Looked it up, of course. Definitions are not that clear-cut. Generally, round trip means that you return where you came from, some definitions say along the same route, some say mostly along the same route but not necessarily. I think the less strict definition covers the usage on osm, except for the term "ciircular", best avoid that.
Still, to a Brit "round trip" would suggest two-directional, but the usage of roundtrip on OSM implies one-directional, when talking about public transport. I don't think I can change that, I'm afraid, but if you want to have a go...? 2018-05-25 13:43 GMT+02:00 Andy Mabbett <a...@pigsonthewing.org.uk>: > On 25 May 2018 at 06:48, Peter Elderson <pelder...@gmail.com> wrote: > > > What is the use of the key:roundtrip? > > Explanations just say > >> roundtrip=yes/no(optional) Use roundtrip=no to indicate that a route > goes from > >> A to B. Use roundtrip=yes to indicate that the start and finish of the > route are > >> at the same location (circular route). > > This seems badly named, or badly described. A vehicle that goes from A > to B, then returns along the reverse route to A, is said in British > English to perform a "round trip". > > A vehicle that completes a (approximately) circular route to arrive > back at its starting point is NOT called a "round trip", whether or > not it performs that circuit just once, or multiple times. > > -- > Andy Mabbett > @pigsonthewing > http://pigsonthewing.org.uk > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging > -- Vr gr Peter Elderson
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