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Wang, Q., Jonsson, R. D. & Karlström, A. (2026). Dynamic scheduling modelling of congestion pricing: Assessing travel behaviour and welfare impacts in Greater Helsinki. Transport Policy, 177, 103929
Open this publication in new window or tab >>Dynamic scheduling modelling of congestion pricing: Assessing travel behaviour and welfare impacts in Greater Helsinki
2026 (English)In: Transport Policy, ISSN 0967-070X, E-ISSN 1879-310X, Vol. 177, p. 103929-Article in journal (Refereed) Published
Abstract [en]

Congestion charging systems have emerged as a promising policy tool for mitigating traffic congestion and reducing emissions in urban areas. This study applies a dynamic activity scheduling model to assess the effects of congestion pricing in the Greater Helsinki region. By simulating daily activity patterns and travel behaviour, we analyse the impacts of congestion charges on mode choice, destination selection, and departure time adjustments. Our findings reveal a 10% reduction in car use and a 27% decrease in total car kilometres travelled, demonstrating the effectiveness of congestion pricing in alleviating traffic congestion. However, the analysis also highlights the potential equity concerns, with impacts varying across locations and commuting patterns. These insights contribute to the growing body of evidence on the behavioural and distributional consequences of congestion pricing, offering valuable guidance for policymakers.

Place, publisher, year, edition, pages
Elsevier BV, 2026
Keywords
Dynamic scheduling, Congestion pricing, Accessibility, Welfare distribution
National Category
Transport Systems and Logistics
Identifiers
urn:nbn:se:kth:diva-374451 (URN)10.1016/j.tranpol.2025.103929 (DOI)
Note

QC 20251218

Available from: 2025-12-18 Created: 2025-12-18 Last updated: 2025-12-18Bibliographically approved
McCarthy, S., Jonsson, R. D., Wang, Q. & Karlström, A. (2025). A latent class dynamic discrete choice model for travel behaviour and scheduling. Travel Behaviour and Society, 39, Article ID 100978.
Open this publication in new window or tab >>A latent class dynamic discrete choice model for travel behaviour and scheduling
2025 (English)In: Travel Behaviour and Society, ISSN 2214-367X, Vol. 39, article id 100978Article in journal (Refereed) Published
Abstract [en]

In travel behaviour modelling, latent class models are used to represent underlying discrete groupings of behavioural preferences. The paper presents a latent class extension of a dynamic discrete choice model (DDCM) and applies the model to the problem of activity demand generation and scheduling. The DDCM is a recursive multinomial logit model where agents make sequential decisions in time, maximizing the expected future utility of their decisions in a random utility maximization framework. It generates activities and their associated travel within a full day schedule, endogenously respecting agents' inherent time-space constraints. The latent class DDCM builds on the base model by representing heterogeneous lifestyle preferences. A specification of the model is estimated on a Stockholm travel survey and uses age, income level, gender, car ownership and presence of children in the household as classifying variables. The models result in classes which primarily represent modality styles, finding car-, transit- and bike-primary behavioural groups as well as a multimodal group, each linked with different socio-demographic characteristics. The models improve over non-latent class reference models and provide insight into the structure of heterogeneity in travel behaviour preferences in Stockholm.

Place, publisher, year, edition, pages
Elsevier BV, 2025
Keywords
latent class model, dynamic discrete choice, activity-based model, scheduling model, behavioural heterogeneity, modality styles
National Category
Transport Systems and Logistics
Research subject
Transport Science, Transport Systems
Identifiers
urn:nbn:se:kth:diva-356358 (URN)10.1016/j.tbs.2024.100978 (DOI)001394619600001 ()2-s2.0-85212837572 (Scopus ID)
Note

Part of ISBN 978-1853397233

QC 20250304

Available from: 2024-11-14 Created: 2024-11-14 Last updated: 2025-03-04Bibliographically approved
Wang, Q. & Simoni, M. D. (2025). Crowdshipping preferences among public transit riders: Insights from Stockholm, Sweden. Research in Transportation Economics, 113, Article ID 101635.
Open this publication in new window or tab >>Crowdshipping preferences among public transit riders: Insights from Stockholm, Sweden
2025 (English)In: Research in Transportation Economics, ISSN 0739-8859, E-ISSN 1875-7979, Vol. 113, article id 101635Article in journal (Refereed) Published
Abstract [en]

