We're trying to get feedback, from producers in particular (AVL/APC vendors included), on the best way to share real-time occupancy data, especially given the relevance of this to current transit conditions around the world.
A quick recap - there are currently two experimental ways to represent occupancy data in GTFS-Realtime data:
• OccupancyStatus (6 yrs old) – an enumeration of values like “MANY_SEATS_AVAILABLE, FEW_SEATS_AVAILABLE, STANDING_ROOM_ONLY”, etc.
• occupancy_percentage (brand new) – A numeric value between 0 and 100
There is one thread on GitHub that is trying to identify precise use cases for each field – Aaron Antrim just wrote a summary of the discussion so far here:
There is another proposal to change OccupancyStatus enumeration values – to potentially reduce the number of them and align with the values used in the SIRI spec:
If you're a producer of occupancy data that can (or could be) shared in real-time, please comment on both threads with your thoughts!
Sean J. Barbeau, Ph.D.
Principal Mobile Software Architect for R&D
University of South Florida