ed through network func- tion virtualization (NFV) and independently scaled and displaced in convenient locations to flexibly support various services based on changing user demands. For instance, UP functions can be located close to the user, in edge cloud facilities, to reduce service access latency. By abstracting network resources, programmable and software-defined networking Radio Access Network Slicing and Virtualization for 5G Vertical Industries, First Edition. Edited by Lei Zhang, Arman Farhang, Gang Feng, and Oluwakayode Onireti. © 2021 John Wiley & Sons Ltd. Published 2021 by John Wiley & Sons Ltd. 13 5G Network Slicing for V2X Communications: Technologies and Enablers can dynamically steer data traffic for network slices through the setting up of paths that can be automatically reconfigured either to handle traffic engineering (TE) requirements (e.g. load balancing, traffic prioritization) or to react to possible network failures and changing conditions (e.g. mobility). Thanks to these notable features, network slicing has been initially advocated as a key solution for the automotive vertical in [3], followed by flourishing literature in the last cou- ple of years. Notwithstanding, the topic is still in its infancy and deserves further research to properly understand the V2X ecosystem, its evolution in terms of connectivity and com- puting demands as the level of driving automation increases, and the ongoing progress in standardization bodies toward 5G (and beyond) systems. In this context, the contributions of this chapter are as follows: to dissect the V2X applications and their demands, by accounting for the latest taxonomies proposed by involved standardization bodies and stakeholders (Section 13.2); to discuss the main V2X communication technologies, with special focus on the latest progress in the Third Generation Partnership Project (3GPP) for what concerns the radio interfaces as well as architectural enhancements to the cellular network to support V2X connectivity (Section 13.3); to analyze t