delay in stop_time_update GTFS-RT trip updates not recognized by OBA?

[Wojciech Kulesza]

Hey.

We’re having troubles with oba support for delay rather than time values for gtfs rt trip updates. What we normally produce in transit clock, has time values for stop_time_update, but we’re trying to consume delay values and I’m being told it’s not supported or causes problems to match gtfs to gtfs rt?

We have found one method that does not recognize "delay" value and therefore throws away such trips and marks them as inactive. Please see isTripActive() in the class GtfsRealtimeTripLibrary in row 605: https://github.com/OneBusAway/onebusaway-application-modules/blob/0beb2c1050386c5e[…]ration/impl/realtime/gtfs_realtime/GtfsRealtimeTripLibrary.java

Can anyone provide any insight on this, confirm/deny/suggest possible options?

Regards

[Sean Barbeau]

When I was involved with the Tampa deployment we used delay there. I don't know if thats still the case.

Sean

[Wojciech Kulesza]

Thanks Sean.

The link pasted in incorrectly.

Please see: https://github.com/OneBusAway/onebusaway-application-modules/blob/0beb2c1050386c5e0862e87cbff650574dd36eab/onebusaway-transit-data-federation/src/main/java/org/onebusaway/transit_data_federation/impl/realtime/gtfs_realtime/GtfsRealtimeTripLibrary.java#L605

It seems that this code makes those trips inactive and thus, app doesn't show any real-time info.

[Sean Barbeau]

IIRC there can be arrival and departure delays, so from a quick glance I don't immediately see why that code would disable a delay-only update (but I dont recall details of the code).

Maybe make sure that all your GTFS stop_times.txt records have both arrival and departure times set? IIRC thats what Tampas data looked like. Then OBA can apply the delay to the scheduled time to compute the realtime time.

Sean

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