Sigma Dolins

Ms. Sigma Dolins

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Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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13 July 2021 in Sustainability
Verified
Journal Article
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SDSigma Dolins
Sigma Dolins
HSHelena Strömberg
Helena Strömberg
YWYale Z. Wong
Yale Z. Wong
MKMariAnne Karlsson
MariAnne Karlsson
As connected, electric, and autonomous vehicle (AV) services are developed for cities, the research is conclusive that the use of these services must be shared to achieve maximum efficiency. Yet, few agencies have prioritised designing an AV system that focuses on dynamic ridepooling, and there remains a gap in the understanding of what makes people willing to share their rides. However, in 2017, the Australian transport authority Transport for New South Wales launched over a dozen trials for on-demand, shared public transport, including AVs. In this paper, we investigate the user willingness-to-share, based on experiences from one of these trials. Four focus groups (19 participants in total) were held in New South Wales with active users of either the trialled on-demand dynamic ridepooling service (Keoride) or commercial ridepooling (UberPool). Through thematic analysis of the focus group conversations, the cost, comfort, convenience, safety, community culture, and trust in authority emerged as factors that influenced the willingness-to-share. When presented with driverless scenarios, the focus group participants had significant concerns about the unknown behaviour of their co-passengers, revealing sharing anxiety as a significant barrier to the adoption of shared AVs. This paper identifies previously disregarded factors that influence the adoption of AVs and dynamic ridepooling and offers insights on how potential users’ sharing anxiety can be mitigated.

25 August 2021 in Sustainability
Verified
Journal Article
Open access
PDF file
SDSigma Dolins
Sigma Dolins
YWYale Z. Wong
Yale Z. Wong
JNJohn Nelson
John Nelson
Focus groups on shared, autonomous vehicles (SAVs) in New South Wales expressed “sharing anxiety”—an intense concern about the prospect of sharing their mobility journey with strangers, without a driver or authority figure present. This presents a significant barrier to the acceptance of SAVs, particularly autonomous public and on-demand transport (ODT), which is a major focus for Transport for New South Wales (TfNSW). Given this potential barrier, we interviewed (N = 13) operators, academics, and regulators with TfNSW to assess their role and abilities in overcoming sharing anxiety. However, our findings revealed a relative lack of awareness from experts in the mobility industry about the existence of sharing anxiety in users, suggesting additional barriers to adoption. We make suggestions for policy considerations for stakeholders that could mitigate sharing anxiety: promoting dynamic ridepooling products in commercial services, using tax breaks as incentivization; requiring ODT services and operators in jurisdiction to use a standardized, unified interface for users (“single-app”); shared, on-demand transport services likely need longer incubation/pilot periods in order for the sharing behavior to become culturally established. We conclude with a reflection on how COVID-19 has impacted the development of shared mobility and suggest further exploration in policy implementation.

14 February 2025 in Transportation
Verified
Journal Article
Open access
PDF file
SDSigma Dolins
Sigma Dolins
MKMariAnne Karlsson
MariAnne Karlsson
GSGöran Smith
Göran Smith
HSHelena Strömberg
Helena Strömberg
In exploring the societal readiness for shared autonomous vehicles (SAVs) in Swedish cities, this study profiles two distinct user groups—potential users and refusers—based on their willingness to share rides with strangers. By analyzing responses from a significant sample in Stockholm and Gothenburg, the study reveals key traits of these groups: potential users tend to be progressive, environmentally conscious men with public transport habits and positive experiences with AVs, while refusers are often women with traditional values, less formal education, and a preference for private cars, exhibiting concerns about safety and privacy. The research underscores the necessity of addressing the unique concerns of refusers to foster broader acceptance of SAVs. It highlights the potential of SAVs to revolutionize urban transport if societal concerns are aptly managed through policy and education, leveraging positive public transport experiences as a gateway to shared autonomous mobility.