Vehicular Adhoc Networks is an emerging technology for the communication of vehicles with the support of Intelligent Transportation Systems(ITS) to avoid fatal collisions and crashes on road and to ensure the road safety among the vehicles. The vehicles can be communicated through a wireless medium. Due to the rapid movement of vehicles and change in the topology leads to some message overheads with delays. Hence connectivity among the vehicles disappears and there is a need to identify an optimal path to be identified from source to destination for effective routing. A cluster will be formed to achieve a better link stability between the nodes and able to forward data to other members in case of any emergency situation. The safety message will be disseminated to other nodes in a limited short span of time. This paper gives a review on Vehicular Adhoc Networks(VANET) with its architecture, applications and various strategies which can be applied to form a cluster that yields high performance and evaluated with Quality of Service parameters.

VANET, ITS, Cluster, Routing Protocols, DSR

[1]. Advanced Technologies for Intelligent Transportation Systems- Marco Picone,Stefano Busanelli,Michelle Amoretti,Francesco Zanichelli,Gianluigi Ferrari.
[2]. Saleh Yousefi,Mahmoud Siadat Mousavi and Mahmood Fathy,”Vehicular Ad Hoc Networks(VANETs):Challenges and Perspectives”, IEEE ITS Telecommunication Proceedings, pp.761-766, 2006.
[3]. Poonam Dhamal,Uma Nagaraj and Disha Devotale,”Study of various routing protocols in VANET”,Elixir Adoc Network,Vol.37A, pp.4033- 4039,2011.
[4]. Vehicular Networks-From Theory to Practices-.Stephen Olariu,Michele C.Weigle.
[5]. Samira Harrabi,Ines Ben Jaffar and Khaled Ghedira,”Novel Optimized Routing Scheme for VANETs”,Elsevier ScienceDirect Procedia Computer Science,Vol.98, pp.32-39,2016.
[6]. Jaskaran Preet Singh and Rasmeet S.Bali,”A Hybrid Backbone based Clustering Algorithm for Vehicular Adhoc Networks”, Elsevier ScienceDirect Procedia Computer Science,Vol.46,pp.1005-1013,2015.
[7]. Sourav Chhabra,Rasmeet Singh Bali and Neeraj Kumar,”Dynamic Vehicle Ontology Based Routing for VANETs”,Elsevier ScienceDirect Procedia Computer Science,Vol.57,pp.789-797,2015.
[8]. Ahmad Abuashour and Michel Kadoch,”Performance Improvement of Cluster-Based Routing Protocol in VANET”,IEEEAccess,Vol:5,2017,pp:15354-15368.
[9]. Haigang Gong,Nianbo Liu,Lingfei Yu and Chao Song,”An Efficient Data Dissemination Protocol with Roadside Parked Vehicles’Assistance in Vehicular Networks”,Hindawi Publishing Corporation International Journal of Distributed Sensor Networks,Vol.2013,pp. 1- 12,2013.
[10]. Eduardo Cambruzzi,Jean-Marie Farines,Werner Kraus and Raimundo Macedo,”A Cluster Management System for VANETs”,Springer Science+Business Media,Vol.14,pp.115-126,2016.
[11]. Yen-Wen Lin,Hao-Chun Weng,Tsung-Han Lee and Shan-Yin Hou,”An Adaptive Clustering Scheme for Improving the Scalability in Intelligent Transportation Systems, Hindawi Publishing Corporation International Journal of Distributed Sensor Networks,Vol.2013,pp.1-18,2013.
[12]. Raghavendra Pal,Nishu Gupta,Arun Prakash and Rajeev Tripathi,”Adaptive Mobility and Range Based Clustering Dependent MAC Protcol for Vehicular Ad Hoc Networks”,Springer Science+Business Media,2017.
[13]. A.Malathi and Dr.N.Sreenath,”An Efficient Clustering Algorithm for VANET”,International Journal of Applied Engineering Research,Vol.12,pp.2000-2005,2017.
[14]. Samo Vodopivec,Janez Bester and Andrej Kos,”A Multihoming Clustering Algorithm for Vehicular Ad Hoc Networks”, Hindawi Publishing Corporation International Journal of Distributed Sensor Networks,Vol.2014,pp. 1-8,2014.
[15]. Mazen Alowish,Yasuhiro Takano,Yoshiaki Shiraishi and Masakatu Morii,”Performance Evaluation of Cluster Based Routing Protocol for VANETs”,Journal of Communications,Vol.12,pp.137-144,2017.
[16]. Mengying Ren,Lyes Khoukhi,Houda Labiod,Jun Zhang and Veronique Veque,”A Mobility based Scheme for Dynamic Clustering in Vehicular Ad-hoc Networks(VANETs)”,Vehicular Communications,2016.
[17]. Waqar Farooq,Muazzam Ali Khan and Saad Rehman,”A Novel Real Time Framework for Cluster Based Multicast Communication in Vehicular Ad Hoc Networks”, Hindawi Publishing Corporation International Journal of Distributed Sensor Networks,Vol.2016,pp. 1-18,2016.