ElliottPlack
I would call this path a track and set the access to official or emergency as per the photos period The surface is gravel comma compacted period it is serving the light rail utility substation. It is very muddy comma but I think pedestrians and bicycles are allowed

Attached photo(s):
https://westnordost.de/p/83040.jpg
https://westnordost.de/p/83041.jpg
https://westnordost.de/p/83042.jpg
https://westnordost.de/p/83043.jpg