On 18/09/2016 15:35, Malcolm Herring wrote:
On 18/09/2016 11:14, Colin Smale wrote:
the values for "oneway" and all the "forward" and "backward" subkey
business are geometric directions related to the order of the nodes in
the OSM way,

This is a dangerous dependency - if the way is reversed by another mapper, the all "oneway" tags become invalid.

Maybe you're unfamilar with it, but this is exactly how oneway traffic on roads (and waterways) has worked since the year dot in OSM. Changing this wouldn't necessarily be "dangerous", but it would be very confusing.



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