**7. Conclusions**

This paper addresses the problem of providing low latency and reliable services in vehicular scenarios in a cost-efficient way using 4G and 5G networks. Baseband resources of C-RAN can be co-located with MEC resources to achieve target service requirements. An ILP model for the cost-efficient deployment of baseband and edge cloud resources with reliability against single node failure is proposed. In addition, a heuristic technique is also proposed to reduce computational complexity of the ILP model by proper selection of a subset of edge nodes for the optimization phase. Results show that the hybrid approach provides similar results to the ILP ones while considerably reducing the solving time.

**Author Contributions:** This paragraph specifies the individual contributions of authors to this article. Conceptualization, F.T., B.M.K., E.A., and C.R.; methodology and software, F.T. and B.M.K.; validation, F.T., B.M.K., and E.A.; investigation, E.A.; writing—original draft preparation, F.T., B.M.K., and E.A.; writing—review and editing, F.T., B.M.K., E.A., and C.R.

**Funding:** This research was carried out as a part of PhD activities and was partially funded by the Italian Ministry of Education, University and Research (MIUR).

**Acknowledgments:** The authors would like to thank Sebastiano Cucinotta for his contribution to the definition of the heuristic algorithm during the preparation of his Master project.

**Conflicts of Interest:** The authors declare no conflict of interest.
