**5. Conclusions and future work**

The rail sector is one of the most energy-efficient modes of transport, but being responsible for only 9% of passenger transport and 7% of freight transport, it needs to increase its competitiveness and further reduce its carbon footprint. One way of achieving these goals is by the uptake of advanced technologies for boosting digitalisation and green transition of SMEs' industrial processes. This chapter presents the work of surveying the technological needs of the SMEs in the domain and their classification and grouping according to those needs. The results of this survey will be the basis of our future work, for advocating the appropriate technologies to the SME groups, the business areas to focus and identifying the use cases and technological solutions for each SME.
