# Improvement of 5G Transportation Services with SDN-Based Security Solutions and beyond 5G
## 1 Introduction  
Fifth-generation (5G) capabilities are expected to handle users according to their requests, which could be services or applications. Handling different groups of users with their preferred transportation services requires efficient technology, providing low-cost and minimum energy consumption. Transport service developers have already started to use emerging technologies, allowing users to maximize the transportation facilities. Although electric cars and autonomous vehicles use efficient technologies, 5G and its emerging technologies will improve the users' features and the standard of services. The emerging technologies include 5G based on the Software-Defined Networking (SDN) and 5G based on the Internet of Things (IoT). Here, the SDN concept dominates in the improvement of traffic performance. Users' expectations of 5G and 5G+ are manifold, but the availability of the network is still delayed by heavy data traffic. This expectation depends on the channel capacity and transmission rate, which are some of the 5G requirements. Despite many expectations, users' devices should be able to use online services and applications without any delay. Using an efficient approach for Energy Efficiency (EE), the channel capacityand transmission rate need to be focused on managing the data traffic. In this research, heavy traffic and the search for solutions to enhance the uptime of the online services and applications motivated us to analyze the measurement and management of the traffic. Furthermore, the basic properties of SDN prompted us to design a novel approach for a transportation system because it configures and programs according to the priority of the services. In addition, its switching facilities provide many monitoring opportunities to manage and improve network traffic. Configuring network issues and parameters through the SDN is a programmable approach that simplifies traffic management.  
Comparing the existing and our proposed frameworks, we have added adequate features which allow us to enhance transportation services with emerging technologies such as 5G+ based VCS (Vehicular Communication Services). Additionally, we considered integrating the connected and intelligent approach to security solutions as a new feature. In this integration, we kept the legacy features of the transportation system. For instance, we may add the instance viral monitoring system configured through the connected and intelligent system, including Cooperative Intelligent Transport Systems (C-ITS). This will guarantee the users' safety and security dynamically while users are traveling. High bandwidth and ultra-low-latency capabilities of 5G improve the accessibility and connectivity of VCS [1]. Regarding the C-ITS, 5G and 5G+ capabilities in VCS will be increasing the transportation services with proactive approaches such as security and Vehicle-to-Everything technology [2]. Although 5G capabilities partially support the VCS of the autonomous vehicles, 5G+ capabilities will allow us to improve the features of the VCS and users' requirements [3].  
The rest of the current paper presents a scheme for managing traffic through the following sections: We present a literature review and related works in Section 2. After that, Section 3 provides a generic approach to new and emerging technology, which led us to innovate the novel transportation model/framework. Section 4 introduces the traffic measurements that are relevant to the 5G environment. We discuss the network and traffic management issues in Section 5. Traffic management in 5G and beyond is considered in Section 6. Additionally, it includes the latest challenges to traffic management. In Section 7, we summarize the points as conclusions and consider future work to develop a measurement tool for managing real-time data traffic.