Abstract: Vehicular Ad-Hoc Networks (VANETs) are receiving a lot of attention due to the wide variety of services they can provide. Their applications range from safety, crash avoidance Internet access and multi media. VANETs are the most important component of Intelligent Transportation System (ITS). One of the main goals of the ITS is to improve safety on the roads, and reduce traffic congestion, waiting time, and fuel consumption. A lot of work and research around the globe is being conducted to define the standards for vehicular communication. Technical challenges in vehicular ad hoc network development include network discovery, conjunction control, routing, collaborative signal, information processing, querying and security. Vehicular traffic is the primary problem of many developing countries. Vehicular traffic occurs when the volume of traffic flow demand for space greater than the available road capacity. One of the main issues in this type of system is to control the vehicular traffic signal at the intersection of the roads. But in the traditional signalling of road scenarios this will not fully help for the control of the traffic and will be unable to adjust the timing pattern. In this paper we propose dynamic signalling which is based on the density of the vehicles in the road scenario. Suppose if the density increases in the vehicle then an alternative path has to be selected. So this work prevents the vehicles traffic at the inter section and also reduces the time of the passengers.

Keywords: Inter-Vehicle Communications (IVC), Roadside-to-Vehicle Communications (RVC), Vehicular Networks. Vehicular Ad Hoc Networks (VANETs), Mobile Ad Hoc Networks (MANET), Wireless Access for Vehicular Environment (WAVE), On-Board Units (OBU), Road Side Units (RSU).