the 2005 Dutch National Travel Survey data-set this paper investigates the influences of socio-demographics, journey patterns and built environment factors on the ratio of travel time and activity duration that an individual spends when engaging in work, daily shopping, non-daily shopping and sport/recreation activities. The results show that socio-demographics and other variables have unique influence on each type of activity. The travel-time ratios (TTRs) of some activities are more varied across the population whilst some have more 'acceptable' ratios. The interaction between activity duration and travel time is also unique for each socio-demographic group. For example, given the same amount of travel time, males will spend significantly less time on shopping than females; whilst for sports and recreational activities males will spend more time on than their female counterpart. By understanding individuals' different TTR values for different activities, the TTR can be an important guide when providing activity locations which in turn can help in creating sustainable urban transport conditions.
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| 25. |
- Susilo, Yusak O., et al.
(författare)
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An exploration of shoppers travel mode choice in visiting convenience stores in the UK
- 2013
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Ingår i: Transportation planning and technology (Print). - : Informa UK Limited. - 0308-1060 .- 1029-0354. ; 36:8, s. 669-684
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Tidskriftsartikel (refereegranskat)abstract
- Using data from over 2000 convenience store customers within and outside London, this paper explores how individuals access their convenience stores and how significant the influence of their socio-demographics, shopping types and trip chaining is to their mode choice in visiting the stores. Trip chaining is found to be crucial in influencing customers' mode choice and their visit frequency. The application of logit models also shows that frequent shoppers are the ones most likely to visit the stores on foot. Interestingly, the estimation results also show that the location's density, shopping types and the day of the week are not significant in influencing travel modes. Customers who live in the most deprived areas are less likely to use a private car in visiting the stores.
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| 26. |
- Sällberg, Henrik, et al.
(författare)
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Critical risk factors of electric road uptake on motorways : a Swedish Delphi study
- 2024
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Ingår i: Transportation planning and technology (Print). - : Routledge. - 0308-1060 .- 1029-0354. ; 47:3, s. 303-322
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents the results of a ranking-type Delphi study on the critical risk factors for the adoption of an electric road system (e-road) for trucks on the main motorways in Sweden. The investment cost of such a system is high, necessitating an upfront evaluation of the adoption risk factors to reduce the likelihood of budget overruns and project delays. Participating Swedish e-road experts (N = 52) from the public sector, private sector, and academia identified 32 unique risk factors, which were divided into five categories. The three most critical risk factors, as ranked by the experts, were ‘low expansion rate,’ ‘low utilization rate,’ and ‘lengthy public-sector evaluation.’ Overall, market and financial risks were ranked as more important than institutional, technological, and sustainability risks. This study has important implications for policymakers in countries considering e-road adoption.
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| 27. |
- Tanko, Michael, et al.
(författare)
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Water transit and excess travel : discrete choice modelling of bus and ferry trips in Brisbane, Australia
- 2019
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Ingår i: Transportation planning and technology (Print). - : Routledge. - 0308-1060 .- 1029-0354. ; 42:3, s. 244-256
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Tidskriftsartikel (refereegranskat)abstract
- Recent investment in urban ferry transport has created interest in what value such systems provide in a public transport network. In some cases, ferry services are in direct competition with other land-based transport, and despite often longer travel times passengers still choose water transport. This paper seeks to identify a premium attached to urban water transit through an identification of excess travel patterns. A one-month sample of smart card transaction data for Brisbane, Australia, was used to compare bus and ferry origin–destination pairs between a selected suburban location and the central business district. Logistic regression of the data found that ferry travel tended towards longer travel times (OR = 2.282), suggesting passengers do derive positive utility from ferry journeys. The research suggests the further need to incorporate non-traditional measures other than travel time for deciding the value of water transit systems.
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| 28. |
- Tarigan, Ari K. M., et al.
(författare)
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Segmentation of paratransit users based on service quality and travel behaviour in Bandung, Indonesia
- 2014
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Ingår i: Transportation planning and technology (Print). - : Informa UK Limited. - 0308-1060 .- 1029-0354. ; 37:2, s. 200-218
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Tidskriftsartikel (refereegranskat)abstract
- Using a data-set collected among paratransit users in Bandung, Indonesia, this paper explores the impacts of paratransit users' negative experiences and dissatisfactions with their paratransit usage pattern. Segmentation and ordered probit analyses are used to examine the impacts of users' opinions on service quality on their trip-making behaviour. The results indicate that users are divided into six segments - namely, the unlucky, the young user, the experienced, the adapter, the infrequent user and the captive. The results further indicate that paratransit users, especially women, perceive negative experiences related to on-time performance (departure and arrival time) and security issues related to vehicles. Despite these dissatisfactions and negative experiences, they are still likely to use paratransit as part of their daily life. Two paratransit market segments (the adapter and the captive) are also likely to result in more trips using paratransit. The study offers several strategies and recommendations that can improve the current paratransit system so that it can better serve local needs.
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| 29. |
- Wretstrand, Anders
(författare)
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Comfort and Safety as Perceived by Wheelchair-Seated Bus Passengers
- 2007
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Ingår i: Transportation Planning and Technology. - : Informa UK Limited. - 0308-1060 .- 1029-0354. ; 30:2-3, s. 205-224
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Tidskriftsartikel (refereegranskat)abstract
- Wheelchair-seated passengers on European and Swedish urban transit buses can travel rearwards, resting against a bulkhead, without the use of tiedown equipment. However, users sometimes disapprove of being the only passengers who have to travel rearwards, and also unrestrained. In order to investigate comfort and safety as perceived by wheelchair-seated bus passengers riding either forwards or rearwards, an experimental field study was carried out. Participating subjects were 31 wheelchair users and a group of 44 ambulant passengers. Each subject made two consecutive, identical 15-minute trips, randomly beginning either forwards or backwards, and interviews were conducted after each trip. During the trips, three-axis bus motion was recorded. The concept of categorization was used as a theoretical background and basis for discussion of the comfort and safety constructs. The results indicated that while the majority preferred the forward-facing position regarding comfort issues, a minority felt that the level of perceived safety was better. Wheelchair-seated passengers were more positive towards the rearward position than the ambulant group.
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