[Tagging] Forward/backward routes

Peter Elderson pelderson at gmail.com
Tue Aug 20 00:28:26 UTC 2019

> Op 20 aug. 2019 om 01:44 heeft Paul Johnson <baloo at ursamundi.org> het volgende geschreven:
>> On Mon, Aug 19, 2019 at 6:23 PM Peter Elderson <pelderson at gmail.com> wrote:
>> Well, the simple version I got from bicycle route mappers is: members in the main direction have no roles. The fact that there is a role tells you it’s a way for the opposite direction, and then forward tells you the opposite travel direction goes against the mapped direction of that member way, and the backward role tells you the opposite travel direction goes with the mapped direction of the way.
> If the way is traversable as part of the route in both directions, then this is correct.  If the route only applies to one direction, then you do need to specify forward or backward.

Then, the roles forward and backward may both apply to ways in both travel directions? And then there is traffic direction, which is also not the same as mapped direction, and may be different for different transport modes... 

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