[mkgmap-dev] unknown road and cycleway routing

Thu Feb 14 10:10:29 GMT 2013

@Barry,
Where on OSM are highway tagged with highway=unknown?
That is not a valid OSM tag. Those highways should be tagged with highway=road or else unclassified.
bicycle=allowed on a cycleway is also not neccesary, cycleways are by default accesible for cyclists.
Also "allowed" is not a valid tag. Use "yes" or "designated"

@Thorsten
Newer firmwares do work if you use car instead of bicycle for bicycle routing.
By default the carpool lanes are blocked for bicycles in cycling mode. 

In the newer firmwares and Basecamp every road tagged with access=no or motorcar=no is not routable anymore if carpool lanes are avoided (even if bicycle=yes is given, but this tag is ignored by Basecamp as well as the newer firmwares).
So as workaround someone who aims to make cycling maps better should not use "access=no & bicycle=yes" on cycleways.