Thanks Wanmil, it's an easy fix if you know it ;-) I havent notice the change: - the oneway=* tag is simplified after style processing. If it is "true" or "1" it is changed to "yes", if it is "-1" or "reverse", the points of the way are reversed and the tag is changed to "yes". If finally the tag is not "oneway=yes" the tag is removed from the way. This is also done for (overlaying) lines, and it improves the RoadMerger as it allows a few more merges. - simplified "oneway=*" handling in RoadMerger I assume this also means that I should render a) cycleway=opposite_lane & oneway=-1 the same as b) cycleway=opposite_lane & oneway=yes Now I have two other line types for these situations (bike lane on either left or right side of the road)