  The 5G mobile network brings several new features that can be applied to
existing and new applications. High reliability, low latency, and high data
rate are some of the features which fulfill the requirements of vehicular
networks. Vehicular networks aim to provide safety for road users and several
additional advantages such as enhanced traffic efficiency and in-vehicle
infotainment services. This paper summarizes the most important aspects of
NR-V2X, which is standardized by 3GPP, focusing on sidelink communication. The
main part of this work belongs to the 3GPP Rel-16, which is the first 3GPP
release for NR-V2X, and the work/study items of the future Rel-17
