Today bicycle trails are all marked as blue (in the opencyclemap)
I would like to suggest the following method in order to give the riders info on the type of trail:
- color purple or magenta for paved trails or trails that do not require MTB skill
- color green for trails that require basic MTB skill
- color blue for trails that require medium MTB skill
- color Black for trails that require advanced MTB skill
(This mathod is used on bicycle maps in Israel)
This method will give a clear picture as for the nature of each trail (or each part of a certain trail) and will enhance the use of opencyclemap