[Tagging] Can highway=cycleway be limited to MTB?

[Dave F]

> No to motorway, a motorway is a divided, limited access highway, 
> distinct from other types of highway.   Trunk is ambiguous, it 
> wouldn't bother me if it was removed.
How to miss the point
Note the "etc".

>
> The wiki for cycleway, the 1st line:
> "The highway 
> <https://wiki.openstreetmap.org/wiki/Key:highway>=cycleway tag 
> indicates a separate way for the use of cyclists. "

Separate from the road, not

> All of the example pictures show a paved path or track.

Then tag them as surface=asphalt rtc, Tag mtb routes a surface=dirt etc
A couple of pictures never encompasses all scenarios.

DaveF