Proposed features/Key:gtfs:trip id:sample

gtfs:trip_id:sample
Description
One example "trip_id" of the public transport route variant in the GTFS "trips.txt" file.
Used on these elements
Useful combination
type=route public_transport:version=2 gtfs:release_date=* One of: network:guid=* operator:guid=* gtfs:feed=*
See also
gtfs:shape_id=* gtfs:trip_id=* gtfs:route_id=*
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The key gtfs:trip_id:sample=* is used in public transportation tagging to add one trip_id from the GTFS trips.txt file as example to a PTv2 type=route relation.

Please, use gtfs:shape_id=* if present in trips.txt or shapes.txt as it better fits.

gtfs:trip_id:sample=* is evaluated by PTNA to link from the analysis to the GTFS data if additionally network:guid=*, operator:guid=* or gtfs:feed=* is present (example).
Adding the gtfs:route_id=* does not harm but is not needed as it is derivable from gtfs:trip_id:sample=*

If the route variant represents only one trip with a single service_id gtfs:trip_id=* is an alternative key to use.

Two different name spaces

Currently, two different name spaces are used for GTFS, gtfs_* and gtfs:*:

gtfs_trip_id:sample=*	gtfs:trip_id:sample=*

Visualization

• PTNA represents gtfs:trip_id:sample=* on its pages about GTFS trips and in the network network analysis (overview) under the tags summary.