Wireless technology has been gaining rapid popularity in the current years. Adoption of standard depends on the ease of use and level of security it provide. The era of Vehicular Ad-hoc NETwork (VANET) are receiving increasing attention from academia and deployment effort from industry. In a VANETs, vehicles will depend on the integrity of data for deciding when to alerts to drivers. The VANETs provide an intelligent communication among vehicles and also between vehicle and roadside infrastructures. The communication in VANETs is done between vehicle to vehicle, vehicles to roadside unit through wireless communication.