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Carsharing: A Literature Review and a Perspective for
Information Systems Research
Kenan Degirmenci
Leibniz Universität Hannover, Institut für Wirtschaftsinformatik, 30167 Hannover,
E-Mail: [email protected]
Michael H. Breitner
Leibniz Universität Hannover, Institut für Wirtschaftsinformatik, 30167 Hannover,
E-Mail: [email protected]
Abstract
Private car ownership in the context of the ongoing urbanization is creating challenges concerning
environmental pollution, high energy costs, and limited and expensive parking. As a reaction to these
negative impacts, companies are developing new mobility alternatives to private car ownership. One
alternative is carsharing that provides individuals with cars from a fleet on an as-needed basis. To
create a conceptual structuring of the topic of carsharing, we conduct a literature review identifying 93
articles and six concepts, i.e., market analysis, location, travel behavior, information systems, electric
carsharing, and sustainability. Findings are discussed and implications for information systems
research are given.
Multikonferenz Wirtschaftsinformatik 2014 963
1 Introduction
Private car ownership in the context of the ongoing urbanization is creating challenges concerning
environmental pollution, high energy costs, and limited and expensive parking [36], [73], [74]. As a
reaction to these negative impacts, companies are developing new mobility alternatives to private car
ownership. One alternative is carsharing that provides individuals with cars from a fleet on an as-
needed basis [29], [80]. Carsharing is considered as a short-term car rental [50], [59], [87] allowing
members to gain the benefits of private car use without the costs and responsibilities of ownership
[25], [81]. According to Navigant Research1, the worldwide number of carsharing members will
continue to grow from 2.3 million in 2013 to more than 12 million by 2020. Carsharing services
revenue is estimated to grow from approximately $1 billion in 2013 to $6.2 billion by 2020.2 Referring
to Barth et al. [5], the growth of carsharing is substantially affected by the implementation of
intelligent transportation system technologies. In order to improve overall efficiency, user-friendliness,
and operational manageability of carsharing services, these technologies are used for various
information systems (IS) driven domains such as internet- and smartphone-based reservations, smart
card access to cars, onboard navigation, and global positioning system (GPS) technologies [4], [6],
[62], [78].
In research, the topic of carsharing is becoming more and more important as well. This paper makes a
theoretical contribution by creating a conceptual structuring of the topic and uncovering key concepts,
i.e., market analysis, location, travel behavior, information systems, electric carsharing, and
sustainability. An increasing number of studies investigate the topic of carsharing. With regard to IS
research, carsharing is becoming more important as well due to the growing relevance of Green IS
themes addressing issues of environmental sustainability (see, e.g., [46], [67]). This paper aims to give
an overview of the current research in the carsharing area by conducting a literature review. While our
literature review is in a holistic scope, our implications focus on IS research due to the fact that this
paper is addressed to the IS research community in the first place. We explore the following research
questions:
RQ1: What is the current state of research within the carsharing area?
RQ2: What is the perspective for information systems research in the context of carsharing?
This paper is structured as follows: first, we give a holistic literature review on the field of carsharing
and outline identified concepts. Following the discussion of our findings, we present implications for
IS research. Finally, limitations and conclusions are provided.
1 Navigant Research (2013a): Carsharing Services Will Surpass 12 Million Members Worldwide by 2020.
http://www.navigantresearch.com/newsroom/carsharing-services-will-surpass-12-million-members-worldwide-
by-2020 2 Navigant Research (2013b): Carsharing Programs: Carsharing Membership and Vehicle Fleets, Personal
Vehicle Reduction, and Revenue from Carsharing Services: Global Market Analysis and Forecasts.
