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Examining the impact of weather variability on non-commuters' daily activity-travel patterns in different regions of Sweden
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Transport and Location Analysis. KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Transport and Location Analysis. KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.ORCID iD: 0000-0001-7124-7164
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Transport and Location Analysis. KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.ORCID iD: 0000-0001-5290-6101
2014 (English)In: Journal of Transport Geography, ISSN 0966-6923, E-ISSN 1873-1236, Vol. 39, 36-48 p.Article in journal (Refereed) Published
Abstract [en]

By jointly modelling the routine and leisure activity travel engagements of non-commuters in different regions of Sweden, this paper explores the interactions between time allocation, travel demand and mode choice under different weather conditions. Combined weather and travel survey datasets that span a period of over 13 years were analysed. Simultaneous Tobit models were applied to explore the interactions among these activity travel indicators, whilst municipalities' unique conditions and heterogeneities between different time-points were taken into account. The model results reveal the trade-offs between routine and leisure activities in terms of activity duration, number of trips and travel time. Positive mutual endogeneity was found between slow-mode share in routine and leisure trips. The results also highlight the trade-offs between routine and leisure activities under abnormal weather conditions. Regional differences between weather effects are substantial due to differences in direct, indirect and total marginal effects. Between-municipality variability constitutes a considerable part of the variability in activity duration and travel time. Between-municipality variability in leisure activity duration and leisure travel time is larger in northern Sweden, while that of routine activity duration and routine travel time is larger in central Sweden, after weather and social demographics have been controlled.

Place, publisher, year, edition, pages
2014. Vol. 39, 36-48 p.
Keyword [en]
Weather variability, Activity-travel patterns, Regional difference, Simultaneous Tobit models, Total marginal effect
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-156137DOI: 10.1016/j.jtrangeo.2014.06.019ISI: 000343627900004Scopus ID: 2-s2.0-84904296486OAI: oai:DiVA.org:kth-156137DiVA: diva2:769523
Note

QC 20141209

Available from: 2014-12-08 Created: 2014-11-21 Last updated: 2017-12-05Bibliographically approved
In thesis
1. Understanding the Impacts of Weather and Climate Change on Travel Behaviour
Open this publication in new window or tab >>Understanding the Impacts of Weather and Climate Change on Travel Behaviour
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Human behaviour produces massive greenhouse gas emissions, which trigger climate change and more unpredictable weather conditions. The fluctuation of daily weather corresponds to variations of everyday travel behaviour. This influence, although is less noticeable, can have a strong impact on the transport system. Specifically, the climate in Sweden is becoming warmer in the recent 10 years. However, it is largely unknown to what extent the change of travel behaviour would respond to the changing weather. Understanding these issues would help analysts and policy makers incorporate local weather and climate within our policy design and infrastructure management.

The thesis contains eight papers exploring the weather and climate impacts on individual travel behaviour, each addressing a subset of this topic. Paper I explores the weather impact on individual’s mode choice decisions. In paper II and III, individual’s daily activity time, number of trips/trip chains, travel time and mode shares are jointly modelled. The results highlight the importance of modelling activity-travel variables for different trip purposes respectively. Paper IV develops a namely nested multivariate Tobit model to model activity time allocation trade-offs. In paper V, the roles of weather on trip chaining complexity is explored. A thermal index is introduced to better approximate the effects of the thermal environment. In paper VI, the role of subjective weather perception is investigated. Results confirm that individuals with different socio-demographics would have different subjective weather perception even given similar weather conditions. Paper VII derives the marginal effects of weather variables on transport CO2 emissions. The findings show more CO2 emissions due to the warmer climate in the future. Paper VIII summaries the existing findings in relations between weather variability and travel behaviour, and critically assesses the methodological issues in previous studies. 

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2016. 217 p.
Series
TRITA-TSC-PHD, 16-005
Keyword
impacts of weather, climate change, travel survey, spatial heterogeneity, activity-travel pattern, weather perception, passenger transport CO2 emission
National Category
Transport Systems and Logistics
Research subject
Transport Science
Identifiers
urn:nbn:se:kth:diva-187019 (URN)978-91-87353-89-5 (ISBN)
Public defence
2016-06-10, L1, Drottning Kristinas väg 30, Lantmäteri, våningsplan 3, KTH Campus, Stockholm, 11:05 (English)
Opponent
Supervisors
Projects
Understanding the complexity of changes of travelers’ activity-travel choices and related transport CO2 emissions due to the variation of weather and climate in Sweden (Centre för Transport Studie, projekt kod: 446)Understanding the impacts of weather and climate change on travel behavior (Centre för Transport Studie, projekt kod: 291)
Note

QC 20160516

Available from: 2016-05-16 Created: 2016-05-16 Last updated: 2016-05-16Bibliographically approved

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Susilo, Yusak O.Karlström, Anders

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