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  • 1.
    Vautard, Félix
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Transportplanering.
    Improvement of departure time suitability for interregional rail timetables2020Licentiatavhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    In order to respond to growing interregional rail traffic, rail capacity should be allocated better. To achieve this, one possibility is to optimise suitability of departure times for rail passengers in the timetabling process. The suitability of departure and arrival times refers to how well the timetable can diminish constraints on passengers that must adapt their activities to train schedules. However, current knowledge on this issue is limited. Indeed, only few studies have quantified how passengers valuate departure time suitability. These studies are also quite brief in their coverage of the influence of travellers’ profiles on these valuations. In addition, current methods comparing the socioeconomic consequences of different timetables are not applicable in all contexts, and most of them rely on strong simplifications. In summary, this thesis aims to answer the following research questions:

    1. What are the determinants for passenger valuations of departure time suitability?
    2. How to improve the welfare assessment of departure time shifts in interregional timetables?

    In paper 1, I focus on the first research question. To this end, we present a new study in which we estimate new valuations of departure time suitability. To achieve this, we conducted a stated-preference survey on several Swedish rail lines. We present the design of the survey and its result in the paper. With this work, I aim to fulfil two objectives: first, to provide figures to improve inputs for travel demand forecast models and socioeconomic assessments. Second, to determine the influence of trip characteristics and traveller’s socioeconomic profile on their valuations.

    In paper 2, I focus on the second research question. To this end, we present a method that enables calculating changes in welfare due to departure time shifts in any interregional timetable. In this method, we bridge schedule-based model forecasts with cost-benefit analysis framework. This enables a better approximation of consumer and producer surplus than in previous literature. In addition, we show the applicability and potential of our method on a case study covering a Swedish interregional line.

    Fulltekst (pdf)
    fulltext
  • 2.
    Vautard, Félix
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Transportplanering. KTH, Skolan för teknikvetenskap (SCI), Centra, Järnvägsgruppen, JVG.
    Liu, Chengxi
    VTI, the Swedish National Road and Transport Research Institute.
    Fröidh, Oskar
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Transportplanering. KTH, Skolan för teknikvetenskap (SCI), Centra, Järnvägsgruppen, JVG.
    Improving interregional rail timetabling through welfare assessment of departure time shifts2021Inngår i: Journal of Rail Transport Planning & Management, ISSN 2210-9706, E-ISSN 2210-9714, Vol. 17, nr 100223Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In order to improve current rail timetabling processes, the suitability of train departure times for passengers should be included in timetable assessment. To achieve this, one possibility is to calculate the change in consumer and producer surplus (i.e., the economic welfare) resulting from departure time shifts in rail timetables. However, existing methods for this calculation are quite limited. To fill this gap, we propose a new method in the current paper. This method enables comparing most scenarios involved in interregional rail timetabling in terms of economic welfare. To this end, our method takes advantage of schedule-based models that allow assessing the impact of departure time shifts on the demand and valuation of each possible route using the timetable. As a proof of concept, we illustrate this method on a case study on the busiest Swedish interregional line. This case study shows the potential of the method to deliver detailed calculations with analysis of equity effects. To conclude, the method presented in this paper improves on the current literature, and it can be used to improve timetable optimisation algorithms or to better resolve conflicts between train path requests.

    Fulltekst (pdf)
    fulltext
  • 3.
    Vautard, Félix
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Transportplanering.
    Liu, Chengxi
    VTI, Swedish Natl Rd & Transport Res Inst, Malvinas Vag 6, S-11428 Stockholm, Sweden..
    Fröidh, Oskar
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Transportplanering.
    Byström, Camilla
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Transportplanering.
    Estimation of interregional rail passengers ?: valuations for their desired departure times2021Inngår i: Transport Policy, ISSN 0967-070X, E-ISSN 1879-310X, Vol. 103, s. 183-196Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Valuations for various attributes of the transport supply are key parameters in travel demand forecast models and cost-benefit analyses. In the case of interregional rail travel, such attributes are mostly travel time, departure/ arrival time, and comfort/service levels. Although the valuations for travel time savings and comfort levels are well documented, literature concerning how much passengers are willing to pay to obtain the departure/arrival time that best suits their needs remains scarce. We present in this paper a new study that estimates passenger valuations for reduction of departure time displacement (also called schedule delay) through common adaptation of the scheduling model. Our goal is twofold: first, better understand how travel scheduling is influenced by socioeconomic backgrounds and trip characteristics; second, provide detailed figures that can be used to improve travel demand forecasts and cost-benefit analyses. To achieve this, we conducted a stated preference survey on several Swedish rail routes and determined the valuations for departure time scheduling as willingness to pay and time multipliers. The figures obtained show that departure time flexibility greatly depends on trip characteristics and travellers? socio-economic background. In addition, the comparison of our figures with previous literature highlights the need to establish a standardised method to measure and use these valuations. Finally, we succeeded in providing valuations that can be used with care as approximations in demand modelling and cost benefit analyses in the context of interregional rail travel.

  • 4.
    Vautard, Félix
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Transportplanering.
    Liu, Chengxi
    Fröidh, Oskar
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Transportplanering.
    Byström, Camilla
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Samhällsplanering och miljö, Systemanalys och ekonomi.
    Estimation of interregional rail passengers’ valuations for their desired departure times2020Inngår i: Transport Policy, ISSN 0967-070X, E-ISSN 1879-310XArtikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Valuations for various attributes of the transport supply are key parameters in travel demand forecast models and cost-benefit analyses. In the case of interregional rail travel, such attributes are mostly travel time, departure/arrival time, and comfort/service levels. Although the valuations for travel time savings and comfort levels are well documented, literature concerning how much passengers are willing to pay to obtain the departure/arrival time that best suits their needs remains scarce. We present in this paper a new study that estimates passenger valuations for reduction of departure time displacement (also called schedule delay) through common adaptation of the scheduling model. Our goal is twofold: first, better understand how travel scheduling is influenced by socioeconomic backgrounds and trip characteristics; second, provide detailed figures that can be used to improve travel demand forecasts and cost-benefit analyses. To achieve this, we conducted a stated preference survey on several Swedish rail routes and determined the valuations for departure time scheduling as willingness to pay and time multipliers. The figures obtained show that departure time flexibility greatly depends on trip characteristics and travellers’ socio-economic background. In addition, the comparison of our figures with previous literature highlights the need to establish a standardised method to measure and use these valuations. Finally, we succeeded in providing valuations that can be used with care as approximations in demand modelling and cost-benefit analyses in the context of interregional rail travel.

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