Crowdshipping has grown in popularity as a sharing economy model, but ensuring its sustainability remains a challenge. This study explores how public transit riders can be engaged in crowdshipping services to avoid generating additional motorized traffic. The propensity of public transit users to participate in crowdshipping and their responses to alternative task attributes are explored through an in-person survey conducted at selected subway stations in Stockholm. The influence of different socio-demographic factors and trip features on the propensity for participation is examined using statistical analysis and regression models. To quantify the trade-offs among required detours, compensation, and parcel weight when accepting crowdshipping tasks, alternative discrete choice models are investigated. The results reveal that factors such as age, employment, and income, along with trip characteristics, significantly affect participation propensity. The estimated willingness to work as a crowdshipper aligns with previous studies showing that age and income level were important factors. A latent class model further reveals a clear division between two groups: one younger, lower income group with higher willingness to work, and another older, higher-income group with lower willingness. As a result, dedicated strategies need to be considered by future crowdshipping service providers and policymakers.

Place, publisher, year, edition, pages
Elsevier BV, 2025
Keywords
Crowdshipping, Latent class, Public transit, Stated preference
National Category
Transport Systems and Logistics Economics
Identifiers
urn:nbn:se:kth:diva-372881 (URN)10.1016/j.retrec.2025.101635 (DOI)001574089900001 ()2-s2.0-105020598765 (Scopus ID)
Note

QC 20251117

Available from: 2025-11-17 Created: 2025-11-17 Last updated: 2025-11-17Bibliographically approved
Paulusová, I., Sharmeen, F. & Wang, Q. (2025). Perceived Accessibility Scale Adapted to Cycling: What Insights can it Provide in the Context of Stockholm?. Transport Findings, 2025
Open this publication in new window or tab >>Perceived Accessibility Scale Adapted to Cycling: What Insights can it Provide in the Context of Stockholm?
2025 (English)In: Transport Findings, E-ISSN 2652-0397, Vol. 2025Article in journal (Refereed) Epub ahead of print
Abstract [en]

The study adapted the Perceived Accessibility Scale to assess perceived cycling accessibility in Stockholm, presenting a new case study of its application. Using recent survey data and factor analysis, the scale demonstrated strong reliability in capturing perceptions. Hypothesis testing indicated limited effects of most sociodemographic factors on perceived cycling accessibility, except for gender among frequent cyclists. Mobility-related characteristics and peer influence had stronger effects, while spatial variables were insignificant. A significant positive association was also found between perceived cycling accessibility and cycling frequency. These findings align with expectations and reflect behaviour of Swedish cyclists.

Place, publisher, year, edition, pages
Network Design Lab - Transport Findings, 2025
Keywords
cycling, Perceived accessibility, perceived accessibility scale, sustainable mobility
National Category
Transport Systems and Logistics
Identifiers
urn:nbn:se:kth:diva-371176 (URN)10.32866/001c.143997 (DOI)2-s2.0-105017064216 (Scopus ID)
Note

QC 20251009

Available from: 2025-10-09 Created: 2025-10-09 Last updated: 2025-10-09Bibliographically approved
Jenelius, E., Andersson, J., Fröidh, O., Jonsson, R. D., Ma, Z., Zefreh, M. M. & Wang, Q. (2023). Prestudy on Establishing a Research Project on Forecasting Methodology. Stockholm: KTH Royal Institute of Technology
Open this publication in new window or tab >>Prestudy on Establishing a Research Project on Forecasting Methodology
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2023 (English)Report (Other academic)
Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2023. p. 15
Series
TRITA-ABE-RPT ; 2328
National Category
Transport Systems and Logistics
Identifiers
urn:nbn:se:kth:diva-341776 (URN)
Funder
Swedish Transport Administration, TRV 2022/32545
Note

QC 20240102

Available from: 2024-01-02 Created: 2024-01-02 Last updated: 2024-01-02Bibliographically approved
Jenelius, E., Brundell-Freij, K., Wang, Q., Cebecauer, M. & van Amelsfort, D. (2020). Bilrestider i storstad: Variationsmönster och upplevd osäkerhet (VARIA): Slutrapport för projekt som genomförts på uppdrag av Trafikverket. KTH Royal Institute of Technology
Open this publication in new window or tab >>Bilrestider i storstad: Variationsmönster och upplevd osäkerhet (VARIA): Slutrapport för projekt som genomförts på uppdrag av Trafikverket
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2020 (Swedish)Report (Other academic)
Abstract [sv]

Den här rapporten utgör slutrapport för projektet Bilrestider i storstad: Variationsmönster och upplevd osäkerhet (VARIA) som genomförts på uppdrag av Trafikverket (TRV 2018/16380).Det övergripande syftet med det här projektet har varit att vidareutveckla metoder för samhällsekonomiska kalkyler för olika åtgärder i trafiksystemet. Projektet bidrar till detta mål genom att utveckla kunskap om hur olika komponenter i restidsvariation påverkar trafikanternas faktiska erfarenhet av restidsvariation, och trafikanternas upplevelse av systematisk restidsvariation och deras restidsosäkerhet. 

