Stefan FlügelTransportøkonomisk institutt, TØI
Stefan Flügel
PhD (transport economics)
About
47
Publications
9,818
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309
Citations
Citations since 2017
Introduction
Additional affiliations
August 2010 - February 2015
October 2008 - present
Publications
Publications (47)
Travel time is less costly if it is comfortable or can be used productively. One could hence argue that the value of travel time (VTT) of car travellers in economic appraisal should be differentiated by road type, reflecting differences in road quality. We explain the theoretical foundation for such a differentiation, review the relevant literature...
Based on four consecutive stated choice surveys, we estimate changes in public transport user’s valuation (marginal costs) of in-vehicle crowding due to the COVID-19 pandemic in two Norwegian cities. Compared to the pre-COVID level (November 2018), we find significantly higher costs during COVID (November 2021). Post-COVID costs (May 2022) are sign...
Web-based stated preference (SP) surveys are widely used to estimate values of travel time (VTT) for cost–benefit analysis, often with internet panels as the source of recruitment. The recruitment method could potentially bias the results because (1) those who frequently participate in surveys may have a lower opportunity cost of time and (2) peopl...
For several decades, stated preference (SP) studies
have been the dominant method for transport
valuation. However, there are many indications that
revealed preference data is making a strong
comeback due to access to Big Data and new
analysis possibilities such as machine learning. In
this report, we assess the capability of different RP
data sour...
We review the state of the art in estimating the value of travel time (VTT). We focus particularly on national VTT studies in which the purpose is to estimate official unit values to be used in cost–benefit analysis of transportation projects, and give an overview of the most recent studies of this kind. Such studies typically involve stated choice...
We review the state of the art in estimating the value of travel time (VTT). We focus particularly on national VTT studies in which the purpose is to estimate official unit values to be used in cost-benefit analysis of transportation projects, and give an overview of the most recent studies of this kind. Such studies typically involve stated choice...
Introduction
The valuation of travel time savings and the valuation of health effects are crucial in the economic appraisal of infrastructure projects that affect cycling and walking for transport. Current practices treat the two in separate; but if individuals perceive the positive health effects from active transport, then they should also be exp...
The report describes needs and opportunities for model
development for passenger travel in Norway. It identifies
several limitations in the current transport model system
due to the static and macroscopic model approach. The
report deals with, among other things, agent-based models,
which is a newer type of model that can contribute to
transp...
Report in Norwegian, see English summary here: https://www.toi.no/getfile.php/1353734-1598614409/Publikasjoner/T%C3%98I%20rapporter/2020/1774-2020/1774-2020_Summary.pdf
Report in Norwegian, see English summary here: https://www.toi.no/getfile.php/1353105-1591701604/Publikasjoner/T%C3%98I%20rapporter/2020/1762-2020/1762-2020-sum.pdf
Report in Norwegian, see English summary here: https://www.toi.no/getfile.php/1353006-1590390043/Publikasjoner/T%C3%98I%20rapporter/2020/1757-2020/1757-2020_Summary.pdf
Besides technological improvements, restrictive car policies are likely to be the most effective measures for reducing greenhouse gas emissions from local passenger transport. Restrictive policies may lead some individuals to choose to not travel to otherwise useful or enjoyable activities. This paper therefore explores what factors drive the proba...
Report in Norwegian; see English summary here: https://www.toi.no/getfile.php/1351239/Publikasjoner/T%C3%98I%20rapporter/2019/1727-2019/1727-2019_Summary.pdf
Knowing the speed at which a cyclist travels is important in route and mode choice modelling. Empirical evidence suggests that it varies significantly in accordance with—among other things—infrastructure and topology. Despite this, in many network-based transport models cycling speed is constant, making travel distance the predominant variable of c...
We present a model to elicit cyclists' valuation for improved road infrastructure based on mixed data sources. The stated preference (SP) data stems from a combined route-and mode choice experiments, and the revealed preference (RP) data from route choices obtained by real-world GPS-data. We find that the implicit value of travel time (VTT) is in g...
The Value of Travel Time Savings (VTTS) is a central parameter in transport economics and travel demand modelling. It is expected that vehicle automation will decrease travellers' VTTS on roads due to the possibility of performing more pleasant and useful activities while driving (e.g. reading and sleeping). The VTTS of autonomous vehicles (AV) is...
Introduction
The economic value of safety represents an important guide to transport policy, and more studies on individuals’ valuation of road safety are called for. This paper presents a stated preference study of the value of preventing fatal and serious injuries involving bus passengers and car drivers in road accidents.
