> How would you enter this core line? It would be a relation with the ways and stops of the course again. So you would need the core line be a member of the branches and exception relations again.
Example: Core line route=bus ref=100 additional_tag=[empty] branch line route=bus ref=100 additional_tag=different_route those two would meet in point A, from which the branch line sets off/rejoins the core line. So a hypothetical future route-finding algorithm would follow different_route to its end, upon meeting core line it would continue along. Since we already have a collection or a tag stating to which public company/ticket area a line belongs, line ref should be enough to uniquely identify a line (route). -- Best regards, mit freundlichen Grüssen, meilleurs sentiments, Pozdrowienia, Michał Borsuk
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