Forskningsfrågorna studeras i två delstudier. En delstudie fokuserar på trafikanternas förståelse av restidsvariation, och deras upplevda restidsosäkerhet. Denna delstudie baseras på ett teoretiskt ramverk och två datakällor: (1) en enkätstudie av hur tillfrågade bilister beskriver den restidsfördelning de förväntar sig (och därmed kan antas planera för), samt (2) empiriska data som beskriver hur den verkliga restiden längs samma rutter varierar i olika dimensioner.

Den andra delstudien fokuserar på sambandet mellan hur restiden varierar i data som uppmätts generellt, och den restidsvariation som enskilda bilister faktiskt utsätts för. Här utnyttjas ett statistiskt ramverk och en tredje datakälla: restidsobservationer från olika rutter på enskild passagenivå med beständiga fordons-ID.

En grundläggande svaghet med den första delstudien ligger i att respondenterna i sina uppgivna restider inte tycks ha avgränsat sig på det sätt som var avsikten (bara rena körtider mellan de uppgivna ändnoderna). Trots detta anser vi att det utvecklade analytiska ramverket gör det möjligt att dra vissa övergripande slutsatser med bäring på studiens inledande frågeställningar.

Resultaten från den första delstudien stöder sammantaget hypotesen att resenärerna i gemen i huvudsak baserar sin planering och schemaläggning inför en specifik resa på mer generella restidsprediktioner, som är underbyggda av deras samlade erfarenhet, (snarare än specifika erfarenheter eller annan information om restiden på den specifika rutten). Resultaten visar också att förare som kan bygga under sinna uppskattningar med mer specifik erfarenhet, har minst lika svårt att förutse hur restiden varierar, såväl när det gäller ”systematisk” som ”slumpmässig” variation, som förare som saknar specifik erfarenhet från just den rutt för vilken restiden skall uppskattas. 

Respondenternas prediktioner av restidsvariation är sämre än deras prediktioner av förväntad restid. Detta stöder hypotesen att restidens faktiska variation för en viss specifik rutt, under en viss specifik tid på dagen ger en långt ifrån komplett bild av den restidsosäkerhet som resenärer måste ta höjd för i sin planering och schemaläggning. Om samhällsekonomiska värderingar av restidsosäkerhet tillämpas direkt på uppmätt (eller predicerad) restidsvariation, utan hänsyn till det komplexa sambandet dem emellan, kan värdet av minskad restidsvariation såväl över- som underskattas. 

I den andra delstudien har vi undersökt i vilken utsträckning fordonen som korsar en rutt är återkommande resenärer, och hur den andelen beror av olika attribut. Med hjälp av data från Bluetooth- och Wifi-sensorer under en tremånadersperiod har vi funnit att det genomsnittliga antalet resor per fordons-ID är högre mot staden på morgontoppen och ut från staden på eftermiddagen, vilket är förenligt med vetskapen att pendlingsresor tenderar att ha den högsta regelbundenheten över dagar. Vi har även föreslagit en modell för hastighetsfördelningar hos rutter, som separerar variationen i en komponent med variation mellan resenärer, och en komponent med variation inom varje resenär (”individuell erfarenhet av restidsvariation”). Resultaten av modellberäkningar visar att den relativa individuella (inom resenären) variationen är betydligt högre i pendlingsriktningen (mot staden på morgonen och ut från staden på eftermiddagen) och på rutter med hög trängselnivå. Trängsel tycks alltså vara den viktigaste faktorn som förklarar den relativa restidsosäkerheten. 

