• ADDED : TripDescriptor
• CANCELED : TripDescriptor
• CRUSHED_STANDING_ROOM_ONLY : VehiclePosition
• DEMONSTRATION : Alert
• EMPTY : VehiclePosition
• FEW_SEATS_AVAILABLE : VehiclePosition
• FULL : VehiclePosition
• IN_TRANSIT_TO : VehiclePosition
• INCOMING_AT : VehiclePosition
• MANY_SEATS_AVAILABLE : VehiclePosition
• NO_DATA : TripUpdate::StopTimeUpdate
• NOT_ACCEPTING_PASSENGERS : VehiclePosition
• OTHER_CAUSE : Alert
• SCHEDULED : TripDescriptor , TripUpdate::StopTimeUpdate
• SEVERE_CONGESTION : VehiclePosition
• SIGNIFICANT_DELAYS : Alert
• SKIPPED : TripUpdate::StopTimeUpdate
• STANDING_ROOM_ONLY : VehiclePosition
• STOPPED_AT : VehiclePosition
• STRIKE : Alert
• UNSCHEDULED : TripDescriptor