[Tagging] PTv1 <> PTv2

marc marc marc_marc_irc at hotmail.com
Sat Jun 23 23:20:31 UTC 2018


Le 22. 06. 18 à 15:37, Martin Koppenhoefer a écrit :
> is there a benefit from it?

try to map a multimodal station bus+train+tram
with one building + one platform with PTv1
the extend for the station is not the same for a bus and a train
for some ppl, the plafform must not be mapped with the same objet
for the rail (a way) and for a bus (a node only)
so for one "passenger waiting area", sometime osm have 2 objets

try to make a blind routing to a bus stop with PTv1
in some country, routing to the highway=bus_stop is fine,
because it's where ppl wait before jumping into the vehicule
in some country, it's wrong, the highway=bus_stop in the stop_position
part of the highway=* for the vehicule, not for the passenger.

try to make network completeness stats in a region by comparing osm
and opendata data, it's impossible. because of the 2 previous points,
it produces fancy results, some stops have several times even tag
on different object. this is what motivated the francophone community
to migrate entirely in PTv2

with PTv2, you may create only one objet with only one tag and
add this objet to the type=route relation
so it's never mandatory to do "more work" with PTv2 than in PTv1.
But the meaning a tag with PTv2 is the same for all transport mode
in all country. that's the goal and the major improvement.


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