  The recent and upcoming releases of the 3rd Generation Partnership Project's
5G New Radio specifications include features that are motivated by providing
connectivity services to a broad set of verticals, including the automotive,
rail, and air transport industries. Currently, several radio access network
features are being further enhanced or newly introduced in NR to improve 5G's
capability to provide fast, reliable, and non-limiting connectivity for
transport applications. In this article, we review the most important
characteristics and requirements of a wide range of services that are driven by
the desire to help the transport sector to become more sustainable,
economically viable, safe, and secure. These requirements will be supported by
the evolving and entirely new features of 5G NR systems, including accurate
positioning, reference signal design to enable multi-transmission and reception
points, service-specific scheduling configuration, and service quality
prediction.
