'Tis the season! Christmas buses are now available in the data feeds following the update to GTFS files overnight.
You can identify Christmas buses by the ‘special_vehicle_attribute: 4’ value in the Vehicle Positions API - Public Transport - Realtime Vehicle Positions | TfNSW Open Data Hub and Developer Portal
For reference please read the Buses technical documentation - https://opendata.transport.nsw.gov.au/sites/default/files/TfNSW_Realtime_Bus_Technical_Doc_v2.2.pdf
Thanks,
Alex