Resumen
Vehicular Ad-hoc Network (VANET), a subset of Mobile Ad-hoc networks (MANETs), is one of the emerging technologies of Road Transportation system. In recent years, the aspect of Vehicular Ad-hoc Network (VANET) is becoming an interesting research area as it is characterized as self-configured wireless network. The design of routing protocols in VANETs is play a vital role and necessary issue for the Vehicle to Vehicle Communication Technology. The existing routing protocols of MANETs are suitable for VANET with changes in configuration of protocol. The routing protocols fall into two major categories of topology-based and position-based routing. We discussed different kinds of existing routing protocols with two major categories, the advantages and limitations of each which will helps to enhance the existing routing protocols for the suitability of Vehicular Ad-hoc Networks. We implemented three existing routing protocols and the testing results stated that the performance of each in aspects of various parameters such as Packet Delivery Ratio, Throughput and End-End Delay using Network Simulator.