http://www.navigantresearch.com/research/carsharing-programs
964 Kenan Degirmenci, Michael H. Breitner
2 Literature Review
2.1 Identifying the Relevant Literature and Structuring the Review
To give a holistic overview of the current research in the carsharing area, a literature review was
conducted. Following Webster and Watson3, an effective review “creates a firm foundation for
advancing knowledge” and “facilitates theory development, closes areas where a plethora of research
exists, and uncovers areas where research is needed.” Our underlying methodology is based on the
structured approach by Webster and Watson. First, we searched the following research databases for
relevant literature: ACM Digital Library, AISeL, Emerald, IEEE Xplore, INFORMS PubsOnLine,
JSTOR, ScienceDirect, SpringerLink, Taylor & Francis Online, Transportation Research Board’s
TRID, Web of Science, and Wiley Online Library. We used “carsharing” and “car sharing” as search
keywords, and intensively analyzed the literature for relevance. Only literature in the English language
and with a strong focus on commercial carsharing was considered; literature referring to peer-to-peer
carsharing, carpooling, ridesharing, bikesharing, etc. was excluded. Second, we conducted a backward
and a forward search. The backward search was carried out by reviewing the references of the
identified articles, and the forward search was performed using Web of Science to identify further
literature citing the identified articles. We identified 93 articles from 16 different journals and 8
conferences of the last ten years. Note that there is a dominant stream of carsharing literature from the
Transportation Research Board, which is well regarded in the transportation research community.
Third, as we read each article, we compiled a concept matrix identifying six concepts in the field of
carsharing research, i.e., market analysis, location, travel behavior, information systems, electric
carsharing, and sustainability (see Table 1). Thus, we structured our review by synthesizing the
literature and discussing each identified concept.
Articles Concepts
Market
Analysis Location
Travel
Behavior
Informatio
n Systems
Electric
Carsharing
Sustaina-
bility
[1] Andrew and Douma
2006 X
[2] Awasthi et al. 2007 X
[3] Bardhi and Eckhardt
2012 X
[4] Barth et al. 2003 X
[5] Barth et al. 2004a X
[6] Barth et al. 2004b X X
[7] Barth et al. 2006 X
[8] Bieszczat and
Schwieterman 2012 X
3 Webster, J; Watson, RT (2002): Analyzing the Past to Prepare for the Future: Writing a Literature Review. MIS
Quarterly 26(2):xiii–xxiii.
Multikonferenz Wirtschaftsinformatik 2014 965
[9] Briest and Raupach
2011 X
[10] Burkhardt and
Millard-Ball 2006 X
[11] Catherine et al. 2008 X
[12] Celsor and Millard-
Ball 2007 X X X
[13] Cervero 2003 X
[14] Cervero and Tsai
2004 X
[15] Cervero et al. 2007 X
[16] Chatterjee et al.
2013 X
[17] Chen and Regan
2009 X
[18] Cheu et al. 2006 X
[19] Ciari et al. 2009 X
[20] Ciari et al. 2013 X X
[21] Clavel et al. 2009 X
[22] Clemente et al. 2013 X X
[23] Concas et al. 2013 X X X
[24] Correia and Antunes
2012 X
[25] Costain et al. 2012 X
[26] Douma and Gaug
2009 X
[27] Duncan 2011 X X
[28] Engel-Yan and
Passmore 2013 X
[29] Fan and Xu 2013 X
[30] Fan et al. 2008 X
[31] Febbraro et al. 2012 X
[32] Firnkorn 2012 X
966 Kenan Degirmenci, Michael H. Breitner
[33] Firnkorn and Müller
2011 X X
[34] Firnkorn and Müller
2012 X X
[35] Grasset and
Morency 2010 X
[36] Habib et al. 2012 X
[37] Heling et al. 2009 X X
[38] Hinkeldein et al.
2012 X
[39] Huwer 2004 X
[40] Jorge et al. 2013 X
[41] Karbassi and Barth
2003 X
[42] Kato et al. 2012a X
[43] Kato et al. 2012b X
[44] Kek et al. 2006 X
[45] Kek et al. 2009 X
[46] Khanna and Venters
2013 X X X
[47] Kim and Yoon 2012 X
[48] Lane 2005 X
[49] Le Vine et al. 2013a X
[50] Le Vine et al. 2013b X
[51] Leclerc et al. 2013 X X
[52] Lee et al. 2011 X X
[53] Loose et al. 2006 X
[54] Lorimier and El-
Geneidy 2013 X
[55] Martens et al. 2011 X
[56] Martin and Shaheen
2011 X
[57] Martin et al. 2010 X
Multikonferenz Wirtschaftsinformatik 2014 967
[58] Millard-Ball et al.
2006 X
[59] Morency et al. 2008 X
[60] Morency et al. 2011 X
[61] Morency et al. 2012 X
[62] Mukai and
Watanabe 2005 X
[63] Musso et al. 2012 X
[64] Nobis 2006 X X
[65] Ohta et al. 2013 X X
[66] Rabbitt and Ghosh
2013 X X X
[67] Rickenberg et al.