Objectives
Former valua...
english summary available here: https://www.toi.no/getfile.php/1348780/Publikasjoner/T%C3%98I%20rapporter/2018/1648-2018/1648-2018_Summary.pdf
English summary available here: https://www.toi.no/getfile.php/1344643/Publikasjoner/T%C3%98I%20rapporter/2017/1558-2017/1558-2017_Summary.pdf
english summary can be found here: https://www.toi.no/getfile.php/1346465/Publikasjoner/T%C3%98I%20rapporter/2017/1596-2017/1596-2017_Summary.pdf
The management and understanding of modal split between public transport (PT) modes is of interest for numerous reasons. It may, for example, be desirable to stimulate passengers to switch from crowded buses and over to higher capacity rail. This requires a good understanding of drivers of transit modal substitution. The evidence put forward in thi...
The vast majority of studies on urban travel demand focus on the effect on the demand of one travel mode given a change in the characteristics of that same transport mode, for example, own-elasticities. comparatively little is known about cross-elasticities of demand. In particular, there is a need for a better understanding of the underlying mecha...
Mode shift is at the core of sustainable transport in all world cities; yet we know comparatively little about it. While there is ample evidence of within-mode demand effects, we know in general very little about what mode these new passengers came from. This paper addresses this issue by gathering existing evidence of cross-mode demand interaction...
MPM23 er et brukervennlig, regnearkbasert modellverktøy for analyser av transportmiddelvalg i Oslo og Akershus. Modellen beregner endringer i markedsandeler for bil (fører og passasjer), gange, sykkel, tog, buss og trikk/t-bane som følge av tiltak. MPM23 kan derfor – i motsetning til mange andre etterspørselsmodeller – brukes for å studere konkurra...
Binary stated choices between traveller’s current travel mode and a not-yet-existing mode might be used to build a forecasting model with all (current and future) travel alternatives. One challenge with this approach is the identification of the most appropriate inter-alternative error structure of the forecasting model.
By critically assessing th...
Decreasing marginal dis-utility of travel time and cost are often found in travel mode choice models that are estimated on cross-sectional data. From economic theory, however, we should expect that households have increasing marginal dis-utilities from money and time spent on transportation. Departing from this contradiction, which is widely neglec...
Barrier effects can impact cyclists’ travel time, level of comfort, and risk of accidents. When eliciting the valuation of these elements, simultaneous estimation is called for because the perceived level of comfort may depend on the accident risk. In this paper we present the results of a choice experiment in which cyclists traded off cycling time...
There is a growing body of evidence of public transport passenger willingness to pay (WTP) for soft quality improvements, such as information, comfort, security and on-board facilities. There is also evidence to suggest that the benefits of soft quality improvements by far exceed their costs. However in order to include such measures in standard pr...
Recent research has proposed fitting responses from discrete choice experiments to asymmetric value functions consistent with prospect theory, taking into account respondents’ reference points in their valuation of choice attributes. Previous studies have mainly concentrated on travel time and cost attributes, while evidence regarding road safety a...
Differences in Value of Travel Time Savings (VTTS) between travel modes can play a decisive role in the ranking of projects that affect the travel time of different travel modes. Conceptually, between-mode differences in VTTS can be decomposed into the user type effect (UE) that accounts for differences in characteristics of user groups (e.g. incom...
Stated choice studies have been applied regularly to the valuation of time savings and other attributes of travelling as perceived by individuals. In such experiments, respondents often provide reference levels for the attributes and the hypothetical choices presented to them are pivoted around actual behaviour. However, most individuals are not ab...
Bayesian approach to studydata from a choice experiment on the choice of High-Speed-Rail
Estimate relative values for time spend in tunnel and with free sight
The concept of Universal Design (UD) in local public transport planning refers to the requirements on facilities and vehicles in order to accommodate and increase the accessibility of as many passengers as possible. It is however often ignored that UD can provide benefits to not only special need groups but also to all passengers.UD measures can of...
Background
There is comprehensive evidence of the positive health effects of physical activity, and transport authorities can enable this by developing infrastructure for cycling and walking. In particular, cycling to work or to school can be a relatively high intensity activity that by itself might suffice for maximum health gain. In this paper, w...
This paper presents a survey-based economic evaluation of security measures protecting against the risk of aviation terrorism. A sample of Norwegians were asked to state their choices between different air travel al-ternatives, i.e. travel time, trip costs, fatalities in terrorist acts on air transport and type of passenger screen-ing. Screening wa...
Projects
Projects (2)
Official title: Machine learning for computational efficient predictions of long-term congestion patterns in large-scale transport systems (PRELONG)
* Develop and build an AI-based sketch planning tool that reliably and quickly predicts congestion patterns in complex transport systems
* Improve understanding of congestion patterns and congestion mitigation measures (case: Oslo metropolitan area)
* Advance AI-based transportation research in Norway and in the international research community
