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Analysis of institutional authors

Gonzalez, AbrCorresponding AuthorWilby, MrAuthorDiaz, JjvAuthorPozo, RfAuthorAvila, CsAuthor

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December 20, 2021
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Utilization rate of the fleet: a novel performance metric for a novel shared mobility

Publicated to: TRANSPORTATION. 50 (1): 285-301 - 2023-02-01 50(1), DOI: 10.1007/s11116-021-10244-x

Authors:

Gonzalez, Ana Belen Rodriguez; Wilby, Mark Richard; Diaz, Juan Jose Vinagre; Pozo, Ruben Fernandez; Avila, Carmen Sanchez
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Affiliations

Univ Politecn Madrid, Dept Math Appl Informat & Commun Technol, Avda Complutense 30, Madrid 28040, Spain - Author

Abstract

Car-sharing systems have irrupted in our cities following the shared mobility paradigm. They have evolved the personal mobility market from product-based into service-oriented, which ultimately provides a positive impact on the city's sustainability. Car sharing systems are a complex interactive service, whose dynamics can dramatically affect its operational viability. In order to better asses this viability, we must rely on data to produce novel metrics that characterize both the user behavior and the service performance. Up to date, research has focused on modeling the demand on the basis of the number of rentals that start within a specific time slot. However, this approach seems unable to provide a representative metric of the performance of a car-sharing system. In this paper, we propose a novel metric, the utilization rate of the fleet, which considers the precise number of vehicles within a fleet that are in service every minute of the day. From this basic metric, we derive a key performance indicator (KPI) to reflect the viability of any car-sharing system in economic and sustainability terms. We have applied this new metric and KPI to a dataset with 449 days of car2go data, collected in 10 European cities.
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Keywords

Behavioral researchBenchmarkingCar sharing systemCostFleet operationsFloating carsFree-floating car-sharing serviceFree-floating car-sharing servicesKey performance indicatorsPerformance metricesPersonal mobilityService orientedShared mobilitySustainable developmentUsageUtilization rate of the fleetUtilization ratesVehicle performance

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal TRANSPORTATION due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2023, it was in position 45/182, thus managing to position itself as a Q1 (Primer Cuartil), in the category Engineering, Civil.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 1.82. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 13, 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2026-04-04, the following number of citations:

  • WoS: 11
  • Scopus: 8
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-04:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 45 (PlumX).
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Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Rodríguez Gonzalez, Ana Belén) and Last Author (SANCHEZ AVILA, MARIA DEL CARMEN).

the author responsible for correspondence tasks has been Rodríguez Gonzalez, Ana Belén.

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Awards linked to the item

Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. This work was partially co-funded by the Community of Madrid, the European Social Fund (ESF), and the European Regional Development Fund (ERDF), under Research Grant Co-Mov Y2018/EMT-4818, and by Spanish Ministry of Science, Innovation and Universities under Research Grant MOBISHARING RTI2018-095501-B-I00.
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