Samira Dibaj
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Samira Dibaj has a total of 14 co-authors. Here are the top co-authors by number of shared publications:
- Milos N. Mladenovic
Aalto University
2 shared publications Miloš N. Mladenović
Aalto University, School of Engineering, Department of Built Environment
2 shared publications- Amir Golroo
Department of Civil and Environmental Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
1 shared publication - Aryan Hosseinzadeh
Department of Civil and Environmental Engineering University of Louisville W.S. Speed 40292 Louisville KY USA
1 shared publication Ayako Taniguchi
1 shared publication- Daniel Lopatnikov
Aalto University, School of Engineering, Department of Built Environment
1 shared publication
Latest Publications
- Open Access
- 30 December 2025
- Published by Liikennesuunnittelun Seura in Liikenne-vuosikirja
- Vol. 8, 59-91
Stranger Micromobilities
As urban mobility systems are undergoing transformations, there is a global trend of increasing diversity of battery-electric micromobility vehicles (EMVs). Such emerging unconventional vehicles include among others fat-tire e-scooters and electric unicycles. Despite this ongoing emergence, the current research has a notable gap in studying this phenomenon. With that gap in mind, this exploratory study investigates the growing presence of EMVs in Helsinki, Finland. Using 64 hours of observational video data collected from four key urban locations in 2021, this is the first study of the real-world usage of these emerging mobility technologies. The findings reveal a measurable presence of EMVs on city streets, contrasting with the dominant focus on standard e-scooters and e-bikes in most of recent research. In addition to quantifying the prevalence of EMVs relative to mainstream micromobility options, the study characterizes the types of vehicles observed, user demographics, and riding behaviors. While EMVs remain less common than conventional electric vehicles, their adoption in Helsinki is already significant. Riders tend to be highly skilled, with distinct patterns between delivery workers and general users. Initial insights suggest that EMV usage is driven by both recreational and practical motives. As an initial investigation, the study highlights the urgent need for further research into the emergence of novel and intermediary vehicles in urban mobility systems worldwide.
- 30 December 2025
- Published by Liikennesuunnittelun Seura in Liikenne-vuosikirja
- Vol. 8, 59-91
Open AccessStranger Micromobilities
As urban mobility systems are undergoing transformations, there is a global trend of increasing diversity of battery-electric micromobility vehicles (EMVs). Such emerging unconventional vehicles include among others fat-tire e-scooters and electric unicycles. Despite this ongoing emergence, the current research has a notable gap in studying this phenomenon. With that gap in mind, this exploratory study investigates the growing presence of EMVs in Helsinki, Finland. Using 64 hours of observational video data collected from four key urban locations in 2021, this is the first study of the real-world usage of these emerging mobility technologies. The findings reveal a measurable presence of EMVs on city streets, contrasting with the dominant focus on standard e-scooters and e-bikes in most of recent research. In addition to quantifying the prevalence of EMVs relative to mainstream micromobility options, the study characterizes the types of vehicles observed, user demographics, and riding behaviors. While EMVs remain less common than conventional electric vehicles, their adoption in Helsinki is already significant. Riders tend to be highly skilled, with distinct patterns between delivery workers and general users. Initial insights suggest that EMV usage is driven by both recreational and practical motives. As an initial investigation, the study highlights the urgent need for further research into the emergence of novel and intermediary vehicles in urban mobility systems worldwide.
- Open Access
- 5 November 2024
- Published by Elsevier in Travel Behaviour and Society
- Vol. 39
Latent class approach to classify e-scooter non-users: A comparative study of Helsinki and Tokyo
- 5 November 2024
- Published by Elsevier in Travel Behaviour and Society
- Vol. 39
Open AccessLatent class approach to classify e-scooter non-users: A comparative study of Helsinki and Tokyo
- Open Access
- 25 September 2024
- Published by Elsevier in Journal of Safety Research
- Vol. 91, 271-282
An exploration of e-scooter injuries and severity: Impact of restriction policies in Helsinki, Finland
- 25 September 2024
- Published by Elsevier in Journal of Safety Research
- Vol. 91, 271-282
Open AccessAn exploration of e-scooter injuries and severity: Impact of restriction policies in Helsinki, Finland
- Open Access
- 26 October 2021
- Published by MDPI AG in Sustainability
- Vol. 13 (21) , 11792
Where Have Shared E-Scooters Taken Us So Far? A Review of Mobility Patterns, Usage Frequency, and Personas
The emergence of micromobility services in the form of dockless shared e-scooters has resulted in a wide range of behavioral changes in urban environments. In order to effectively steer these changes towards sustainability targets, the characteristics of e-scooter trips and users’ behaviors should be understood further. However, there is a lack of systematic literature reviews in this domain. To address this gap, we provide a two-fold systematic literature review. The first aspect focuses on the categorization of temporal and spatial patterns of shared e-scooter usage. The second aspect focuses on a deeper understanding of e-scooter users’ behaviors, utilizing the principles of persona design. The analysis of temporal patterns highlights the commonality of midday, evening, and weekend peak usage across cities, while spatial patterns suggest e-scooters are used for traveling to recreational and educational land use, as well as city center areas. The synthesis of findings on users’ behaviors has resulted in six categories, with four user types based on usage frequency (one time, casual, power, and non-adopters), and two motivation-based personas (users who are not satisfied with current mobility options and users who have had positive travel experience from e-scooter usage). The overall findings provide important lessons for evaluating this emerging mobility service, which should be considered for steering its development in public-private stakeholder networks.
- 26 October 2021
- Published by MDPI AG in Sustainability
- Vol. 13 (21) , 11792
Open AccessWhere Have Shared E-Scooters Taken Us So Far? A Review of Mobility Patterns, Usage Frequency, and Personas
The emergence of micromobility services in the form of dockless shared e-scooters has resulted in a wide range of behavioral changes in urban environments. In order to effectively steer these changes towards sustainability targets, the characteristics of e-scooter trips and users’ behaviors should be understood further. However, there is a lack of systematic literature reviews in this domain. To address this gap, we provide a two-fold systematic literature review. The first aspect focuses on the categorization of temporal and spatial patterns of shared e-scooter usage. The second aspect focuses on a deeper understanding of e-scooter users’ behaviors, utilizing the principles of persona design. The analysis of temporal patterns highlights the commonality of midday, evening, and weekend peak usage across cities, while spatial patterns suggest e-scooters are used for traveling to recreational and educational land use, as well as city center areas. The synthesis of findings on users’ behaviors has resulted in six categories, with four user types based on usage frequency (one time, casual, power, and non-adopters), and two motivation-based personas (users who are not satisfied with current mobility options and users who have had positive travel experience from e-scooter usage). The overall findings provide important lessons for evaluating this emerging mobility service, which should be considered for steering its development in public-private stakeholder networks.
- Open Access
- 1 January 2017
- Published by Elsevier in Transportation Research Procedia
- Vol. 25, 2490-2499
Activities and Daily trips of University Students in a CBD area (Case Study: Amirkabir University of Technology)
- 1 January 2017
- Published by Elsevier in Transportation Research Procedia
- Vol. 25, 2490-2499
Open AccessActivities and Daily trips of University Students in a CBD area (Case Study: Amirkabir University of Technology)