A VANET facilitates communicate between vehicles and between vehicles and infrastructure. Vehicular Ad-Hoc Network is a sub type of Mobile Ad-Hoc Network i.e. MANET. Now days, road traffic activities are one of the most important daily routines worldwide. VANET provides you most of information that are required for better safety and driving such as an accurate weather description or early warnings of upcoming dangers. To successfully deploy VANET, security is one of the major challenges such as protection from selfish vehicles that may block or mess traffic, bogus notifications etc. that may harm and losses lives, that must be addressed. Sybil attacks have become a serious threat as they can affect the functionality of VANETs for the benefit of the attacker. The Sybil attack is the case where a single faulty entity, called a malicious node, can create multiple identities known as Sybil nodes or fake nodes. This project detects and prevents the Sybil attack using “Secure Routing for Ad Hoc Network” (SRAN) routing protocol. SRAN is based on AODV protocol. In our proposed work, we have developed SRAN protocol to maintain routing information and route discovery in such manner that will detect as well as prevent Sybil Attack. Each node will have a unique identity and their entry in route table. SRAN Protocol easily detects such route that is not valid anymore for communication. It deletes all the related entries from the routing table for those invalid routes.