The correct way of dealing with meta data that is essential for a particular purpose is to define appropriate meta data tags and have the renderers for that purpose render it appropriately.

None of the renderers on the www.openstreetmap.org page are intended for end user use by private motorists. The default is intended for mappers. Cycles is intended for cyclists. Transport is intended for public transport users and, although I’m not sure of the exact target audience of Humanitarian, and I don’t think it is your use case either.

Putting meta data in a name to force it to render, results in it rendering on maps that are not intended to be used for the purpose for which it was added, and creates a disincentive for maps and routers that were so intended to handle that information correctly, creating a vicious circle that reinforces the mis-use of the name. (Mapper: I use the name because the special tags are not rendered. Renderer developer: there is no need to spend time on implementing the tags as no one uses them.)