2013 X X X
[68] Rivasplata et al.
2013 X
[69] Rodier and Shaheen
2004 X
[70] Schaefers 2013 X
[71] Schure et al. 2012 X
[72] Schuster et al. 2005 X
[73] Shaheen and Cohen
2007 X
[74] Shaheen and Cohen
2013 X X
[75] Shaheen and Martin
2010 X
[76] Shaheen and Novick
2005 X
[77] Shaheen and Rodier
2005 X
[78] Shaheen et al. 2003 X
[79] Shaheen et al. 2004 X
[80] Shaheen et al. 2006 X
968 Kenan Degirmenci, Michael H. Breitner
[81] Shaheen et al. 2009 X
[82] Shaheen et al. 2010 X
[83] Shaheen et al. 2013 X X
[84] Sioui et al. 2012 X
[85] Stasko et al. 2012 X
[86] Stillwater et al. 2009 X X
[87] Tal 2009 X
[88] Uesugi et al. 2007 X
[89] Wang et al. 2012 X
[90] Xu and Lim 2007 X
[91] Zheng et al. 2009 X
[92] Zhou 2012 X
[93] Zhou and
Kockelman 2011 X X
Articles per Concept 45 27 18 11 10 7
Table 1: Concept Matrix
2.2 Concepts in the Field of Carsharing Research
The findings of the literature review show that most of the articles address the market situation for
carsharing services (45 articles). Further areas of interest include location considerations (27 articles),
travel behavior (18 articles), information systems (11 articles), electric carsharing (10 articles), and
sustainability (7 articles).
Market Analysis
The first identified concept is the concept of market analysis. It describes various aspects of the
carsharing market such as the market potential of carsharing in an international scope, the impacts of
carsharing, and market trends and future development of carsharing. For example, Kato et al. [42]
analyze the market potential of carsharing in four Japanese cities by conducting a survey focused on
respondents’ awareness and preferences of carsharing services. Rabbitt and Ghosh [66] evaluate the
market potential of carsharing in Ireland using multiple alternative scenarios which examine the
geographic, financial, and environmental factors influencing carsharing adoption. Further studies
assess the market potential of carsharing, for example, in China [75], [89], the United States [1], [11],
[27], [93], the United Kingdom [50], France [21], and Germany [34], [53], as well as in a global
context [73], [74]. As of October 2012, most of the carsharing members are from North America
Multikonferenz Wirtschaftsinformatik 2014 969
(51%) and Europe (39%), followed by Asia (9%), Australia (1%), and South America (>1%).4 Some
articles examine the market potential of carsharing by introducing and evaluating different pilot
carsharing programs like PhillyCarShare [48], CarLink [76], [77], and City CarShare [13], [14], [15].
Location
The concept of location addresses one of the main challenges in carsharing systems: the relocation of
cars. There are three types of carsharing systems: round-trip, one-way, and free-floating. In round-trip
systems, members have to return a car at the station where they picked it up [88]. One-way systems
allow members to pick up a car at one station and return it to a different station [40], while free-
floating systems are operating without any fixed stations [32]. One-way and free-floating carsharing
systems are causing car imbalances across the stations and locations of the cars [6], [24]. The
imbalance of cars attributes to scholars’ efforts in trying to optimize the relocation of cars [22], [31],
[44], [45]. Further studies investigate the optimization of carsharing locations [67] and the role of
parking requirements [28], [58].
Travel Behavior
This concept examines the impact of carsharing on several dimensions of travel behavior including
attitudes of carsharing members, motivations of carsharing usage, and frequency of usage. For
example, Costain et al. [25] present an analysis of a case study with a carsharing company in Toronto,
Canada, to enhance the understanding of members’ behaviors like attitude towards environment,
attitude towards safety, frequency of usage, etc. Ohta et al. [65] conducted a survey in Japan targeting
driver’s-license holders to investigate the acceptance of carsharing. To explore the motivations of
carsharing usage, Schaefers [70] performed 14 personal in-depth interviews with members of a
carsharing provider in the United States and presented the results on the basis of a qualitative means-
end chain analysis. Several other studies examine the motivations of carsharing usage [16], [26] and
the frequency of usage [36], [60], [61], [84].
