Abstract: Vehicular Ad Hoc Network (VANET) is a type of Mobile Ad-Hoc Network or MANET which gives correspondence among vehicles and among vehicles and street side base stations. A vehicle in VANET is viewed as a savvy portable hub fit for speaking with its neighbors and different vehicles in the system. VANET is unique in relation to MANET because of high portability of hubs and the huge size of systems. Secure transmission and protection of data are the important constraint for structuring a VANET. Since there are many proposed work for improving protections in VANET, however secure transmission despite everything stays a sensitive research field. The primary destination of our work is to enhance the security concerns in vehicular networks. The fundamental endeavors were centered on the potential applications, potential assaults, secure prerequisites and the writing perusal. The long haul objective of this venture is to concoct an altogether new arrangement that can be executed in structuring a vehicular network.