A wide variety of different kinds of networks are being developed and implemented in a variety of situations thanks to recent advancements in hardware, software, and communication technologies. The Vehicular Ad-Hoc Network (VANET) is one such network that has drawn a lot of attention in recent years. Because VANET has the potential to significantly increase traffic efficiency, vehicle and road safety, passenger comfort, and driver convenience, it has been a focus of active study, standardization, and development. In this technical review, significant VANETs Protocols which were based on the topologies are compared along with their benefits and drawbacks. In this paper, a literature review is shown on different routing protocols in vehicular ad hoc networks with their limitations. Apart from that discuss the benefits as well as drawbacks related to topologies-based routing protocols.