Information Systems
The concept of information systems in the context of carsharing examines various technologies such
as intelligent transportation systems, geographic information systems, and information infrastructures.
With regard to intelligent transportation systems, for example, Barth et al. [4] investigate different car
access methods, i.e., lockbox, common key, and smart card access, by presenting a trade-off of costs
on one side and security and user convenience on the other side. Further studies investigate wireless
and mobile information systems, suggesting that Wi-Fi is a suitable communication technology for
carsharing in urban areas [17] and providing insights into the usage of mobile devices such as
smartphones for carsharing [23], [52]. In view of geographic information systems, Celsor et al. [12]
undertake a geographic information system-based analysis of a carsharing program in Austin, Texas,
presenting a tool that analyzes the neighborhood characteristics of existing carsharing locations.
Regarding information infrastructures, Khanna and Venters [46] carry out a case study of the
development of an information infrastructure in Berlin. The purpose of this particular information
infrastructure is to develop a sustainable mobility service, which integrates electric carsharing into the
public transport system.
4 Shaheen, SA; Cohen, AP (2012): Innovative Mobility Carsharing Outlook: Carsharing Market Overview,
Analysis, and Trends - Fall 2012. http://tsrc.berkeley.edu/node/701
970 Kenan Degirmenci, Michael H. Breitner
Electric Carsharing
Electric car usage is considered to be capable of reducing carbon dioxide (CO2) emissions [38], which
is why electric carsharing is predicted to increase in the near future [74]. For example, Shaheen and
Cohen [74] conducted 25 interviews with carsharing experts worldwide to examine future trends of
carsharing considering electric cars as one aspect. According to McKinsey’s electric vehicle index that
assesses a nation’s readiness to support an electric vehicle industry based on supply and demand, as of
January 2012, the leading countries in the field of electric mobility are Japan, the United States,
France, Germany, and China.5 Further studies in this concept compare cost and CO2 savings between
electric and conventional cars [66] and investigate the attitude towards electric carsharing [37], [38].
Sustainability
Carsharing is considered to have potential in helping to create a sustainable transportation system [27].
The concept of sustainability is regarded by many carsharing research articles, of which some put a
stronger focus on environmental issues. For example, Firnkorn and Müller [34] conducted a survey
with carsharing members to examine environmental effects caused by the reduction of private car
ownership. Further studies investigate the reduction of greenhouse gas and CO2 emissions through the
implementation of carsharing services [37], [56], [66]. In particular, Martin and Shaheen [56] examine
the greenhouse gas emission impacts of carsharing in North America. They conclude that carsharing
services are used by carless households with some increase in emissions and as an alternative with
emission reductions, resulting in a net effect with an overall reduction in annual emissions.
3 Discussion and Implications for Information Systems Research
With regard to the defined parameters of our literature review, the concept of market analysis reveals
the strongest interest in carsharing research counting approximately half of the reviewed literature.
Since carsharing is a growing trend, it can be assumed that the analysis of the carsharing market all
over the world will continue to attract research interest. In terms of the other identified concepts, it can
be concluded that carsharing research demands an interdisciplinary approach. For example, the
concept of location examines relocation algorithms for carsharing systems derived from operations
research. The investigation of the electric car technology, on the other hand, addresses the engineering
research community, e.g., the analysis of power electronics, batteries, and charging stations for electric
cars, against the background of the integration of electric cars into carsharing fleets. This can be
ascribed to the interdisciplinary nature of transportation research that additionally covers the further
concepts of travel behavior, information systems, and sustainability.
This paper is addressed to the IS research community in the first place. Thus, the implications of the
literature review focus on the field of IS research. Based on the findings of the literature review
regarding the concept of information systems, three IS domains for carsharing research are identified,
i.e., intelligent transportation systems, geographic information systems, and information
infrastructures.
