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kathyskead / googletransitdatafeed

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No warning on missing DST adjustment #228

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
GTFS usually requires an adjusted schedule on daylight savings time
switchover days, due to the change in the definition of arrival and
departure times.  When this is missing, the feed validator ought to give a
warning.

Original issue reported on code.google.com by david.no...@gmail.com on 18 Mar 2010 at 10:53

GoogleCodeExporter commented 8 years ago 
Please comment again on this bug if you think there is something to be fixed 
after 
reading http://groups.google.com/group/gtfs-
changes/browse_thread/thread/4578b8983dae4fab

Original comment by tom.brow...@gmail.com on 22 Mar 2010 at 5:25

GoogleCodeExporter commented 8 years ago 
Yes, I do still think there is something to fix -- it's just not as large a 
problem
as I had thought.

There are still trips between midnight and the changeover times that need 
special
schedules, and agencies don't seem to have special schedules for those trips.

Original comment by david.no...@gmail.com on 22 Mar 2010 at 5:35

GoogleCodeExporter commented 8 years ago 
A stop time can be at one of before, during or after the transition. A trip has 
one 
service_id which may be active on dates with noon before and/or after the 
transition. 
If there is to be a warning it should be for trips which have a stop time 
*after* the 
transition with a service_id active *before* the transition or the opposite. As 
discussed in gtfs-changes, a naive gtfs publisher is likely to not need special 
trips 
even when crossing the transition so this warning could push publishers to 
really 
understand this complex topic only to discover no action is needed. I don't 
know if 
that is good or bad.

Also the validator shouldn't assume that the transition happens in the early 
morning, 
sometimes it happens at 11pm or midnight.

Original comment by tom.brow...@gmail.com on 22 Mar 2010 at 6:26

GoogleCodeExporter commented 8 years ago 
Moved to https://github.com/google/transitfeed/issues/228

Original comment by bdfer...@google.com on 8 Oct 2014 at 12:17