Adding occupancy data to buses GTFS-RT feed?

[Anthony Townsend]

Since the 2020partial fleet vehicle equipment upgrades, the SIRI bustime API provides both Occupancy status (as a category):

'Siri':"ServiceDelivery':VehicleMonitoringDelivery':n:'VehicleActivity': "Occupancy"

 and Passenger Count information, when available:

'Siri':"ServiceDelivery':VehicleMonitoringDelivery':n:'VehicleActivity': "MonitoredCall": "Extensions": "Capacities": "EstimatedPassengerCount"

GTFS-RT supports at least Occupancy status (as a category), and the same categories appear to be used in the SIRI API.

"Realtime vehicle crowdedness data is provided by OccupancyStatus, which is a part of the VehiclePositions feed in GTFS-RT."

https://support.google.com/transitpartners/answer/10106342?hl=en

Is is possible to add the Occupancy status information to the GTFS-RT feed? Ideally Passenger count as well. Currently we have to grab both feeds and try to match up based on timestamp and vehicleid.