5 Krieger, A; Radtke, P; Wang, L (2012): Recharging China’s electric-vehicle aspirations.
http://www.mckinsey.com/insights/energy_resources_materials/recharging_chinas_electric-vehicle_aspirations
Multikonferenz Wirtschaftsinformatik 2014 971
Intelligent Transportation Systems (ITS)
The reviewed literature suggests that intelligent transportation systems (ITS) are an important domain
for IS research. Considering that carsharing providers deploy wireless and mobile information systems
for ITS, several implications can be derived. Mobile applications are used more and more by
carsharing providers to support various fields such as car search, reservation, and booking. In addition,
there are applications that compute the driving behavior and the related consumption of fuel
(conventional cars) and electricity (electric cars) or that are used as a digital key. Further research
could examine the integration of mobile devices into in-car telematics. Hence, we call for an
investigation of technical capabilities of the interface between mobile devices of carsharing members
and the CAN bus of carsharing vehicles, e.g., using Bluetooth technology. For example, information
about desired energy- and cost-efficient driving behaviors could be communicated to carsharing
members using mobile applications as incentive systems. Thus, we recommend that further research
examines wireless technologies as well as mobile application development and evaluation for
carsharing systems.
Geographic Information Systems (GIS)
Geographic information systems (GIS) are another important domain to consider for IS research. For
example, in order to enhance the understanding of carsharing members’ travel behavior, further
research could focus on the analysis of travel routes, e.g., using GPS technology (see [51]), or using
artificial neural networks (see [18]). The investigation of GPS traces can contribute to a better
understanding of carsharing usage motives. For example, in a study with 8,141 carsharing members in
Montreal, Canada, using 362 cars equipped with GPS, Leclerc et al. [51] found that carsharing trips
are mainly made for non work purposes (shopping, leisure, medical). Referring to artificial neural
networks, the development of trip-forecasting models can help to estimate vehicle flows in a
carsharing system. For example, Cheu et al. [18] developed trip-forecasting models to estimate the
number of vehicles available from a station at a particular time of a day. GPS technology and artificial
neural networks are relevant in GIS, which is why these two fields should be taken into consideration
for further examinations. With regard to GIS for location optimization and decision analyses,
developing decision support systems for round-trip carsharing (see [67]) and programming relocation
algorithms for one-way and free-floating carsharing systems (see [44], [62]) are further promising
research areas as well.
Information Infrastructures (II)
Information infrastructures (II) for carsharing services are another domain that should be addressed.
For example, Khanna and Venters [46] examined II in the context of the development of a sustainable
mobility service by conducting 53 interviews with relevant stakeholders. They conclude that the
importance of II for mobility services will increase. Therefore, it is important to examine the
understanding of II to improve the communication between carsharing members and carsharing
providers. This includes consideration of the approach of business process management, for example,
information, booking, and billing processes as well as data management for carsharing vehicles. In this
context, the back end processes data regarding, e.g., the booking, the billing, and the deployment
planning of carsharing vehicles. On the other hand, the front end as a provider-customer interface
involves, e.g., portal solutions for desktop computers and mobile devices. Thus, we recommend to
analyze and compare carsharing and electric carsharing II by investigating business processes and data
management in terms of, e.g., economic efficiency, usability, and the software quality of the systems.
972 Kenan Degirmenci, Michael H. Breitner
4 Limitations and Conclusion
Our literature review is subject to the following limitations, which present useful opportunities for
further research. First, we limited our search for relevant literature to research databases in the field of
IS and transportation research. Although several interdisciplinary research databases were also
observed, no further discipline-specific databases were considered. We encourage researchers from
other disciplines to extend a literature review on carsharing to further disciplines. Second, we only
considered literature in the English language dealing with commercial carsharing. For example,
regarding peer-to-peer carsharing, worldwide growth is predicted [74]. Hence, literature from other
carsharing-related fields such as peer-to-peer carsharing, carpooling, ridesharing, bikesharing, etc.
could be taken into account. Literature in other languages might be of interest as well. Third, although
we outline all six identified concepts, our implications focus on IS research. This is due to the fact that
we address the IS research community in the first place. Thus, we call for an extension of our
implications to further carsharing-relevant disciplines such as transportation research, engineering
research, operations research, and others.
In this paper, we presented a literature review on the topic of carsharing, which is considered as a new
mobility alternative to private car ownership. In order to address Research Question 1, a conceptual
structuring of the topic was created and six concepts were identified: market analysis, location, travel
behavior, information systems, electric carsharing, and sustainability. With respect to Research
Question 2, implications for information systems research were presented. A holistic view on the
current research in the carsharing area suggests diversified and interdisciplinary possibilities for future
research.
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