VANET(Vehicular adhoc Network) is emerging technology in which routing is important process from perspective of analysis and design of network applications of its kind. In this paper , existing distance vector routing protocols viz. DSDV , AODV and AOMDV are analyzed not as done earlier over grid topology, but detailed of road layout is used for analysis . As we know, Road topologies such as Highway, Intersection and Bridge are common in city or urban areas. Here, three routing protocols are run for all the road topologies to obtain more accurate evaluation. Apart from this, new routing method for opposite direction movement of vehicles is also analyzed using network simulator NS 2. 34. Different performance metrics such as PDR , end to end delay and routing overhead are used to obtain the result for all three routing protocol. Finally this analytical study helps to compare and decide better of routing strategy for city scenario with all possible road topologies.

1. Hannes hartenssen , Kenneth laborteux "VANET Vehicular Applications and internetworking technologies" Book by A John Wiley and Sons Ltd, Publication. Pp1-112.
2. Francesco Giudici, Dario Maggiorini and Gian Paolo Rossi, "Performance evaluation of distance vector-based Routing protocols for public transportation Vehicular networks", Department of Information and Communication Science, University of Milano.
3. D. C. Gazis, The origins of tra?c theory, OperationsRes, 2002, pp. 69–77.
4. Nur Diana Mohd. and Nuri, Halabi Hasbullah "Strategy for Efficient Routing in V ANET", Computer and Information Sciences Department Universiti Teknologi PETRONAS Tronoh Perak, Malaysia.
5. Geraldes, Rute Viegas and José Manuel "Real Time changes of Road network Topology as an Approach to Mitigate The Effects of Incidents In Urban Congestion", 12th WCTR, July 11-15, 2010 – Lisbon, Portugal.
6. Prof D. D. Chaudhar and,Pranav Pawar, Dr. L. M. Waghmare"Comparison and Performance Evaluation of Wireless Sensor Networkwith different Routing Protocols, International Conference on Information and Electronics Engineering IPCSIT vol. 6 (2011) © (2011) IACSIT Press, Singapore, 2011
7. Josiane Nzouonta and Neeraj Rajgure, Guiling (Grace) Wang, Member, IEEE, and Cristian Borcea, Member, IEEE "VANET Routing on City Roads Using Real-Time Vehicular Traffic Information" IEEE transactions on vehicular technology, vol. 58, no. 7, september 2009.
8. Er. Deepinder Singh Wadhwa and Er. Tripatjot Singh Panag "Performance Comparison of Single and Multipath Routing Protocols in Adhoc Networks",ISSN:2229-6093 Deepinder Singh Wadhwa et al, Int. J. Comp. Tech. Appl. , Vol 2 (5), 1486-1496.
9. Prof Bilal Mustafa and Umar Waqas Raja, "Issues of Routing in VANET", Computer science thesis ,no MCS-2010-20, School of Computing, Blekinge Institute of Technology Box 520 SE – 372 25 Ronneby, Sweden.
10. Amit R. Welekar and Dr. S. S. Dorle , Efficient use of Bidirectional Communication to Increase Communication Capabilities in Distributed VANET , ISSN:2229-6093, Amit R Welekar et al ,Int. J. Computer Technology & Applications,Vol 3 (3), 1034-1039.
11. Yu-Chee Tseng and Sze-Yao Ni "The Broadcast Storm Problem in a Mobile Ad Hoc Network", Wireless Networks, 153–167, 2002,Kluwer Academic Publishers. Manufactured in The Netherlands.
12. Muhammad Alaz, Muhammad Sher Syed Afaq Husain,"Integrated Mobility Model (IMM) for VANETs Simulation and Its Impact", International Conference on Emerging Technologies,2009.
13. Ahmed h. Zahra and ben liang, senior member of IEEE,"Mobility modeling and performance evaluationOf heterogeneous wireless networks" and IEEE transactions on mobile computing, vol. 7, no. 8, august 2008.
14. Nidhi and D. K. Lobiyal,"Performance evaluation of realistic Vanet using traffic light scenario" ,International Journal of Wireless and Mobile Networks (IJWMN) Vol. 4, No. 1, February 2012.
15. Bhushan Vidhale and S. S. Dorle,"Performance analysis of routing protocols in Realistic environment for vehicular ad hoc Networks", 21st international conference on systems engineering , 2011.

Road Topology Routing Strategy