I am a PhD student at Karlsruhe Institute of Technology. KIT has an RDM Policy containing “Guidelines for Responsible and Sustainable Research Data Management at KIT”:

https://www.rdm.kit.edu/downloads/KIT-RDM-Policy.pdf

It is only one page and covers 5 major points, i.e. definition of RDM, responsibilities of individual researchers and institutes in RDM, the role of the institution KIT in RDM with particular focus on providing adequate infrastructure, and support of free access.

In my opinion, the policy is very general and non-specific and thus not so helpful for concrete application. However, there is a service team at the university, where one can get lots of information, further support, and even attend introductory workshops on this topic.