På grund av en viss omnumrering över tiden av fordons-ID i datan som använts är den exakta frekvensen med vilken resenärer använder en rutt samt storleken på variabiliteten mellan resenärer och inom varje resenär svåra att skatta. Den beräknade frekvensen är låg, vilket i och för sig är i linje med analyser av data från trängselavgiftsportaler. Eftersom omhashningen rimligen är oberoende av geografi och tid på dagen så har vi kunnat göra relativa studier mellan rutter och tidsperioder. Resultaten indikerar att det måste göras en åtskillnad mellan den variabilitet som en enskild resenär kan ha erfarenhet av, och den totala variabiliteten som vanligtvis används i bedömningarna av restiders tillförlitlighet. Den relativa storleken på de två termerna varierar systematiskt med ruttegenskaper och tidsperioder. Utan denna åtskillnad kan kostnaderna för restidsvariabilitet överskattas

Place, publisher, year, edition, pages
KTH Royal Institute of Technology, 2020. p. 48
National Category
Transport Systems and Logistics
Identifiers
urn:nbn:se:kth:diva-333089 (URN)
Funder
Swedish Transport Administration, TRV 2018/16380
Note

QC 20230726

Available from: 2023-07-25 Created: 2023-07-25 Last updated: 2023-07-26Bibliographically approved
Liu, C., Wang, Q. & Susilo, Y. (2019). Assessing the impacts of collection-delivery points to individual's activity-travel patterns: A greener last mile alternative?. Transportation Research Part E: Logistics and Transportation Review, 121, 84-99
Open this publication in new window or tab >>Assessing the impacts of collection-delivery points to individual's activity-travel patterns: A greener last mile alternative?
2019 (English)In: Transportation Research Part E: Logistics and Transportation Review, ISSN 1366-5545, E-ISSN 1878-5794, Vol. 121, p. 84-99Article in journal (Refereed) Published
Abstract [en]

The transport impacts of collection-delivery points (CDPs), as an alternative to home delivery, are rarely studied. As e-shopping becomes increasingly popular, trips to collect deliveries at CDP, especially by car travel, may generate a considerable amount of external effects, such as emissions. Therefore, this paper analysed the "picking up/leaving goods" trips selected from the Swedish National Travel Survey and jointly modelled the individuals' mode choice and trip chaining decisions using a panel cross-nested logit model. The roles of trip chain characteristics, individual socio-demographics and land use characteristics on each trip chain and mode choice combination are investigated. The results indicate observed and unobserved heterogeneities of trip chaining and mode choice decisions among populations. Young adults living with partners/spouses, single adults with children and partnered adults with children have the preference of using cars in collection-delivery trips compared to other life-cycle groups. A sensitivity analysis is carried out to estimate the effect of distance to CDPs on vehicle kilometres travelled. The calibrated model is used to estimate the VICE of collection-delivery trips in the greater Stockholm area. The results indicate a 22.5% reduction of VKT from collection-delivery trips by relocating 5% CDPs from urban areas to suburban and rural areas.

Place, publisher, year, edition, pages
Elsevier BV, 2019
Keywords
Collection-delivery trip, Panel cross nested logit model, Mode choice, Trip chaining
National Category
Transport Systems and Logistics
Identifiers
urn:nbn:se:kth:diva-244561 (URN)10.1016/j.tre.2017.08.007 (DOI)000457948700006 ()2-s2.0-85028303763 (Scopus ID)
Funder
Integrated Transport Research Lab (ITRL)Swedish Transport Administration
Note

QC 20190312

Available from: 2019-03-12 Created: 2019-03-12 Last updated: 2025-12-18Bibliographically approved
Cats, O., Wang, Q. & Zhao, Y. (2015). Identification and classification of public transport activity centres in Stockholm using passenger flows data. Journal of Transport Geography, 48, 10-22, Article ID 1735.
Open this publication in new window or tab >>Identification and classification of public transport activity centres in Stockholm using passenger flows data
2015 (English)In: Journal of Transport Geography, ISSN 0966-6923, E-ISSN 1873-1236, Vol. 48, p. 10-22, article id 1735Article in journal (Refereed) Published
Abstract [en]

Urban geography could be characterized by analysing the patterns that describe the flows of people and goods. Measuring urban structures is essential for supporting an evidence-based spatial planning policy. The objective of this study is to examine how the spatial-temporal distribution of public transport passenger flow could be used to reveal urban structure dynamics. A methodology to identify and classify centres based on mobility data was applied to Metropolitan Stockholm in Sweden using multi-modal public transport passenger flows. Stockholm is known for its long-term monocentric planning with a dominant central core and radial public transport system. Strategic nodes along its radial public transport system have been a focus for development of sub-centres. Although the regional planning policy embraces a shift towards a polycentric planning policy, the results indicate that this has not been realized insofar.

