48370 20200221144341.0 doi 10.1155/2016/8320756 sideral 94100 ART-2016-94100 eng (orcid)0000-0001-7657-0075 Sanguesa, J.A. On the Study of Vehicle Density in Intelligent Transportation Systems 2016 Access copy available to the general public Unrestricted Vehicular ad hoc networks (VANETs) are wireless communication networks which support cooperative driving among vehicles on the road. The specific characteristics of VANETs favor the development of attractive and challenging services and applications which rely on message exchanging among vehicles. These communication capabilities depend directly on the existence of nearby vehicles able to exchange information. Therefore, higher vehicle densities favor the communication among vehicles. However, vehicular communications are also strongly affected by the topology of the map (i.e., wireless signal could be attenuated due to the distance between the sender and receiver, and obstacles usually block signal transmission). In this paper, we study the influence of the roadmap topology and the number of vehicles when accounting for the vehicular communications capabilities, especially in urban scenarios. Additionally, we consider the use of two parameters: the SJ Ratio (SJR) and the Total Distance (TD), as the topology-related factors that better correlate with communications performance. Finally, we propose the use of a new density metric based on the number of vehicles, the complexity of the roadmap, and its maximum capacity. Hence, researchers will be able to accurately characterize the different urban scenarios and better validate their proposals related to cooperative Intelligent Transportation Systems based on vehicular communications. info:eu-repo/grantAgreement/ES/MINECO/TEC2014-52690-R info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 0.849 2016 TELECOMMUNICATIONS 79 / 89 = 0.888 2016 Q4 T3 COMPUTER SCIENCE, INFORMATION SYSTEMS 121 / 146 = 0.829 2016 Q4 T3 0.207 2016 Computer Networks and Communications 2016 Q3 Computer Science Applications 2016 Q4 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion (orcid)0000-0001-5664-6589 Naranjo, F. Universidad de Zaragoza Torres-Sanz, V. (orcid)0000-0003-1044-7335 Fogue, M. Universidad de Zaragoza (orcid)0000-0002-1750-7225 Garrido, P. Universidad de Zaragoza (orcid)0000-0001-6945-7330 Martinez, F.J. Universidad de Zaragoza 5007 035 Universidad de Zaragoza Dpto. Informát.Ingenie.Sistms. Área Arquit.Tecnología Comput. 5007 570 Universidad de Zaragoza Dpto. Informát.Ingenie.Sistms. Área Lenguajes y Sistemas Inf. 2016 (2016), 8320756[13 p] Mobile Information Systems Mobile Information Systems 1574-017X 3069012 http://zaguan.unizar.es/record/48370/files/texto_completo.pdf Versión publicada 95557 http://zaguan.unizar.es/record/48370/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:48370 articulos driver 2020-02-21-13:50:15 ARTICLE