## 8 Future Directions
Indeed, we can list a couple of SDN-based VANET frameworks' examination as discussed above: the situation of the SDN controller, correspondence controls VANETs or mobile network based, nearby information on encompassing hubs by means of reference point or geo-communicate messages [39; 42], arrange test system devices, for example, Mininet-WiFi, hint of overhead communication among the vehicles, and the SDN-based controllers. Far reaching reviews [41; 43] do not have similar reports on the framework examination of the existing SDN-based VANETs to call attention to SDN-based VANET parts, designs, and calculations explored to handle SDN-based VANET downsides. [PERSON] et al. [23] explored SDN-based VANET designs to distinguish their advantages and difficulties against the VANETs with respect to correspondence [58] and security [22]. Inside the current SDN-based VANETarrangements, innovation for the SDN-based controllers and execution device for OpenFlow rules convention have been developed, yet a far reaching study on SDN put together VANET designs will give the necessary bits of knowledge on the parts required for further improvements. Since the framework examination of SDN-based VANET frameworks give key empowering innovations to exploring SDN-based VANET problems and issues, the arrangement models developed in the execution based framework investigation in SDN-based VANETs represents potential research openings towards proficient SDN-based VANETs that could permit an enormous number of new VANET applications. As affirmed by the huge research output which we talked about in our paper, the academia and the industry world are moving forward to build the structure and setup of the new SDN-based VANET designs. The quick push toward this path is after the effect of rising and creative applications (5G, IoV, ITS) of VANETs which have stringent prerequisites about power, adaptability, inertness (i.e., time imperatives for basic continuous basic leadership), security, and protection. Scientists' imagine the effective arrangement of these applications by utilizing the SDN-based VANETs combined with other new innovations, for example, versatile edge/haze registering, SDN-based VANETs, and NFV. Although different designs are developed in the literature to enhance the correspondence of unwavering quality and security in the VANETs, thorough examination to assess the adequacy of the structures remains a popular issue. Specifically, the novel privacy and security susceptibilities that emerge because of the joining of the novel innovations, (e.g., NFV, SDN, and cloud/fog and the edge processing) by the current VANETs ought to be painstakingly contemplated. For example, scientists ought not just to provide the advantages of utilizing SDNs to enhance the VANETs design, however, the novel problems (e.g., administration inertness, versatility, and verifying the SDN-based controller) which are inalienable to the SDN and currently disappoint the presentation of the SDN-based VANETs, ought to likewise be researched and talked about. In addition, it is essential to take a gander at how unique, continuous change, fast on-request development (adaptability), and joining of administration setting will assume key jobs in empowering fruitful arrangement and maintaining a strategic distance from execution permeability holes in SDN-based VANETs. In the ongoing future, VANETs engineering will continually be developing to fulfil the quickly developing prerequisites of its new applications. Along these lines, we currently present hardly any exploration bearings that could be abused toward this path. SDN and car frameworks are key empowering influences for 5G frameworks. This will obstruct the applications described by the individual or multi-occupancy. The deviating 5G and V2X administrations range from a solitary mechanized vehicle in smart cities, to upgraded constant route frameworks ready. In conventional systems, various administrations can be bolstered in similar engineering and worked without versatility as a main priority.