Smart mobility is becoming an alternative technology of transportation development for today and the future. Today's developers use Intelligent Transportation Systems (ITS) to achieve traffic efficiency by minimizing traffic problems [1]. They care about equipping cars with some safety features as collision detection and lane change assist that depend on sensors like ultrasonic sensors, cameras, and Lidars to allow the vehicles to detect blind spots. The Vehicle-to-Everything (V2X) provides another level of safety by enabling vehicles to exchange information wirelessly, this technology allows vehicles to communicate with each other with coverage up to 300 meters, broadcast and receive Omni-directional messages covering all the space around it (360-degree awareness) even if other objects are blocking line-of-sight; giving it the ability to see around corners. Different communication systems and protocols such as 5G, Ad-Hoc Network, and the Dedicated Short-Range Communications can be used to implement the V2X system. This paper provides a detailed explanation of the used communication system and its fundamentals to improve the ITS, also it is discussing the used simulation platforms and their features.