A Survey Of Various Algorithms In congestion Detection In Vanet

In Today’s era traffic Congestion is of big issue everywhere in the world. So to combat with this problem many sensors and devices where designed and also many algorithms where implemented which can overcome this problem in some amount. The invention relates to the field of traffic jam discovery, and relates to a traffic jam identifying system and method. Vehicles can directly communicate with each other and with infrastructure; an entirely new paradigm for vehicle safety applications can be created. New challenges are created by high vehicle speeds and highly dynamic operating environments. New requirements, necessitated by new safetyof-life applications, include new expectations for high packet delivery rates and low packet latency. Vehicles generate and analyze large amounts of data, although typically this data is self-contained within a single vehicle. With a VANET, the prospect of awareness for the vehicle or driver drastically increases. Here we define such type of communication and data flow between vehicles and infrastructure. The survey report of previous done work is also mentioned. Here in this paper we discuss various implementations which were already done over traffic congestion detection and also we do the comparison of many of these implementation or the algorithms.