Reporter: wmaurer
[Submitted to the original trac issue database at 2.56pm, Sunday, 3rd October 2010]

I have been adding cycle routes around where I live in central Switzerland. I understand that OpenCycleMap is UK focused, but I hope to get a resolution to the consistent rendering problems that I have noticed.

Where I live, many NCN, RCN and LCNs overlap. At zoom levels of 13 and more, OpenCycleMap renders nicely; when, for example, an NCN and a RCN share the same route, OpenCycleMap creates a tint between the red and light blue, for example:
http://www.openstreetmap.org/?lat=46.7735&lon=7.6621&zoom=13&layers=C

At zoom level of 12 or less, OpenCycleMap doesn't create a tint, but instead, it picks one of the routes and uses that as the principal colour. I'm not quite sure if there's a priority, but I assume it would be NCN before RCN before LCN. However, at different zoom levels, the rendering is inconsistent. For example, at zoom level 12, NCN 2MTB is not rendered in preference of RCN 99:
http://www.openstreetmap.org/?lat=46.7588&lon=7.6908&zoom=12&layers=C
However at zoom level 11, NCN 2MTB is rendered in preference to RCN 99:
http://www.openstreetmap.org/?lat=46.759&lon=7.691&zoom=11&layers=C

My suggestion is to either tint the colours as with zoom level 13 and more, or to ensure that the rendering is consistent between zoom levels less than 11.