There are a few restriction relations for "no through route" mapped in Finland. These are a bit ambiguous, because it looks like there are multiple possible routes, all of which are banned. These relations are tagged with type=restriction, but not with any restriction=*. For mkgmap, the issue is that multiple warnings get emitted for the single relation. The attached patch would emit just one warning, for the restriction=* being missing. OK to commit? (Side note: I think that it could be better if there was a "factory" method that created the RestrictionRelation if it is supported. It seems to be a waste of memory to create a RestrictionRelation object that we do not support, for example when there are via ways instead of via nodes.) While working on this, I was wondering why we set rel=null if turn restrictions are being ignored. I think that the relation should be collected, just like any relation that does not have any magic meaning, so that any style rules could process the relation. I did not touch that part of the code. Best regards, Marko