Spartan Daily, May 9, 2017

Volume 148, Issue 41https://scholarworks.sjsu.edu/spartan_daily_2017/1039/thumbnail.jp

Book of abstracts of the 24th Euro Working Group on Transportation Meeting

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Feasibility Study of a Campus-Based Bikesharing Program at UNLV

Bikesharing systems have been deployed worldwide as a transportation demand management strategy to encourage active modes and reduce single-occupant vehicle travel. These systems have been deployed at universities, both as part of a city program or as a stand-alone system, to serve for trips to work, as well as trips on campus. The Regional Transportation Commission of Southern Nevada (RTCSNV) has built a public bikesharing system in downtown Las Vegas, approximately five miles from the University of Nevada, Las Vegas (UNLV). This study analyzes the feasibility of a campus-based bikesharing program at UNLV. Through a review of the literature, survey of UNLV students and staff, and field observations and analysis of potential bikeshare station locations, the authors determined that a bikesharing program is feasible at UNLV

Sustainable bike-sharing systems: characteristics and commonalities across cases in urban China

Bicycles are a desirable form of transportation for many reasons, including the fact that taking a bicycle is environmentally-friendly, economically cost-effective, a way to keep fit and healthy and, on occasions, an enjoyable social activity. This paper explores the characteristics and commonalities between particular bike-sharing systems in urban areas, with a view to deriving influences on the sustainability of such systems. The empirical study is China and the paper analyses bike-sharing systems in five Chinese cities. China is suffering from the severe negative consequences of high private vehicle usage in large and densely populated cities. Nevertheless a long history of bicycle usage in the country provides great potential for such a green form of travel to be part of public and private transportation. The findings show that bike-sharing systems have varying degrees of success. The configurations which seem the most sustainable consider and integrate elements relating to transport planning, system design and choice of business model. Key conclusions are that those responsible for developing policy and practices in relation to bike-sharing systems need to understand the diverse aspects of value for the stakeholders wishing to engage with such a system. Public bicycle sharing, as a Product Service System, needs to be carefully developed to appreciate the quality and timely interplay between the physical design of the system and the provision of services being offered. Keywords Bike-sharing system; Sustainable development; Sustainability; China; Case studie

The multi-vehicle stochastic-dynamic inventory routing problem for bike sharing systems

We address the operational management of station-based bike sharing systems (BSSs). In BSSs, users can spontaneously rent and return bikes at any stations in the system. Demand is driven by commuter, shopping, and leisure activities. This demand constitutes a regular pattern of bike usage over the course of the day but also shows a significant short-term uncertainty. Due to the heterogeneity and the uncertainty in demand, stations may run out of bikes or congest during the day. At empty stations, no rental demand can be served. At full stations, no return demand can be served. To avoid unsatisfied demand, providers dynamically relocate bikes between stations in reaction of current shortages or congestion, but also in anticipation of potential future demand. For this real-time decision problem, we present a method that anticipates potential future demands based on historical observations and that coordinates the fleet of vehicles accordingly. We apply our method for two case studies based on real-world data of the BSSs in Minneapolis and San Francisco. We show that our policy outperforms benchmark policies from the literature. Moreover, we analyze how the interplay between anticipation and coordination is essential for the successful operational management of BSSs. Finally, we reveal that the value of coordination and anticipation based on the demand-structure of the BSS under consideration

Space–time prism and accessibility incorporating monetary budget and Mobility-as-a-Service

Recent years in time geography have witnessed a flourishment of space–time prism (STP) modeling extensions for enhancing realism. However, there is little research on the incorporation of monetary budget in STP models to capture personal potential mobility space more realistically. This study considers both time and monetary budget constraints in STP modeling in a multimodal supernetwork integrating mobility-as-a-service and trip chains. We develop an efficient two-stage bi-criterion bidirectional search method to identify Pareto path sets to construct the resulting STP for conducting a flexible activity between two anchor nodes. To demonstrate the effectiveness of the proposed model and solution method, a case study with varying scenarios is conducted to evaluate the impacts of monetary budget on space–time accessibility and equality. The findings show that the ignorance of monetary budget overestimates accessibility and that MaaS, if not well designed, may not improve equality in accessibility as intended.</p

Fitting the bike to the chain: An analysis of transitions towards households integration of multi-modal cycling

This study explores the integration of cycling with public transport (Cycling-PT) from a household perspective. Varied household types were reflected in the individuals and families who participated in fourty-seven interviews and small group discussions in Nottingham and Leeds. Participants were recruited at railway stations, bike hubs and via activist and bicycle user groups and other gatekeeper organisations in the voluntary, local authority and education sectors between June 2016 and January 2017. Drawing on literature from the Activity Approach (AA), Mobility Biographies and structuration theory, an interview topic guide was used during individual interviews and small group discussions, supported by visual cue cards. Additional visual elicitation methods supported a second phase of discussions with individuals and families, the participants assembling 3D Styrofoam models of railway stations, using miniature Lego characters to recreate scenarios of journeys when they had combined Cycling-PT. Together, these methods provided insight into the variability of household travel behaviour over the life-course, mental models and reflexive processes. Interviews with eight family groups who took part with their children revealed how Cycling-PT had enabled the everyday activities of families through specialisation of roles for childcare and employment. Benefits to households included access to employment, particularly for people unable to drive. Time-savings over using buses to access rail journeys contrasted with more divided opinions on cost savings. Families integrated taking children to daycare, or school, with regular combined Cycling-PT commutes, carried by bicycle and train with their parents. Adolescent children travelling independently to visit relatives during school holidays. Childcare provision was influential in family travel decisions, collecting children at the end of the working day acting to constrain the combination of Cycling-PT. Parents valued secure storage for bicycles (and other mobility devices) at nurseries, schools, transport hubs and workplaces. Qualitative thematic analysis of interview transcripts using NVivo revealed beliefs and related to physical activity shared within households that had motivated the combination of cycling with PT. Participants associated improved mood with the integration of cycling with PT, the combined modes enabling the transition between work or study and household activities. Bicycle parking at PT hubs complemented carriage of bicycles on board trains to enable a full range of activities to be achieved. Workplace facilitation included flexible, or negotiated working arrangements, changing facilities, storage and showers for cyclists, salary-sacrifice bicycle purchase schemes and supportive colleagues. These findings have implications for policy, transport design, and offer directions for future research