Interface VehiclePosition

interface VehiclePosition {
    congestion_level?: CongestionLevel;
    current_status?: VehicleStopStatus;
    current_stop_sequence?: number;
    occupancy_status?: OccupancyStatus;
    position?: Position;
    route_id?: string;
    rt_last_updated: number;
    stop_id?: string;
    timestamp?: number;
    trip_id: string;
    vehicle?: VehicleDescriptor;
}