Measuring the car ownership impact of free-floating car-sharing – A case study in Basel, Switzerland

Becker, Henrik; Ciari, Francesco; Axhausen, Kay W.

doi:10.1016/j.trd.2018.08.003

Cited by 128 publications

(59 citation statements)

References 30 publications

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“…With no direct purchasing and maintenance costs involved, and with expenditure on fuel and parking reduced, car-sharing is considered a cost-effective alternative to car ownership (Efthymiou et al 2013;Ferrero et al 2017). Car-sharing could also reduce private car-ownership (Liao et al 2018;Becker et al 2018), reduce emissions, vehicle mile travel, per capita fuel consumption and demand for parking, thereby reducing travel-induced impacts on the environment and society (Cervero et al 2007;Rodier 2009;Firnkorn and Müller 2011).…”

Section: Introductionmentioning

confidence: 99%

Modelling the determinants of car-sharing adoption intentions among young adults: the role of attitude, perceived benefits, travel expectations and socio-demographic factors

Acheampong

Siiba

2019

Transportation

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Major cities in developing countries are increasingly becoming motorized. Thus, effective solutions to address the negative impacts that come with rising car-ownership are needed as part of an overall travel demand management strategy. In developed and emerging economies, shared-mobility in the form of car-sharing is becoming popular as potentially lowcost and environmentally sustainable alternative to car-ownership. Yet, our understanding of car-sharing adoption and diffusion factors in developing countries is limited. In this study, we fill this gap by examining car-sharing adoption intentions among young adults aged between 18 and 35 years in Ghana, Sub-Saharan Africa. Using structural equation modelling, we model car-sharing adoption intentions based on a framework that integrates individuals' perception of the benefits of car-sharing, attitudes towards the environment and technology, trust of stewardship in car-sharing, perception of innovativeness of carsharing, travel expectations and socio-demographic factors. We found that pro-technology and pro-environmental attitudes correlate positively with perceived benefits of car-sharing. Perceived benefits of car-sharing, in turn, has the largest predictive effect on intentions to car-share. Other factors, including individuals' previous experience using Uber on-demand taxi services, gender, education, driver's licensure and expectation of comfortable and fast travel options, all predict car-sharing adoption intentions. While there exists an interest in both station-based and free-floating car-sharing services, more of the would-be users favour the latter than the former. Also, majority of the potential adopters (62%) would join a car-sharing service within the first 1 year of its introduction. An important finding is that dissatisfaction with existing public transit services underpins car-sharing intentions, implying that relying on car-sharing alone to meet travel needs, without a holistic strategy of providing quality and affordable public transit services, could lead to unsustainable outcomes.

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Section: Introductionmentioning

confidence: 99%

Modelling the determinants of car-sharing adoption intentions among young adults: the role of attitude, perceived benefits, travel expectations and socio-demographic factors

Acheampong

Siiba

2019

Transportation

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“…Quasi-experimental methods, in contrast, remove the issue of cognitive biases resulting from self-assessed counterfactuals and can control for confounding factors (that is not to say that quasi-experimental methods are sure to be internally valid-they also introduce other sources of bias, see Section 2.5.2). However, far fewer car-sharing impact studies make use of a quasi-experimental approach (i.e., References [8,9,13]). Of these, only Cervero et al [9] estimate changes in car-use caused by car-sharing.…”

Section: Review Of Methodsmentioning

confidence: 99%

Does Car-Sharing Reduce Car-Use? An Impact Evaluation of Car-Sharing in Flanders, Belgium

2020

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Private car-use is a major contributor of greenhouse gases. Car-sharing is often hypothesised as a potential solution to reduce car-ownership, which can lead to car-sharing users reducing their car-use. However, there is a risk that car-sharing may also increase car-use amongst some users. Existing studies on the impacts of car-sharing on car-use are often based on estimates of the users’ own judgement of the effects; few studies make use of quasi-experimental methods. In this paper, the impact of car-sharing on car-ownership and car-use in Flanders, Belgium is estimated using survey data from both sharers and non-sharers. The impact on car-use is estimated using zero-inflated negative binomial regression, applied to matched samples of car-sharing users and non-users. The results show that the car-sharing may reduce car-use, but only if a significant number of users reduce their car-ownership. Policy intervention may therefore be required to ensure car-sharing leads to a reduction in car-use by, for example, discouraging car-ownership. Further research using quasi-experimental methods is required to illuminate whether the promise of car-sharing is reflected in reality.

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“…Many also focus on the question to which extent SMS replace car-trips or car-ownership or, on the contrary, replace public transport, cycling or walking trips, with mixed results. For example, while a number of studies have shown that station-based carsharing services lead to a net reduction in car ownership, the evidence for FFCS is more mixed: Becker et al [41] find that free floating carsharing is mostly used for non-regular trips and that 6 percent of carsharing users forego vehicle ownership due to the availability of the service. Shaheen et al [42] find similar results for North America, finding that FFCS contributes to a reduction of cars on the road.…”

Section: Assessing the Role Of Sms In Sustainable Mobility Transitionsmentioning

confidence: 99%

Reassessing the Role of Shared Mobility Services in a Transport Transition: Can They Contribute the Rise of an Alternative Socio-technical Regime of Mobility?

Ruhrort¹

2020

Preprint

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Recent years have seen a proliferation of platform-based “shared mobility services” (SMS) such as car-, bike-, and e-scootersharing in many cities in Germany and around the world. At the same time, these services have become the subject of intense debates: Are they replacing private car travel, thus contributing to sustainable mobility in cities? Or are they drawing users away from public transit and cycling while obstructing public space? From the perspective of sustainable mobility politics it seems far from clear which role these new services could play in transitioning to a less car-centric mobility system. While a number of potential effects and ensuing governance issues of shared mobility services (e.g. regarding questions of equitable access, data governance, the role of public versus private actors) have already been studied this article explores the role of shared mobility services (SMS) in triggering system dynamics and feedback loops in the context of sustainability transitions. The article connects questions regarding the sustainability effects of “shared mobility services” with the role of “push” measures to reduce private car traffic in cities. Using a theoretical framework from socio-technical transitions research and from the sociology of technology it describes the recent growth of shared mobility services in Berlin as an example of the upscaling dynamics of socio-technical niche innovations. Drawing on a series of workshops with mobility service providers and representatives of public authorities it analyses the potential for conflict as well as for coalition building between service providers and public authorities. Based on the theoretical concept of the role of feedback loops and windows of opportunity for transitions it shows how the market growth of shared mobility services added momentum to an already ongoing political debate over the legitimate use of public space in Berlin. Against this backdrop the article shows how growing numbers of car-, bike-, and e-scootersharing vehicles could open up windows of opportunity for re-distributing space away from private cars. The article concludes that supporting and regulating SMS will be key to steering their growth into the direction of sustainability.

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Measuring the car ownership impact of free-floating car-sharing – A case study in Basel, Switzerland

Cited by 128 publications

References 30 publications

Modelling the determinants of car-sharing adoption intentions among young adults: the role of attitude, perceived benefits, travel expectations and socio-demographic factors

Modelling the determinants of car-sharing adoption intentions among young adults: the role of attitude, perceived benefits, travel expectations and socio-demographic factors

Does Car-Sharing Reduce Car-Use? An Impact Evaluation of Car-Sharing in Flanders, Belgium

Reassessing the Role of Shared Mobility Services in a Transport Transition: Can They Contribute the Rise of an Alternative Socio-technical Regime of Mobility?

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