Place, publisher, year, edition, pages
Elsevier, 2015
Keywords
Passenger flows, Polycentric, Spatial clustering: urban planning, Urban centres, classification, identification method, metropolitan area, public transport, spatial analysis, spatiotemporal analysis, travel behavior, urban transport, Stockholm [Stockholm (CNT)], Stockholm [Sweden], Sweden
National Category
Social and Economic Geography
Identifiers
urn:nbn:se:kth:diva-175611 (URN)10.1016/j.jtrangeo.2015.08.005 (DOI)000363821800002 ()2-s2.0-84940398088 (Scopus ID)
Note

QC 20151102

Available from: 2015-11-02 Created: 2015-10-19 Last updated: 2022-12-12Bibliographically approved
Ceccato, V., Cats, O. & Wang, Q. (2015). The Geography of Pickpocketing at Bus Stops: An Analysis of Grid Cells. In: Ceccato, Vania; Newton, Andrew (Ed.), Safety and Security in Transit Environments: An Interdisciplinary Approach: (pp. 76-98). London: Springer Nature
Open this publication in new window or tab >>The Geography of Pickpocketing at Bus Stops: An Analysis of Grid Cells
2015 (English)In: Safety and Security in Transit Environments: An Interdisciplinary Approach / [ed] Ceccato, Vania; Newton, Andrew, London: Springer Nature , 2015, p. 76-98Chapter in book (Other academic)
Abstract [en]

Bus stops, as any other type of transport node, may be criminogenic places by nature. Evidence from North American and British studies has repeatedly shown that areas that ‘contain’ a bus stop are more criminogenic than those without (Levine and Wachs, 1986; Loukaitou-Sideris 1999; Loukaitou-Sideris et al., 2002; Newton and Bowers, 2007; Smith and Cornish 2006; Tsai et al., 2011). Yet despite such findings, the link between bus stops and crime has been controversial (Kooi, 2013) and highly dependent on North American and British evidence. If one randomly selects two areas, the first one containing a bus stop and the second not, is it more likely that the first area has more pickpocketing than the second one? Previous studies have attempted to isolate the effect of bus stops from that caused by the place’s attributes (where bus stops are located) on crime. Surprisingly, the nature of bus stops is often neglected in the analysis. This article addresses this issue by assessing the potential impact of passenger flow and vehicle frequency on the geography of pickpocketing.

Place, publisher, year, edition, pages
London: Springer Nature, 2015
National Category
Civil Engineering
Identifiers
urn:nbn:se:kth:diva-374452 (URN)10.1057/9781137457653_5 (DOI)
Note

QC 20251218

Available from: 2025-12-18 Created: 2025-12-18 Last updated: 2025-12-18Bibliographically approved
Wang, Q., Karlström, A. & Sundberg, M. (2014). Scheduling choices under rank dependent utility maximization. In: Transportation: Can we do more with less resources? – 16th Meeting of the Euro Working Group on Transportation – Porto 2013. Paper presented at 16th Meeting of the Euro-Working-Group-in-Transportation, SEP, 2013, Porto, Portugal (pp. 301-310). Elsevier
Open this publication in new window or tab >>Scheduling choices under rank dependent utility maximization
2014 (English)In: Transportation: Can we do more with less resources? – 16th Meeting of the Euro Working Group on Transportation – Porto 2013, Elsevier, 2014, p. 301-310Conference paper, Published paper (Refereed)
Abstract [en]

Scheduling preferences, derived under the assumption of expected utility maximization, can be used for measuring the value of travel time variability. As an alternative to the expected utility maximization, the rank dependent utility is chosen in this paper. Considering a flexible probability weighting for ranked outcomes, two frequently applied scheduling models are derived and estimated on a data set with specific travel time distributions. Optimistic respondents are observed. Allowing for heterogeneity of scheduling preferences improves the model performance significantly. We also found evidence for valuing excessive travel time, which is not included in the traditional scheduling model specifications.

Place, publisher, year, edition, pages
Elsevier, 2014
Series
Procedia Social and Behavioral Sciences, ISSN 1877-0428 ; 111
Keywords
Rank dependnent utility, probability weighting, scheduling model, value of travel time variability
National Category
Transport Systems and Logistics
Identifiers
urn:nbn:se:kth:diva-146588 (URN)10.1016/j.sbspro.2014.01.063 (DOI)000335582500031 ()
Conference
16th Meeting of the Euro-Working-Group-in-Transportation, SEP, 2013, Porto, Portugal
Note

QC 20140613

Not duplicate with DiVA ID: diva2:588579

Available from: 2014-06-13 Created: 2014-06-12 Last updated: 2025-12-19Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-6520-1458

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