| 1. |
- Kazemzadeh, Khashayar, et al.
(författare)
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Electric bike navigation behaviour in pedestrian crowds
- 2020
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Ingår i: Travel Behaviour and Society. - : Elsevier BV. - 2214-367X. ; 20, s. 114-121
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Tidskriftsartikel (refereegranskat)abstract
- This study investigates the influence of pedestrian crowdedness on e-bike navigation behaviour in a controlled field experiment. The dataset includes a total of 1520 trajectories, including 18 pedestrians and one e-bike at a time. Based on the e-bike navigation through the pedestrians, the so-called “hindrance” concept was used to classify the data into two phases: passing (same-direction encounters), meeting (opposite-direction encounters). E-bike speed and its lateral position within the pedestrian crowds have been quantified to compare the passing and meeting phases. The results show that, the e-bike generally maintains an average speed during the meeting phase regardless of pedestrian crowdedness; however, the e-bike slows down in a linear trend when pedestrian crowdedness increases during the passing phase. Furthermore, the e-bike during the meeting phase has less lateral displacement compared to in the passing phase, which could be the consequence of the aforementioned speed and crowdedness relationship. The findings have applications for the e-bike level-of-service studies and also the design of bike tracks and sidewalks when there is mixed traffic of e-bikes and pedestrians.
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| 2. |
- Kazemzadeh, Khashayar, et al.
(författare)
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Expanding the Scope of the Bicycle Level-of-Service Concept: A Review of the Literature
- 2020
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Ingår i: Sustainability. - : MDPI AG. - 2071-1050. ; 12:7
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Tidskriftsartikel (refereegranskat)abstract
- Research into the bicycle level-of-service (BLOS) has been extensively conducted over the last three decades. This research has mostly focused on user perceptions of comfort to provide guidance for decision-makers and planners. Segments and nodes were studied first, followed by a network evaluation. Besides these investigations, several variables have also been utilized todepict the users’ perspectives within the BLOS field, along with other cycling research domains that simultaneously scrutinized the users’ preferences. This review investigates the variables and indices employed in the BLOS area in relation to the field of bicycle flow and comfort research. Despite generalagreement among existing BLOS variables and the adopted indices, several important research gaps remain to be filled. First, BLOS indices are often categorized based on transport components, while scarce attention has been paid to BLOS studies in trip-end facilities such as bicycle parking facilities.The importance of these facilities has been highlighted instead within research related to comfort. Second, the advantages of separated bike facilities have been proven in many studies; however, scarce research has addressed the challenges associated with them (e.g., the heterogeneity within those facilities due to the presence of electric bikes and electric scooters). This issue is clearly noticeablewithin the research regarding flow studies. Furthermore, network evaluation (in comparison to segment and node indices) has been studied to a lesser extent, whereas issues such as connectivity can be evaluated mainly through a holistic approach to the system. This study takes one step toward demonstrating the importance of the integration of similar research domains in the BLOS field toeliminate the aforementioned shortcomings.
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