The oneway attribute, unaffixed or not, reflects the direction a way may _legally_ be used in. You're free to ignore it, but may have to deal with consequences by law enforcement personnel.
Because in OSM each way has an inherent direction given by the order of its node list (let it be D), it is a ternary attribute allowing three values. For a rather long time, it meant/means that - oneway=yes precepts usage along D - oneway=-1 precepts usage opposite to D - oneway=no does not precept a direction Its namespace suffixed variants should by all have equivalent interpretation. By depending solely on D the interpretation is indpendent of the left/right-handedness of a traffic system. However, based on empirical data research people are about to dilute the value of 'yes' to maybe mean -1 as well, depending on ancillary conditions. I strongly oppose such dilution for the same reason I oppose using 'opposite_lane' as a value for cycleway:right= or cycleway:left= Regards, cmuelle8 > On 15/03/2019 08:58, Charles MILLET wrote: > > Isn't the tag or name space "oneway" made to define that a lane is > oneway or not ? In this case using cycleway:left means by default it is > oneway. So the name space ":oneway" is used to describe the direction. > > Correct me if I am wrong. _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
